Last Updated： Aggregation Period:Jul 08, 2026～Aug 04, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Jul 08, 2026～Aug 04, 2026
This ranking is based on the number of page views on our site.
Last Updated： Aggregation Period:Jul 08, 2026～Aug 04, 2026
This ranking is based on the number of page views on our site.
1～30 item / All 56 items
Power supply SPD conforming to JIS standard dimensions for circuit breakers (3-pole and 2-pole).
This is a power supply SPD (surge protective device) that protects AC100V & 200V/400V power circuits from lightning surges, conforming to the dimensions of JIS standard circuit breakers for wiring (for 3-pole and 2-pole use).
SPD for JIS Class 2 power supply evolved with a new mechanism.
The "SmartSPD for Power / SPD for Power" lineup focuses on surge protective devices (SPDs) for power circuits that comply with JIS standards for direct lightning surges of 10/350μs and induced lightning surges of 8/20μs. The products are available in various types according to circuit configurations, and there are also component types. SmartSPD features high functionality that displays the recommended replacement timing based on lightning surge measurement values. 【Features】 ■ Degradation display ■ Improved separation performance ■ Compliant with JIS Class 2 ■ Plug/jack contact ■ DIN rail (35mm width) mounting structure *For more details, please refer to the catalog. Feel free to contact us with any inquiries.
Newly implemented smart feature. Multi-core unit type SPD that protects equipment from lightning.
"HOWL2" is a multi-core unit type SPD equipped with a new function to protect equipment from lightning. It features an innovative status display that clearly shows the SPD's status using LEDs. It also includes a recommended replacement indication function before failure, which triggers a signal from the alarm terminal when replacement is recommended. The visualization of lightning surges has been realized, displaying the number of operations of the unit on a 7-segment display during lightning surge intrusion. 【Features】 ■ Innovative status representation ■ Realization of lightning surge visualization ■ Satisfaction of multi-core insertion ■ Additional features considering insulation testing *For more details, please refer to the catalog. Feel free to contact us with any inquiries.
35mm wide DIN rail mount compatible! SPD that eliminates potential differences between different groundings during lightning strikes.
The "MZS-EB/MZG-EB/MZCR-EB" is a grounding SPD (surge protective device) designed to eliminate potential differences between different grounding systems during lightning strikes. It is RoHS compliant and can be mounted on a DIN rail (35mm). With the technology and know-how we have cultivated over many years, we offer comprehensive proposals for risk assessment, lightning observation and prediction, and protection from all angles. 【Features】 ■MZG-EB: Supports impulse discharge currents up to 100kA (direct lightning waveform 10/350μs) ■MZS-EB: Supports impulse discharge currents up to 75kA (direct lightning waveform 10/350μs) ■MZCR-EB: Supports impulse current withstand up to 20kA (induced lightning waveform 8/20μs) For more details, please refer to the catalog or feel free to contact us.
Space-saving installation possible! SPD that protects equipment from lightning surges invading communication and signal circuits.
The "ZP type" is a slim communication SPD (surge protective device) that protects equipment from lightning surges entering communication and signal circuits. It complies with JIS C 5381-21 Category C2 and D1. It features a plug-in design that excels in maintainability, with a structure that does not cause circuit interruption during plug removal. It also includes a degradation display function (using the dedicated tester "ZPT1 type" sold separately). 【Features】 ■ Slim design allows for space-saving installation ■ DIN rail (35mm) mounting structure ■ Complies with the Ministry of Land, Infrastructure, Transport and Tourism's standard specifications for public building construction ■ Complies with the Ministry of Land, Infrastructure, Transport and Tourism's building equipment design standards ■ Compliant with RoHS directives For more details, please refer to the catalog or feel free to contact us.
Space-saving type suitable for built-in devices! SPD that protects the AC power circuit from lightning surges.
The "PMZ type" is a power supply SPD (surge protective device) suitable for incorporation into devices such as PCS (power conditioners) used in solar power generation, as well as within lighting panels. In the event of degradation failure, it prevents abnormal heating through an internal disconnection mechanism. It is equipped with a highly visible LED for degradation failure indication. 【Features】 - Space-saving design suitable for incorporation into devices - Can simultaneously protect between lines and to ground with a single unit - Complies with JIS C 5381-1 Class II - Conforms to the Ministry of Land, Infrastructure, Transport and Tourism's Building Equipment Design Standards and the Ministry of Land, Infrastructure, Transport and Tourism's Standard Specifications for Public Building Construction - Compliant with RoHS Directive For more details, please refer to the catalog or feel free to contact us.
Protect communication devices from abnormal voltage! Communication Smart SPD with recommended replacement indication function.
The "SMB-KRAPS1 type" is a communication SPD used to protect equipment from abnormal voltage and current induced by communication lines when mounted on the Tyco Electronics' Krone LSA-PLUS separation module. Additionally, it monitors degradation caused by repeated lightning surges and has a function to display a recommended replacement level before the SPD's protective performance is lost, as well as a function to notify when the SPD has degraded. 【Features】 ■ Communication SPD for Krone LSA-PLUS terminals ■ Compliant with JIS C 5381-21 / IEC 61643-21 Category C2, D1 ■ Displays recommended replacement level and surge operation count (LED) ■ Equipped with degradation indication function ■ Compliant with RoHS directive For more details, please refer to the catalog or feel free to contact us.
Standard specifications for public building construction by the Ministry of Land, Infrastructure, Transport and Tourism, suitable product JEC-2374:2015 for the Girei area.
MPGLS-B6D (for outdoor use: heavy salt resistance) MPGLSI-B6 (for indoor use) MPGLSI-B6-S (for indoor installation) Protects equipment from lightning surges entering from high-voltage and extra-high-voltage power distribution lines. Compliant with JEC standards. A lineup is available for areas prone to severe lightning, salt resistance, indoor use, and cubicle use. Lightning arresters (such as arresters, SPD, LA, surge protectors, etc.), lightning countermeasure products, lightning surge countermeasure products, induced lightning countermeasures, manufactured by Otowa Electric Industry, a specialized manufacturer of lightning protection.
The lightning arrester features a double skirt structure that excels in dirt resistance and has low leakage current, making it suitable for harsh environments such as salt damage areas.
Please specify the LA connector type for the Tohoku region specifications. Ministry of Land, Infrastructure, Transport and Tourism Standard Specifications for Public Building Construction Compliant Product For salt damage, dust, and high humidity areas JEC-2374:2015 *Rated voltage 4.2kV available (GL-B3DG5-T, GL-B3DG5). The insulating pipe structure with a double skirt has excellent dirt resistance characteristics and low leakage current. It is suitable for harsh environments such as salt damage areas. It protects equipment from lightning surges entering from high voltage and extra high voltage distribution lines. JEC compliant. Compatible with 3.3kV and 6.6kV. Lightning arresters (Aresta, SPD, LA, surge protectors, etc.), lightning countermeasure products, lightning surge countermeasure products, induced lightning countermeasures, manufactured by Otowa Electric Industry, a specialist in lightning protection.
Surge protection device for equipment, circuit breaker type lightning arrester.
Lightning-resistant equipment is a product for equipment protection. 【Features】 ○ Circuit breakers and lightning arresters are integrated! ○ Installation work is simplified, improving safety and reliability. ○ It does not take up installation space. ○ It is economical in terms of total cost. ● For other functions and details, please contact us.
FC cutout that helps prevent equipment failure due to lightning damage!
We offer a super compact type of FC cutout with built-in ZnO elements, known as the ZnO element-equipped FC cutout (box type). When a lightning surge enters, the ZnO element suppresses the voltage and eliminates the lightning surge. This helps prevent fuse blowouts and contributes to the prevention of equipment failures due to lightning damage. 【Features】 - More space-saving and economical than using lightning arresters and cutouts separately - No fuse blowouts due to lightning surges - Excellent non-linearity, effectively suppressing lightning surges without continuous current, and performs well under multiple lightning responsibilities - Smaller cross-sectional area with greater discharge capacity compared to SiC elements, enabling miniaturization - High performance and high reliability that exceed JIS standard values *For more details, please download the PDF or feel free to contact us.
Do you know? Thunder can destroy your precious things, and it means you can protect your precious things from thunder.
It protects high-pressure equipment. It can be used for various purposes, such as protecting communication devices when lightning surges flow on the secondary side of a high-pressure transformer.
Monitor fuse status with alarm contacts and display window! Quick response is possible when the varistor deteriorates.
The "Alarm Fuse Unit (FZU)" is a product that is compatible with our P4 type alarm fuse receptacle. In the event of varistor degradation due to excessive surges, the fuse within the FZ unit disconnects the varistor to prevent secondary damage. This unit protects between lines and between each line and ground. 【Features】 ■ It is a plug-in type for our P4 type fuse receptacle, making replacement easy. ■ Monitors the fuse status with alarm contacts and a display window. ■ Allows for prompt response in the event of varistor degradation. *For more details, please refer to the PDF document or feel free to contact us.
The ITV cameras, fire alarms, and internal broadcasting equipment also have a lot of achievements in lightning protection measures!
We would like to introduce examples of lightning damage countermeasures for electrical equipment in factories. In advanced factories, all equipment is highly digitized and interconnected through a network. As a result, damage in one area can often spread throughout the entire network, making it necessary to consider lightning protection measures for the entire factory. Our company focuses on lightning protection measures through on-site surveys, and we have a track record of implementing these measures in factories across various locations. We have received particularly high praise for our countermeasures concerning power equipment, such as servers, inverters, and DC power supplies, which are significantly affected by lightning, as well as instrumentation devices that are essential for plant operations. 【Main Lightning Protection Products (Partial)】 ■ Surge Protectors for Power Supply ・VAJ Series ・VNJ Series ■ Surge Protectors for Communication and Signal ・VTJ Series ・VCJ Series *For more details, please download the PDF or feel free to contact us.
We are taking measures for equipment that may be affected by lightning surges!
We would like to introduce examples of lightning damage countermeasures for electrical equipment at dams. Dams are located in mountainous areas with a high frequency of lightning strikes, and due to the distance between the monitoring station and the equipment within the dam body, an environment conducive to potential differences is created. Lightning strikes in the vicinity have caused damage to dam management equipment, and if the dam management system stops, it could lead to the worst-case scenario, making reliable lightning protection measures necessary. Our company has installed the VAJ series at the main power panel of the electrical room to protect the monitoring station's equipment from direct lightning surges, and we have provided grounding SPDs to equalize potential between grounding electrodes. [Case Overview] - Proposals for lightning protection measures suitable for the local situation and design of lightning protection panels - Implementation of countermeasures for equipment at risk of lightning surges, including meteorological observation devices, discharge warning systems, CCTV cameras, telephone lines, leakage flow meters, water level gauges, seismometers, audit corridor lighting, and signal lines between the monitoring station and each gate. *For more details, please download the PDF or feel free to contact us.
Install lightning rods on pillars and other structures to protect the main body of the substation equipment (wireless receiver, amplifier)!
We would like to introduce examples of lightning damage countermeasures for electrical equipment in disaster prevention administrative wireless systems. Disaster prevention administrative wireless systems are essential equipment for local governments' crisis management, serving as a means of communication to convey emergency information to residents. In recent years, there has been an increasing trend of operational failures and damage to wireless substation equipment due to lightning strikes, making it crucial that these systems function reliably when needed. It is necessary to implement lightning protection measures that do not compromise the functionality of such highly public wireless equipment. Our company often installs automatic power lightning protection devices with built-in lightning arresters and auto control breakers, as well as emergency power switching panels. 【Main Lightning Protection Products】 ■ Lightning Arresters for Power Supply ・VAJ Series ・VNJ Series ■ Lightning Protection Related Products ・ALPS Series ・Emergency Power Switching Panels *For more details, please download the PDF or feel free to contact us.
雷サージのエネルギー全体を減衰し、電気・電子機器を保護。激雷地域で培った豊富なノウハウをもとに高信頼の耐雷対策をご提案
当社は、激雷地域として知られる北陸で培った実績に基づくノウハウと 技術力を活かして開発した「高速回線避雷器」をラインアップしています。 並列素子と直列素子を組み合わせた“直列型”を採用し、 雷サージのエネルギー全体（電圧×電流×時間の3要素）を減衰させることで 雷サージ侵入を抑制し、電気・電子機器を安全に保護します。 当社では、雷対策のスペシャリストとして 雷から守りたい機器の種類ごとに適した避雷器の提案が可能です。 【特長】 ■雷から電気・電子機器を守る避雷器 ■雷サージのエネルギー全体を減衰させるサージエネルギー減衰方式 ■北陸の激雷地域で培った技術と実績に基づいた設計 ■電源用、通信・信号用をラインアップ ■FDTD法による3D解析で雷サージの侵入が少ないことを検証済み ※詳しくは資料をご覧ください。お問い合わせもお気軽にどうぞ。
![[Information] Frequently Asked Questions about Lightning Arresters](https://image.mono.ipros.com/public/product/image/2065439/IPROS12296183320916204454.png?w=280&h=280)
Explanation of the service life, installation, and wiring connections of high-speed line lightning protection units!
In this document, we present frequently asked questions about lightning arresters in a Q&A format. We answer various questions, including the differences between high-speed line lightning protection units and general lightning arresters, their effectiveness against lightning surges entering through grounding wires, and the lifespan of high-speed line lightning protection units. If you have any questions, please feel free to contact us. 【Content (partial)】 ■Q. What is the main difference between high-speed line lightning protection units and general lightning arresters? ■Q. Is there any effectiveness against lightning surges entering through grounding wires? ■Q. What is the lifespan of a high-speed line lightning protection unit? ■Q. What is the difference between a lightning rod and a lightning arrester (SPD)? ■Q. Where should a high-speed line lightning protection unit be installed? *For more details, please download the PDF or feel free to contact us.
It uses a resistance method with an insertion loss of 5.7 dB! The coaxial lightning arrester protects the equipment from induced lightning from the antenna.
We would like to introduce our company's "Converters/Lightning Arresters." The impedance converter is a 50Ω⇔75Ω converter that can be used over a wide bandwidth. It uses a resistive method, with an insertion loss of 5.7dB. Additionally, we offer coaxial lightning arresters to protect equipment from induced lightning from antennas. 【Lineup】 ■ N-type NC impedance converter 4GHz ■ BNC type BNCC impedance converter 4GHz ■ N-type F impedance converter 4GHz ■ N-type NC impedance converter 8GHz ■ Coaxial lightning arrester *For more details, please refer to the PDF document or feel free to contact us.
A lineup of molybdenum lightning arresters for power supply, signal, and coaxial lines!
This catalog introduces the "Molybdenum Lightning Arresters" handled by Japan Lightning Research Vector. We offer a variety of products including the "NR Series" for power supply lightning arresters, the "NRP Series" for plug-in signal lightning arresters, and the "NRAT Series" for coaxial line lightning arresters. Additionally, we provide information on the discharge mechanism and the features of molybdenum lightning arresters. [Contents] ■ Molybdenum Elements ■ Molybdenum Lightning Arresters for Power Supply ■ Molybdenum Lightning Arresters for Signal Use ■ Molybdenum Lightning Arresters for Coaxial Lines ■ Related Products *For more details, please refer to the PDF document or feel free to contact us.
Lightning protection devices! We have a wide range of surge protectors for instrumentation systems.
This catalog introduces the "General Purpose Lightning Arresters" handled by Japan Lightning Research Vector. We offer a variety of products, including the high-capacity power supply lightning arrester "SJ Series," small-capacity signal lightning arresters "SK, SF Series," and coaxial N-type lightning arresters "AT Series." Additionally, we provide information on the types of lightning surges, the mechanisms of lightning arresters (SPD), and how to choose a lightning arrester. [Contents] ■ What is a lightning arrester? ■ Lightning arresters for power supply ■ Lightning arresters for signals ■ Lightning arresters for coaxial connectors ■ Lightning surge counters *For more details, please refer to the PDF materials or feel free to contact us.
High-performance SPD (surge protective device) that monitors the recommended replacement period based on lightning surge measurement values and supports remote monitoring via LAN.
A system type of Smart SPD equipped with exchange recommendation display and lightning surge measurement functions has been introduced, which supports remote monitoring. You can monitor the status at any time from your PC via LAN.
Know when to replace the product before it breaks! Know how many times the product has operated! Understand the product's condition without having to go on-site!
The "Smart SPD" is a product designed to protect communication equipment and devices from lightning strikes. This product enables deterioration diagnosis display, remote monitoring (contact monitoring), and operation count display. We offer various variations to match different types of communication lines. It complies with the new JIS (JIS C 5381-21). For more details, please feel free to contact us.
LAN surge protector for protecting devices used in LAN lines from lightning surges.
The "LAN SPD" is a surge protective device (lightning arrester) for LAN lines such as 1000BASE-T and 10BASE-T, designed to protect equipment from lightning surges. Our LAN SPD comes in two types: a "bypass type" that diverts lightning surges to the ground when they enter, and an "insulated type" that electrically isolates the primary and secondary sides, eliminating the need for grounding. The bypass type also supports IEEE802.3af (PoE) and IEEE802.3at (PoE Plus) lines. 【Features】 ■ Compatible with Gigabit Ethernet ■ Insulator that does not require grounding ■ Bypass type that diverts lightning surges to the ground wire ■ DIN rail (35mm) mounting structure ■ Allows for collective grounding on DIN rail (conductive) *For more details, please refer to the PDF document or feel free to contact us.
Signal SPD with pressure-resistant explosion-proof structure for use in explosion-proof areas such as petrochemical plants.
The "EX-L" type is an explosion-proof signal SPD (surge protective device) designed to protect equipment from abnormal voltages induced by communication and signal cables in explosion-proof areas such as petrochemical plants and heavy chemical factories. It implements a CLP-" " type communication and signal SPD that complies with JIS C 5381-21 categories C2 and D1. 【Features】 ■ For signal use ■ Certified explosion-proof equipment (Certification number TC19314) ■ Applicable gas or vapor explosion grade and ignition degree: IIBT6 (For explosive gases with an ignition temperature exceeding 85°C and below 100°C) For more details, please refer to the catalog or feel free to contact us.
Power supply SPD with pressure-resistant explosion-proof structure used in explosion-proof areas such as petrochemical plants.
The "EX-P type" is a power supply SPD (surge protective device) with a pressure-resistant explosion-proof structure, used in explosion-proof areas such as petrochemical plants and heavy chemical factories. It implements the MZS-200AV type SPD for power supply, compliant with JIS C 5381-1 Class I and II. 【Features】 ■ The MZS-200AV type is equipped with a deterioration indication function and an alarm contact output function during deterioration. ■ Certified explosion-proof equipment (Certification number TC19315). ■ Applicable gas or vapor explosion grade and ignition degree: IIBT6 (For explosive gases with an ignition temperature exceeding 85°C and below 100°C). For more details, please refer to the catalog or feel free to contact us.
