Class 1 & 2 SPD external isolator (fuse) and SPD stored in the panel.
Ministry of Land, Infrastructure, Transport and Tourism NETIS Registered Product (Class 2 Compatible SPD Section) Ministry of Land, Infrastructure, Transport and Tourism Standard Specifications for Public Building Construction Compatible Product (SPD Section) Ministry of Land, Infrastructure, Transport and Tourism Building Equipment Design Standards Compatible Product JIS C 5381-11 Compliant (SPD Section) *“Imurai” is a registered trademark of Otowa Electric Industry Co., Ltd. Protects equipment from lightning surges that enter through power sources and grounding (earth). Induced lightning compatible. JIS compliant. A standard SPD that can be installed in distribution boards and sub-distribution boards. SPD, lightning arresters (such as arresters and surge protectors), lightning protection products, lightning surge protection products, induced lightning measures, and lightning protection products from the specialized manufacturer Otowa Electric Industry Co., Ltd.
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basic information
*Features* 1. SPD external separator (fuse) and SPD housed in the panel 2. Safety features even during deterioration (SPD section) - Built-in automatic disconnection device - SPD function indicator - Deterioration contact output compatible (S type only) 3. Excellent responsiveness and no continuous current 4. Compliant with RoHS regulations
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We manufacture lightning protection panels tailored to your needs, such as rack-mounted types for solar power systems. 【Applications】 ＜Class 1＞ Protects equipment from lightning surges entering from the power supply (direct lightning strike protection). SPD panel with built-in SPD (surge protective device, arrester) and SPD external separator for Class 1 compatible power supplies. Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, 1φ2W, 1φ3W, 3φ3W, AC100V, AC200V, AC400V, for lighting and power. ＜Class 2＞ Protects equipment from lightning surges entering from the power supply (induced lightning protection). SPD panel with built-in SPD (surge protective device, arrester) and SPD external separator for Class 2 compatible power supplies. Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, 1φ2W, 1φ3W, 3φ3W, AC100V, AC200V, AC400V, for lighting and power.
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Company information
OTOWA is the only manufacturer in Japan specializing in lightning protection, having explored "lightning" since its founding. We want to create a safe and secure society where people are not afraid of the natural threat of "lightning." We will realize this wish with our advanced lightning protection systems. ◆ A wide range of product lineup We offer a variety of products, including surge protectors for power distribution, as well as those for offices, factories, railway vehicles, and general households. We also accommodate custom orders, so please feel free to consult with us. ◆ Consulting for lightning protection Lightning protection varies depending on various conditions such as location. OTOWA will propose the most suitable lightning protection measures for those conditions. ◆ World-class "lightning" testing facilities Using top-class testing equipment and a variety of testing facilities, we conduct product evaluation tests and development in-house. Our achievements are highly regarded, and we also accept contract testing (Lightning Technology Center). ◆ Unique quality of zinc oxide devices We produce zinc oxide (ZnO) devices under strict management. These devices are the heart of surge protective devices (SPDs) and are essential for lightning protection.