Direct lightning strike SPD gap type LD-22G LD-25G
LD-22G Impulse current 25 kA LD-25G Impulse current 50 kA
Class 1 (JIS C 5381-11) compliant
Gas-filled gap type Integrated SPD external separator (MCCB) and SPD Designed to withstand direct lightning strikes. Protects equipment from lightning surges that enter through power supply and grounding (earth). Compliant with JIS standards. Handles the diversion components of direct lightning and is installed in distribution boards and sub-distribution boards. Manufactured by Otowa Electric Industry, a specialist in lightning protection products, including SPDs, lightning arresters (such as arresters and surge protectors), lightning surge countermeasures, and induced lightning countermeasures.
Inquire About This Product
basic information
*Features* 1. Impulse current 25kA, 50kA (10/350μs) 2. Compatible with degraded contact output 3. Mounting via DIN rail 4. Compliant with RoHS restricted substances
Price range
Delivery Time
Applications/Examples of results
【Purpose】 Protects equipment from lightning surges entering from the power supply (direct lightning strike protection). Class 1 compatible power supply SPD (surge protective device, arrester). Single-phase 2-wire, single-phase 3-wire, three-phase 3-wire, three-phase 4-wire, 1φ2W, 1φ3W, 3φ3W, 3φ4W, AC100V, AC200V, for lighting, for power.
catalog（3）
Download All Catalogs
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.
