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Protective Device Product List and Ranking from 21 Manufacturers, Suppliers and Companies | IPROS GMS

Last Updated： Aggregation Period:Jan 14, 2026～Feb 10, 2026
This ranking is based on the number of page views on our site.

Protective Device Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Jan 14, 2026～Feb 10, 2026
This ranking is based on the number of page views on our site.

  1. HRD CO.,LTD. Osaka Head Office , Osaka Branch , Nagoya Branch , Toyota Branch , Tokyo Branch , Hiroshima Office , Himeji Office , Kyoto Office , Toyama Office , Toyohashi Office , Kyusyu Office , Shizuoka Office , Sendai Office , HRD-THAILAND Co.,LTD. Osaka//Trading company/Wholesale
  2. 山田電機製造 Aichi//others
  3. アローズエンジニアリング Chiba//Testing, Analysis and Measurement
  4. 4 伊藤精密製作所 MSTEC事業部 Gifu//others
  5. 5 イートン・エレクトリック・ジャパン Osaka//Industrial Electrical Equipment
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Protective Device Product ranking

Last Updated： Aggregation Period:Jan 14, 2026～Feb 10, 2026
This ranking is based on the number of page views on our site.

  1. WOT type trap <Alternative to T type trap> Vacuum pump protection device HRD CO.,LTD. Osaka Head Office , Osaka Branch , Nagoya Branch , Toyota Branch , Tokyo Branch , Hiroshima Office , Himeji Office , Kyoto Office , Toyama Office , Toyohashi Office , Kyusyu Office , Shizuoka Office , Sendai Office , HRD-THAILAND Co.,LTD.
  2. Overcurrent relay (motor overcurrent protection device) 山田電機製造
  3. High-efficiency cold trap vacuum pump protection device 'HC-J Collector' HRD CO.,LTD. Osaka Head Office , Osaka Branch , Nagoya Branch , Toyota Branch , Tokyo Branch , Hiroshima Office , Himeji Office , Kyoto Office , Toyama Office , Toyohashi Office , Kyusyu Office , Shizuoka Office , Sendai Office , HRD-THAILAND Co.,LTD.
  4. 【Significant Increase in Energy Saving Effect!】Instant Voltage Drop Protection Device "VSP" アローズエンジニアリング
  5. 5 Are you troubled by dents and scratches on your products? *Case studies are now available. 伊藤精密製作所 MSTEC事業部

Protective Device Product List

1～30 item / All 52 items

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Free demo and testing of the device "Dacon Anshin" that protects processed goods from scratches is currently underway.

Free demo and testing of the device "Dacon Anshin" that protects processed goods from scratches is currently underway.

Prevent dents and scratches on processed products! A device that allows for safe long-duration unmanned operation. Free comprehensive catalog featuring various series available!

"Dakon Anshin" is a device that prevents dents and scratches caused by contact between products when they are discharged from machines such as NC automatic lathes, presses, forging, rolling, and polishing. Traditionally, it required human supervision for tasks like inspection and sorting for quality control, but by using "Dakon Anshin," you can prevent dents and scratches while also achieving labor savings and cost reduction. ■□■ We are currently conducting a "free demo/test" to confirm the high quality of our products! ■□■ 【Features】 - Use with peace of mind for "dents" and versatile applications - Increased productivity through short-term and long-term automation - Easy operation! Equipped with casters for easy movement *If you wish to request a demo/test, please specify "Demo Request" in your inquiry. *The comprehensive catalog for "Dakon Anshin" can be viewed as a PDF from the download section.

  • Other processing machines
  • Protective Device

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D-UFB Series

D-UFB Series

Protect computers and control systems from surges up to 5kA of large surge current!

The "D-UFB Series" can protect computers and control systems from surges up to 5kA by simply connecting to the data lines with a D-SUB connector. Input/output is connected with a D-SUB connector, and grounding is achieved by connecting to the grounding screw of the housing. The housing is made of metal and has excellent shielding properties. 【Specifications】 ■ Model: D-UFB-V24 (RS232), D-UFB-V11 (RS422), D-UFB-485 (RS485) ■ Rated Voltage: DC15V / DC12V ■ Surge Current Capacity: 5kA (8/20us) ■ Dimensions: Width 85 × Depth 54.5 × Height 23mm *For more details, please feel free to contact us.

  • Other Connectors
  • connector
  • Protective Device

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Surge protector "BSPMA Series"

Surge protector "BSPMA Series"

Compliant with NFPA79 and UL508A standards. Protects the equipment from lightning surges. Complies with RoHS.

The "BSPMA series" is a product that can be used as a surge protector for industrial control devices aimed at the North American market, in accordance with the NFPA79 and UL508A standards. The SCCR value is 200kA, and it complies with the safety requirements of UL1449. The number of poles ranges from 1 to 4, allowing for selection based on the power system. It complies with the RoHS directive. 【Features】 ■ UL Type 1 SPD ■ Complies with UL 1449 4th Edition ■ DIN rail (35mm width) mounting structure ■ Equipped with alarm contacts for external signal output *For more details, please refer to the documentation. Feel free to contact us with any inquiries.

  • others
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  • Protective Device

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AC, DC surge protector NSP series

AC, DC surge protector NSP series

The NSP series, which complies with UL standards and ensures safety, features a compact design that makes effective use of space.

1. High protection performance: The NSP series boasts high protection performance that safeguards equipment from lightning surges and overvoltage. It can handle discharge currents of up to 160kA, providing reliable protection. 2. Compact design: The NSP series is designed in a compact size, which saves wiring space and makes installation easier. 3. Diverse lineup: The NSP series offers a variety of options, ranging from AC power to DC power. Additionally, multiple rated currents and terminal shapes are available, allowing for selection based on specific applications. 4. Longevity: The NSP series is made using high-quality materials and undergoes strict manufacturing processes. As a result, it has a long lifespan and requires minimal maintenance. 5. Safety: The NSP series complies with UL standards, ensuring safety. Furthermore, the terminal area is equipped with protective covers to prevent accidental contact.

  • Other electronic parts
  • others
  • Protective Device

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Solar power generation model 'MZSR-600PV/MZSR-1000PV'

Solar power generation model 'MZSR-600PV/MZSR-1000PV'

Power supply SPD compatible with solar power generation systems up to DC1000V.

The "MZSR-600PV/MZSR-1000PV" is a surge protective device (SPD) for solar power generation systems that can handle a maximum discharge current of 40kA (8/20μs for induced lightning). It is designed to protect PV systems at DC600V/DC1000V, and is available in two models, PVI and PVY, depending on the presence of a grounding phase. With a built-in deterioration indicator type DC fuse, it safely disconnects even in the event of a PV system accident. 【Features】 ■ Supports a maximum discharge current of 40kA (8/20μs for induced lightning) ■ Compatible with DC600V/DC1000V PV system protection ■ Plug-in type ■ Deterioration failure indication function *For more details, please refer to the catalog. Feel free to contact us with any inquiries.

  • Other environmental equipment
  • Protective Device

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Class I and Class II compatible power supply SPD 'MZS/MZCR'

Class I and Class II compatible power supply SPD 'MZS/MZCR'

Class I and II compatible! SPD that protects the power supply of electrical equipment from direct lightning and induced lightning surges.

The "MZS/MZCR" is an SPD (surge protective device) that protects the power supply section of electrical equipment from direct lightning strikes and induced lightning surges. It is compatible with Class I (10/350μs) and can handle direct lightning strikes of up to 75kA, as well as overvoltage occurring between N-PE during ground fault incidents (MZS-NPE400). It is ideal for protecting low-voltage power circuits such as distribution boards and sub-distribution boards, as well as power circuits for communications, broadcasting, electricity, and railways, and various control equipment power circuits. 【Features】 ■ Equipped with a deterioration display function ■ Built-in disconnection mechanism for deterioration ■ Alarm contact output included ■ Continuous current interruption rating of 50kA ■ Excellent response characteristics (under 3ns) For more details, please refer to the catalog or feel free to contact us.

  • power supply
  • Other safety equipment
  • Protective Device

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Backup power instant low voltage protection device "Voltage Sag Protector"

Backup power instant low voltage protection device "Voltage Sag Protector"

Completely solve various power supply issues within one second of a sudden power outage! Applicable to various industries including semiconductors, LCDs, automotive, chemicals, and medical fields!

The voltage sag protector can be applied in various industrial fields, including semiconductors, LCDs, automotive, chemicals, and medical sectors. Unlike traditional uninterruptible power supply (UPS) systems that use battery storage for uninterruptible power supply, it can completely resolve various power issues within one second of an instantaneous power outage. It can reduce the electricity consumption of existing devices by 80%. 【Features】 ■ Suitable for countermeasures against instantaneous power outages and voltage drops caused by lightning, ice and snow, and typhoons. ■ Maintenance-free due to the use of long-life electric double-layer capacitors. ■ Normally uses commercial power supply, switching instantly to electric double-layer capacitors for backup during momentary dips. ■ Achieves low power consumption due to high efficiency. *For more details, please request materials or view the PDF data from the download section.

  • Circuit breakers and switches
  • Protective Device

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雷などによる瞬低対策に好適！『瞬時電圧低下保護装置 VSP』

雷などによる瞬低対策に好適！『瞬時電圧低下保護装置 VSP』

瞬低発生による製品生産ストップを回避！瞬低発生から超高検出＆バックアップ開始します。さらに13～15年の長寿命です。

UPS（無停電電源装置）からVSP（瞬時電圧低下保護装置）へ！ VSP(Voltage Sag Protector)は、SAG（瞬時電圧低下）を対象にした、 短時間の電源補償をおこなう装置です。 無停電電源供給のために伝統的に使用してきたバッテリー蓄電方式の UPS（無停電電源装置）とは異なり、VSPは装置が瞬時電圧低下された時、 1秒以内の瞬低にすべての電源の問題を完全に解決することが可能です。 豊富なラインナップ（全28シリーズ）で、全てのモデルに電気二重層 スーパーコンデンサー(EDLS)を採用しております。 【特徴】 ■長寿命13～15年。メンテナンスフリー（バッテリー交換不要）。 ■超高速切換時間 1/16cycleで検出、1/8cycleでバックアップ開始。 ■UPS無停電電源装置）と比べて軽量・小型・無騒音・安全 ■瞬低履歴モニター99回のSAG履歴が確認できます。 ■Bypass機能 ■ランニングコストが非常に安くすむ。10年間で7～15倍の低減が見込める。 ※詳しくは資料をダウンロードいただくか、お問い合わせください。

  • UPS/Uninterruptible Power Supply
  • Protective Device

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Basic Knowledge of Momentary Voltage Dips: Momentary Voltage Dip Explained

Basic Knowledge of Momentary Voltage Dips: Momentary Voltage Dip Explained

Typically occurs within 0.5 seconds! It continues until the fault in the transmission line is removed from the power system.

"Momentary voltage dip" is a phenomenon where the voltage drops momentarily for a few cycles. It mainly continues until the fault in the transmission line caused by events such as lightning is removed from the power system, typically occurring within 0.5 seconds. Causes of momentary dips and power outages include "lightning," as well as "typhoons, storms," and "earthquakes," among others. [Causes of Momentary Dips & Power Outages] ■ Lightning ■ Typhoons, storms ■ Earthquakes ■ Heavy snowfall ■ Bird nesting ■ Damage to utility poles due to vehicle collisions *For more details, please refer to the PDF document or feel free to contact us.

  • UPS/Uninterruptible Power Supply
  • Protective Device

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Speech Privacy Protection Device

Speech Privacy Protection Device

A simple structure and cost reduction! Invention of a privacy protection device that does not cause discomfort to third parties.

In response to situations where conversations should not be overheard by third parties, sound masking devices have already been developed, but these require the installation of multiple speakers. Our company has invented a "Speech Privacy Protection Device" consisting of a conversation communication unit, a masking sound generation unit, and a masking sound control unit. The masking sound does not cause discomfort to third parties and can protect speech privacy for multiple sets of conversations within a single room. [Research Overview] - Capable of protecting speech privacy for multiple sets of conversations within a single room - The masking sound does not cause discomfort to third parties - Simple configuration and cost reduction *For more details, please refer to the PDF materials or feel free to contact us.

  • Other security
  • Protective Device

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Overcurrent relay (motor overcurrent protection device)

Overcurrent relay (motor overcurrent protection device)

Custom products that match the characteristics of each motor.

This is an introduction to the "Overcurrent Relay" handled by Yamada Electric Manufacturing Company. 【Features】 ■ Single-phase OR-600 Series ○ OR-607 OR-627 OR-628 ○ Type: Single pole ○ Rated current: 125V/250V 15A/10A ○ Interrupting current: 125V/250V 60A/40A ○ Applicable monitor: 0.75KW ■ Three-phase OR-200 Series ○ OR-231 OR-232 OR-232C ○ Type: OR-231 → Two-pole, OR-232 OR-232C → Three-pole ○ Rated current: 125V/250V 15A/10A ○ Interrupting current: 125V/250V 60A/40A ○ Applicable monitor: 2.2KW For other functions and details, please feel free to contact us.

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Vacuum Pump Protection Device HN-S Type

Vacuum Pump Protection Device HN-S Type

This is a compact model developed for small vacuum pumps with a displacement of 5 m³/min or less.

The "HS Collector Series" provided by HRD Corporation is a high-performance, compact capture filter system that captures over 98% of particles. It promotes your company's environmental initiatives in conjunction with dry vacuum pumps and significantly contributes to obtaining ISO 14001 certification. The "HN-S type" is a small model developed for small vacuum pumps with a displacement of 5m³/min or less, with a standard piping diameter of 25A or less. Its internal structure is the same as the HS series and is made entirely of SUS, making it suitable for use in the food industry. (Mounting legs are optional.) For more details, please contact us or refer to the catalog.

  • Vacuum pump
  • filter
  • Protective Device

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Vacuum Pump Protection Device HN-B Type

Vacuum Pump Protection Device HN-B Type

It is used when a large amount of drainage of 10m3/min or more is discharged.

The "HS Collector Series" provided by H.R.D. Corporation is a high-performance, compact capture filter system that captures over 98% of particles. It promotes your company's environmental initiatives when used in conjunction with a dry vacuum pump and significantly contributes to obtaining ISO 14001 certification. The "HN-B type" is a large displacement type with a horizontal structure that uses three filters, designed for cases where a large amount of drainage of 10m³/min or more is discharged. For more details, please contact us or refer to the catalog.

  • Vacuum pump
  • filter
  • Protective Device

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Overload protection device "Torque Limiter"

Overload protection device "Torque Limiter"

Surely detects overload! Protects machines from overload with precise operation.

The "Torque Limiter" is an overload protection device that instantaneously disconnects the input and output during overload to protect the machine. Due to its single-position engagement mechanism, once the overload is removed, it automatically reconnects at the same torque and the same indexing position. Additionally, unlike friction-type devices, it can also handle harsh environments. 【Features】 ■ Reliable overload detection ■ Accurate operation to protect the machine from overload ■ Due to its single-position engagement mechanism, once the overload is removed, it automatically reconnects at the same torque and the same indexing position ■ Unlike friction-type devices, it can also handle harsh environments *For more details, please download the PDF or feel free to contact us.

  • Other machine elements
  • Protective Device

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Protection device for detecting abnormalities in railway vehicle transformers.

Protection device for detecting abnormalities in railway vehicle transformers.

Abnormalities in the vehicle transformer detected! A wide range of protective devices to prevent accidents before they occur.

Our company offers a variety of protective devices that detect abnormalities in vehicle transformers and prevent accidents before they occur. These devices are designed to withstand forced vibrations and impacts caused by vehicle operation, and they are built to endure flying debris, such as stones, during travel. 【Features】 ■ Temperature relay: Monitors the oil temperature inside the transformer tank ■ Oil flow relay: Detects oil flow and monitors the operating status of the oil pump ■ Oil level detector: Detects a decrease in the internal oil level ■ Pressure relief valve: Captures pressure increases inside the transformer and releases pressure instantly *For more details, please refer to the PDF document or feel free to contact us.

  • Other inspection equipment and devices
  • Transformers
  • others
  • Protective Device

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Overload protection device "TORQUE LIMITERS"

Overload protection device "TORQUE LIMITERS"

Outstanding performance and high reliability! Choose from a rich lineup of all 8 series.

"TORQUE LIMITERS" are overload protection devices that can accurately transmit torque. They have no backlash and high rigidity, with precise return positions after overload disconnection, and can detect overload. They employ a unique mechanical torque disconnection mechanism using ball & ball pockets and roller & roller pockets. 【Features of the TF Series】 ■ Directly mountable to tables, sprockets, pulleys, arms, etc. ■ Standardized small series ■ Minimum disconnection torque of 0.3 N·m ■ Have a long history, abundant track record, and high reliability ■ Suitable for Sundex D, DU, DR, and P series *For more details, please refer to the PDF document or feel free to contact us.

  • Torque Control
  • Protective Device

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Instantaneous voltage drop protection device compliant with SEMI2-F47/UL standards.

Instantaneous voltage drop protection device compliant with SEMI2-F47/UL standards.

Instantaneous low voltage protection device using large-capacity electric double-layer capacitors (compliant with SEMI2-F47/UL standards)

The "UNICap(R) SRT/PFU series" is a momentary voltage drop protection device that replaces traditional batteries from Eaton Corporation in the United States with large-capacity electric double-layer capacitors. By using capacitors that are more environmentally friendly instead of conventional lead batteries, it is possible to reduce the total cost of equipment maintenance. In particular, this power supply is designed to comply with the SEMI 2-F47 standard, considering its use in FAB environments such as semiconductor manufacturing plants. 【Features】 ■ Green technology ■ Full lineup (1kVA to 550kVA) ■ Up to 8Mw ■ Capacitor lifespan (10 to 15 years) ■ High efficiency, etc. *For more details, please download the PDF or feel free to contact us.

  • Pressure Control
  • Protective Device

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Free demo and testing of the device "Dacon Anshin" that protects processed goods from scratches is currently underway.

Free demo and testing of the device "Dacon Anshin" that protects processed goods from scratches is currently underway.

Depreciation in 13 months, just 4.7 months with unmanned operation! A device that prevents dents and scratches on produced goods. *Free provision of a catalog and a table of implementation results showcasing economic effects!

"Dakon Anshin" is a device designed to prevent dents and scratches that occur when products processed by NC automatic lathes and hot forging come into contact with each other as they are discharged from the machine. Traditionally, quality control requires constant human supervision, but by using "Dakon Anshin," it is possible to prevent dents and scratches while also achieving labor savings. In the case of introducing the SP-1 series, it can be depreciated in 13 months, and if operated unmanned, it can be amortized in 4.7 months! 《Currently, we are conducting a "free demo test" to confirm the high quality of the products.》 【Features】 - "Dakon" scratches can be used safely and for multiple purposes. - Increased productivity through short-term and long-term unmanned operation. - Easy operation! Equipped with casters for easy movement. *If you wish to request a demo test, please contact us with "Demo Request" clearly stated. *The comprehensive catalog and implementation results for "Dakon Anshin" can be viewed as a PDF from the download section.

  • Other processing machines
  • Protective Device

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Are you troubled by dents and scratches on your products? *Case studies are now available.

Are you troubled by dents and scratches on your products? *Case studies are now available.

A device to protect processed goods from scratches, "Dacon Anshin"! Reduces dents and achieves long hours of unmanned operation. Also compatible with airless technology!

Ito Precision Manufacturing's "Dacon Anshin" is a device designed to prevent dents and scratches (abrasions) that occur when products processed by NC automatic lathes, forging, pressing, etc., come into contact with each other as they are ejected from the machine. Traditionally, it was necessary for a person to be present for quality control, but by using this product, it prevents Dacon scratches and abrasions, achieving automation, labor reduction, and long hours of unmanned processing. Since it can also be proposed without air, it contributes to energy savings within the factory! ~ Currently, we are publishing a collection of 10 case studies that demonstrate the benefits of implementation! ~ For example, in the case of introducing the SP-2T model, defects reduced from 20% to less than 1%, resulting in a significant decrease in defective products and enabling cost reduction and labor hour reduction. 【Product Features】 - Multi-purpose use with "peace of mind" against "dents" - Increased productivity through short and long-term unmanned operation - Easy to operate and easy to move with casters 【Demo Units Available for Loan】 ★ We also offer demo and testing support. Please feel free to contact us. * For more details, please refer to the catalog and performance materials available for download in the PDF below. * Custom designs, manufacturing, and special specifications tailored to customer requests are also possible.

  • Other processing machines
  • Protective Device

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[NMR Pipe Protector Verification Results] Fukuoka Prefecture Condominium

[NMR Pipe Protector Verification Results] Fukuoka Prefecture Condominium

After 16 years of installation, the effectiveness verification shows a reduction in red rust blockage rate from 50.7% to 41.2%, an improvement of 18.7%! This demonstrates the effectiveness of red rust prevention and pipe lifespan extension.

A follow-up survey was conducted in a condominium in Fukuoka Prefecture, 16 years after the installation of the NMR pipe protector. Before installation, the joints of the water supply pipes in Rooms A and B were inspected with a fiberscope, revealing red rust blockage rates of 50.7% and 78.2%, respectively, indicating significant progression of red rust blockage and the need for early intervention. Consequently, the NMR pipe protector was installed in the water supply piping. One year after installation, a follow-up survey was conducted under the same conditions as before installation, and the red rust blockage rates for Rooms A and B were as follows: [One Year After Installation] Room A: 50.7% → 48% [5.3%] reduction improvement Room B: 78.2% → 74.1% [5.2%] reduction improvement [Sixteen Years After Installation] Room A: 50.7% → 41.2% [18.7%] reduction improvement Room B: 78.2% → 68.4% [12.5%] reduction improvement From the above reduction improvement rates in red rust blockage, it was demonstrated that the NMR pipe protector completely prevented the occurrence of new red rust and that the red rust blockage transformed into black rust with a volume reduction to one-tenth. Additionally, it was proven that as long as this condominium remains standing for another 20 or 30 years, pipe replacement will not be necessary.

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  • Piping Materials
  • Protective Device

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『MT-V24・MT-V11・MT-RS485』

『MT-V24・MT-V11・MT-RS485』

Optimal for instrumentation and process control signals! Coupling arrangements are also possible according to the required signals!

The "MT-V24, MT-V11, and MT-RS485" are integrated devices that include three types of elements: gas discharge tubes, varistors, and suppression diodes, all within a width of 6.2mm. They have a high capacity for surge current and can be arranged in series according to the required signals. You can choose between grounded and ungrounded types with a single ground. They are ideal for instrumentation and process control signals. 【Specifications】 ■ Model: MT-V24 (RS232), MT-V11 (RS422), MT-RS485 (RS485) ■ Rated Voltage: DC15V / DC12V ■ Surge Current Capacity: 5kA (8/20μs) ■ Dimensions: Width 75mm × Depth 30mm × Height 55mm *For more details, please feel free to contact us.

  • Other Connectors
  • connector
  • Protective Device

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DC surge protector for solar power generation (IEC certified) SPPV

DC surge protector for solar power generation (IEC certified) SPPV

Protecting you from electrical waves - the DC surge protector continues to operate as a reliable shield.

The plug-in surge protectors SPPVT2 and SPPVT12 have been developed specifically for applications in solar power generation. These devices protect electrical equipment from transient overvoltages caused by direct or indirect lightning strikes. Houses with solar power systems installed on their roofs have additional vulnerability factors, making surge protection necessary. In this case, a combination of Type 1 and Type 2 protection is typically required for DC protection. This is based on whether there are requirements for external lightning protection systems for the building. The surge protector SPPVT12 protects electrical equipment from transient overvoltages caused by direct lightning strikes. These surge protectors are suitable for various surge protection needs in many systems.

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Built-in separator agreement dimensions SPD

Built-in separator agreement dimensions SPD

Protecting equipment from lightning surges that enter through the power supply.

Ministry of Land, Infrastructure, Transport and Tourism Standard Specifications for Public Building Construction Compliant Products Ministry of Land, Infrastructure, Transport and Tourism Building Equipment Design Standards Compliant Products Class 2 (JIS C 5381-11) Compliant

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Electronic Circuit Protector

Electronic Circuit Protector

Optimal space design has been achieved! It is possible to interrupt at the precisely set current.

We would like to introduce our "Electronic Circuit Protector." We offer two types: the "topGuard series," which utilizes IO-Link communication for control and monitoring of power systems, and the "maxGuard series," which monitors the basic power system. This allows for a suitable space design due to the expansion concept based on the required number of systems, and it can accurately interrupt at the set current for low voltage circuits. 【Overview Specifications (Partial)】 ■ Operating temperature range: -25 to 55℃ ■ Wiring connection method: PUSH IN *For more details, please refer to the PDF document or feel free to contact us.

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