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Protective Device Product List and Ranking from 20 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Oct 15, 2025～Nov 11, 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:Oct 15, 2025～Nov 11, 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. アローズエンジニアリング Chiba//Testing, Analysis and Measurement
  3. 山田電機製造 Aichi//others
  4. 4 null/null
  5. 5 伊藤精密製作所 MSTEC事業部 Gifu//others
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Protective Device Product ranking

Last Updated： Aggregation Period:Oct 15, 2025～Nov 11, 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 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
  5. 5 Super Compact Design Torque Limiter - Overload Protection Device マツイ 東京本社

Protective Device Product List

31～45 item / All 53 items

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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.

  • Other electronic parts

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【Significant Increase in Energy Saving Effect!】Instant Voltage Drop Protection Device "VSP"

【Significant Increase in Energy Saving Effect!】Instant Voltage Drop Protection Device "VSP"

Significant reduction in running costs! Maintenance-free instant low protection device!

The VSP (Voltage Sag Protector) is a device that provides short-term power compensation specifically for voltage sags (momentary voltage drops). It detects and backs up within just 0.001 seconds from the occurrence of a sag. With a rich lineup of 28 series, all models are equipped with electric double-layer supercapacitors (EDLS). 【Features】 ○ Maintenance-free ○ Ultra-fast switching time ○ Lightweight, compact, silent, and safe ○ Momentary sag history monitor ○ Bypass function For more details, please contact us or download the catalog.

  • UPS/Uninterruptible Power Supply

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Handbook "Basic Knowledge of Instant Low" [What is the impact of instant low?]

Handbook "Basic Knowledge of Instant Low" [What is the impact of instant low?]

A brief moment of power outage can lead to the stoppage or malfunction of factory equipment! We are currently offering a handbook that contains basic knowledge about momentary power interruptions!

"Momentary voltage dip" refers to a power outage that occurs for a very short time, instantaneously. Power companies generally refer to outages lasting less than one minute. When a momentary dip occurs, it can lead to the stopping or malfunctioning of factory equipment each time. Additionally, it can cause defects in the products being produced and take time to restart the equipment, resulting in decreased production efficiency. In the past, a momentary dip of 0.07 seconds caused enormous damages exceeding several billion yen for one company. [Handbook Contents] ■ What is a momentary dip ■ Difference between momentary dip (instantaneous voltage drop) and power outage ■ Effects of momentary dip ■ Countermeasures for momentary dip (instantaneous voltage drop) ■ Features of momentary dip protection device VSP *For more details, please refer to the PDF document or feel free to contact us.

  • UPS/Uninterruptible Power Supply

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【BOURNS】DC Surge Protection (SPD) 1420A Series

【BOURNS】DC Surge Protection (SPD) 1420A Series

Maximum rated DC 1500V 50kA (8/20µs) surge response ◎ Applications include EV charging stations, power systems, solar power generation systems, etc.

The Bourns Model 1420A series is an SPD developed to protect the DC side of solar power generation systems. It is designed to protect against damage from lightning surges with a maximum rating of DC 1500V. The unique high-energy MOV technology design with Advanced Thermal Disconnectors (TD+) enhances the level of protection against direct or indirect lightning. It can be mounted on a DIN rail, and the lightning surge current rating is up to 50kA (8/20μs) per pole. ● Features - Unique high-energy MOV technology design with Advanced Thermal Disconnectors - Replaceable modular design - Protection for common mode and differential mode - Remote signaling capability - UL certified - High surge current discharge capacity of up to 50kA (8/20µs) - ROHS compliant For new adoptions, delivery issues, please feel free to download the materials, make inquiries, and consider our offerings. For inquiries regarding delivery times and pricing, please do not hesitate to contact us.

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  • Other power sources

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Vacuum pump protection device "HS Collector" *Catalog with usage examples available!

Vacuum pump protection device "HS Collector" *Catalog with usage examples available!

Captures over 98% of particles larger than 1μm! Efficiently captures oil mist, solvents, monomers, and oligomers in the vacuum line!

Our "HS Collector" is a high-performance, compact capture filter system that captures over 98% of particles. It efficiently captures oil mist, solvents, monomers, oligomers, and more in the vacuum line, developed with consideration for maintenance and chemical resistance. 【Features】 ■ Selection of Various Principles By selecting and adopting principles such as condensation, collision, and cooling, it captures over 98% of particles larger than 1μ from vaporized, diffused, and evaporated mist and powder in a vacuum. ■ Two Types of Filters ◎ CF-200 Type / A four-layer fiber structure used for capturing oils and droplets ◎ MF-130 Type / A washable sintered metal filter ■ Easy Maintenance Designed for filter replacement in a short time without the need for special tools. ■ System Design and Manufacturing We can accommodate the manufacturing of various systems that combine the collector and vacuum pump. *For specifications not listed in this catalog, please copy the sheet within the catalog, fill in the necessary information, and contact us. *For more details, please download the PDF or feel free to contact us.

  • Vacuum pump

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High-efficiency cold trap vacuum pump protection device 'HC-J Collector'

High-efficiency cold trap vacuum pump protection device 'HC-J Collector'

It is a high-efficiency cold trap suitable for the recovery of organic solvents through vacuum distillation, drying, etc.

The "HS Collector Series" provided by H.R.D. Corporation is a high-performance, compact capture filter system that captures over 98% of particles. When used in conjunction with a dry vacuum pump, it promotes your company's environmental initiatives and significantly contributes to obtaining ISO 14001 certification. The "HC-J Collector" is a cooling condenser that captures moisture, solvents, and other substances that cannot be mechanically aggregated, without using mechanical condensers like filters. Its body has a jacket structure, and the interior features a cold tube, making it a highly efficient cold trap. It is well-suited for the recovery of organic solvents in vacuum distillation and drying processes. For more details, please contact us or refer to the catalog.

  • Vacuum pump

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WOT type trap <Alternative to T type trap> Vacuum pump protection device

WOT type trap <Alternative to T type trap> Vacuum pump protection device

Alternative for Osaka Air Machine's T-type trap: protective device for oil rotary water-sealed vacuum pump.

The "WOT-type demi start trap" was developed as a substitute for the "T-type trap" of Osaka Air Machine Manufacturing Co., Ltd., which went out of business in September 2024. The internal structure is the same specification as the T-type trap, and it is equipped with a metal filter inside. For more details, please contact us or refer to the brochure.

  • Vacuum pump

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Device: DC High Voltage Meter Protection Device

Device: DC High Voltage Meter Protection Device

It is a device that monitors high DC voltage and prevents damage.

This is a device that prevents damage caused by instantaneous overshoot of the pointer due to surge voltage when there is an input requiring full-scale display on a DC high-voltage voltmeter.

  • Power Monitoring Equipment

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Super Compact Design Torque Limiter - Overload Protection Device

Super Compact Design Torque Limiter - Overload Protection Device

A ball ratchet type torque limiter boasting a high precision with an operating error of ±5%. Usable up to a maximum of 3,000 Nm/8,000 rpm as standard.

This product is a high-performance torque limiter (overload protection device) that boasts high precision with an operating error of ±5%. It achieves completely backlash-free torque transmission in both axial and radial directions through a ball ratchet mechanism. We are prepared to meet a wide range of customer needs, not only for integration with various couplings such as element couplings and rigid couplings but also for mounting on motor flanges. It supports a maximum rotational speed of 8,000 rpm and a maximum torque of 3,000 Nm as standard. *For more details, please refer to the materials available by clicking "Download Catalog."

  • Power Transmission Equipment

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Overload protection device "Torque limiter"

Overload protection device "Torque limiter"

Ensure reliable detection of overload and isolate input and output.

The overload protection device instantly disconnects the input and output during overload to protect the machine. It reliably detects overload, disconnects the input and output by the drive key coming off the groove, and automatically reconnects at the same torque and the same indexing position once the overload is removed. The torque setting is done with a built-in torque spring, eliminating the hassle of fine adjustments. Additionally, it serves as a flexible coupling and can be used in both axial alignment and wrapping methods. Furthermore, due to the power transmission via the drive key, it can be used in oil without any issues. 【Features】 ○ Reliable overload detection ○ Accurate operation to protect the machine from overload For more details, please contact us or download the catalog.

  • Torque Control

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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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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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[Research Material] Global Market for Low Voltage Protection & Control Devices

[Research Material] Global Market for Low Voltage Protection & Control Devices

Global Market for Low Voltage Protection & Control Devices: Protection Devices, Switching Devices, Monitoring Devices, Residential, Commercial, Industrial

This research report (Global Low Voltage Protection and Control Devices) investigates and analyzes the current status and outlook for the global market of low voltage protection and control devices over the next five years. It includes information on the overview of the global low voltage protection and control devices market, trends of major companies (sales, selling prices, market share), market size by segment, market size by major regions, and distribution channel analysis. The market segments by type include protection devices, switching devices, and monitoring devices, while the segments by application focus on residential, commercial, and industrial uses. The regional segments are divided into North America, the United States, Europe, Asia-Pacific, Japan, China, India, South Korea, Southeast Asia, South America, the Middle East, and Africa to calculate the market size of low voltage protection and control devices. It also includes the market share of major companies in low voltage protection and control devices, product and business overviews, and sales performance.

  • Other services

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