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

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

31~45 item / All 53 items

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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

  • Other safety equipment

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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 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?]

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

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!

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'

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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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

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"

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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[Research Material] Global Market for DC SPD (Surge Protective Device)

Global Market for DC SPD (Surge Protective Devices): Solid-State DC Surge Protective Devices, Hybrid DC Surge Protective Devices, Industrial, Commercial ...

This research report (Global DC SPD (Surge Protective Device) Market) investigates and analyzes the current status and outlook for the global market of DC SPDs (Surge Protective Devices) over the next five years. It includes information on the overview of the global DC SPD market, trends of major companies (sales, selling prices, market share), market size by segment, market size by major regions, and distribution channel analysis. The segments by type in the DC SPD market include solid-state DC surge protective devices and hybrid DC surge protective devices, while the segments by application cover industrial, commercial, residential, and others. The regional segments are categorized 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 DC SPDs. The report also includes the market share of major companies in the DC SPD market, product and business overviews, and sales performance.

  • Other services

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[Research Material] Global Market for Leakage Protection Devices

World Market for Leakage Protection Devices: 1P, 2P, 3P, Others, Residential, Commercial Buildings, Industrial, Others

This research report (Global Earth Leakage Protection Market) investigates and analyzes the current status and outlook for the global market of leakage protection devices over the next five years. It includes information on the overview of the global leakage protection device market, trends of major companies (sales, selling prices, market share), market size by segment, market size by major regions, and distribution channel analysis. The segments by type in the leakage protection device market include 1P, 2P, 3P, and others, while the segments by application cover residential, commercial buildings, industrial, and others. 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 leakage protection devices. It also includes the market share of major companies in the leakage protection device sector, product and business overviews, and sales performance.

  • Other services

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[Research Material] Global Market for Bearing Protection Devices (BPD)

Global Market for Bearing Protection Devices (BPD): Permanent Protection, Non-Permanent Protection, Oil and Gas, Chemical Processing, Mining, Pulp and Paper, Metal Processing, Others

This research report (Global Bearing Protection Device (BPD) Market) investigates and analyzes the current state and outlook for the global market of bearing protection devices (BPD) over the next five years. It includes information on the overview of the global bearing protection device (BPD) 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 for bearing protection devices (BPD) focus on permanent protection and non-permanent protection, while the segments by application cover oil and gas, chemical processing, mining, paper and pulp, metal processing, and others. The regional segments calculate the market size of bearing protection devices (BPD) by dividing them into North America, the United States, Europe, Asia-Pacific, Japan, China, India, South Korea, Southeast Asia, South America, the Middle East, and Africa. It also includes the market share of major companies in the bearing protection device (BPD) market, product and business overviews, and sales performance.

  • Other services

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Lightning protection measures for surveillance cameras - SPD for surveillance cameras.

For lightning surge protection of network cameras! It can be installed close to outdoor surveillance cameras.

We offer "SPD for surveillance cameras" to protect against lightning surges for surveillance cameras connected via coaxial cables (BNC connectors) or LAN cables, as well as network cameras. With a simple structure, installation and wiring are easy, and no electrical work qualifications are required. It effectively directs lightning surges entering through common mode to surge protection components (MOV: varistor, GDT gas discharge tube, ABD: avalanche breakdown diode, etc.) along a single path, providing excellent protection performance between lines. Please feel free to contact us if you have any requests. 【Features】 ■ High performance for professional use ■ Easy installation and wiring ■ Status display indicating lifespan ■ Can be connected to ACM series and Thunder Blocker Pro for grounding ■ Easy protection for devices connected to OA taps *For more details, please refer to the PDF materials or feel free to contact us.

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  • Other safety equipment

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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

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