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

46~53 item / All 53 items

Displayed results

[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

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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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[Research Material] Global Market for AC Surge Protective Devices (SPD)

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

This research report (Global AC Surge Protective Device (SPD) Market) investigates and analyzes the current status and outlook for the global market of AC surge protective devices (SPDs) over the next five years. It includes information on the overview of the global AC surge protective device (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 of the AC surge protective device (SPD) market by type include solid-state AC surge protective devices and hybrid AC 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 AC surge protective devices (SPDs). It also includes the market share of major companies in the AC surge protective device (SPD) market, product and business overviews, and sales performance.

  • Other services

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[Research Material] Global Market for Overload Protection Devices

Global Market for Overload Protection Devices: Automatic, Manual, Generators, Motors, Transformers, Capacitors, Others

This research report (Global Overload Protectors Market) investigates and analyzes the current state and outlook for the global overload protection device market over the next five years. It includes information on the overview of the global overload 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 overload protection device market focus on automatic and manual devices, while the segments by application cover generators, motors, transformers, capacitors, and others. The regional segments calculate the market size of overload protection devices 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 overload protection device sector, product and business overviews, and sales performance.

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