We have compiled a list of manufacturers, distributors, product information, reference prices, and rankings for Protective Device.
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Protective Device Product List and Ranking from 21 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 03, 2025～Sep 30, 2025
This ranking is based on the number of page views on our site.

Protective Device Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 03, 2025～Sep 30, 2025
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 日本システム企画 東京本社　 Tokyo//Other manufacturing
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Protective Device Product ranking

Last Updated： Aggregation Period:Sep 03, 2025～Sep 30, 2025
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. 4 Backup power instant low voltage protection device "Voltage Sag Protector" アローズエンジニアリング
  5. 5 Vacuum Pump Protection Device HN-S Type 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.

Protective Device Product List

1～15 item / All 53 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

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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

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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
  • Other electronic parts

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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

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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

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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

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[Case Study] Machinery Equipment Company (Power Supply for Factory Equipment, Server Protection)

[Case Study] Machinery Equipment Company (Power Supply for Factory Equipment, Server Protection)

We would like to introduce a case where we switched to "Furse products" for lightning strike protection.

We would like to introduce a case study requested by a machinery equipment company regarding the power supply for factory equipment and the protection of servers. After the implementation, the person in charge stated, "We had been installing SPDs for a long time, but we still experienced failures in our equipment and SPDs. We switched to Furse products, and since then, we have had no issues and feel secure." 【Case Study】 ■ Client: Machinery Equipment Company ■ Purpose: Protection of factory equipment power supply and servers ■ Feedback from the person in charge: - We had been installing SPDs for a long time, but we still experienced failures in our equipment and SPDs. - We switched to Furse products. - Since then, we have had no issues and feel secure. *For more details, please refer to the PDF document or feel free to contact us.

  • Other safety equipment

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[Case Study] Disaster Prevention Company (Protection of Automatic Fire Alarms)

[Case Study] Disaster Prevention Company (Protection of Automatic Fire Alarms)

Case study at a disaster prevention company! Has your automatic fire alarm system ever been damaged by lightning?

We would like to introduce a case study for the protection of automatic fire alarms, requested by a disaster prevention company. After the implementation, the person in charge stated, "There have been many issues with automatic fire alarms for a long time, and it has been very troublesome. Since this is equipment related to human life, it is important that it can be used reliably." 【Case Study】 ■Client: Disaster Prevention Company ■Objective: Protection of automatic fire alarms ■Feedback from the person in charge: - There have been many issues with automatic fire alarms for a long time, and it has been very troublesome. - Since this is equipment related to human life, it is important that it can be used reliably. *For more details, please refer to the PDF document or feel free to contact us.

  • Other safety equipment

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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

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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

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Ideal for lightning protection! Examples of the use of instantaneous voltage drop protection devices in the semiconductor and wafer industry.

Ideal for lightning protection! Examples of the use of instantaneous voltage drop protection devices in the semiconductor and wafer industry.

Avoid product production stoppage due to momentary voltage drops! Introducing some examples of troubles in the semiconductor, wafer, and FPD industries, along with successful cases of utilizing momentary voltage drop protection devices!

"Momentary voltage drop" refers to a brief, instantaneous decrease in voltage. Countermeasure devices have transitioned from UPS (Uninterruptible Power Supply) to VSP (Voltage Sag Protector)! The VSP (Voltage Sag Protector) is a device that provides short-term power compensation specifically for SAG (momentary voltage drops). Accidents and troubles frequently caused by momentary voltage drops due to lightning in the semiconductor, wafer, and FPD industries include: ■ Occurrence of defects in semiconductor manufacturing equipment (decreased yield) ■ Delays in semiconductor production schedules (delivery delays) ■ Increased costs due to product defects and equipment startup time losses ■ Decreased reliability among stakeholders Success stories from the introduction of momentary voltage drop protection devices: ■ Improved stability of semiconductor quality ■ Maintenance-free operation of equipment, with a lifespan of 13 to 15 years ■ Landing costs reduced to as low as one-twelfth, resulting in energy savings ■ Low introduction costs ■ Small footprint allows for effective use in clean rooms ■ No harmful substances used *For more details, please download the materials or contact us.

  • UPS/Uninterruptible Power Supply

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Ideal for lightning protection! Examples of using instantaneous voltage drop protection devices in the data center industry.

Ideal for lightning protection! Examples of using instantaneous voltage drop protection devices in the data center industry.

Avoid product production stoppages due to momentary voltage drops! Introducing some examples of troubles in the data center industry and successful cases of utilizing momentary voltage drop protection devices!

"Momentary voltage sag" refers to a brief, instantaneous drop in voltage. The countermeasure device has shifted from UPS (Uninterruptible Power Supply) to VSP (Voltage Sag Protector)! VSP (Voltage Sag Protector) is a device that provides short-term power compensation specifically for SAG (momentary voltage sag). Common incidents and troubles in the data center industry caused by momentary voltage sags due to lightning and other factors: ■ The cooling system's pump has stopped. ■ The backup for the server has failed. ■ Cloud outages have occurred. Success stories from the introduction of momentary voltage sag protection devices: ■ The cooling system's pump has not stopped. ■ The backup for the server has not failed. ■ The frequency of outages has decreased. *For more details, please download the materials or contact us.

  • UPS/Uninterruptible Power Supply

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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

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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

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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.

  • Other electronic parts

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