Eaton 250A British Standard Fuse FM 690V AC High Rupture Capacity Fast Acting Offset Tag 85 mm 250FM

Eaton 250FM British Standard Fuse FM 690V AC is a high-quality fast-acting fuse designed for industrial and electrical applications where reliable circuit protection is critical. Rated at 250 amperes and suitable for voltages up to 690 volts AC, this fuse provides excellent protection for power inverters, converters, and semiconductor devices commonly found in manufacturing and automation environments.

The fuse's FM size designation alongside its offset bolted tags ensures easy mounting and secure connection in a variety of industrial distribution panels and fuse holders. Its FF (very fast acting) speed classification means the fuse reacts rapidly to short circuits, minimizing potential damage to electrical components.

This compliance guarantees industrial reliability and safety standards are met for wide-ranging electrical installations.

Compact yet powerful, the fuse's dimensions (38 mm diameter, 50 mm length, 41 mm height, and overall length of 113 mm) offer a design that reduces power loss and heat generation, enhancing circuit efficiency and lifespan. Its high rupture capacity rating allows it to interrupt fault currents well beyond normal operating currents, ensuring robust protection even under extreme fault conditions.

This fuse is also designed to protect semiconductor equipment such as rectifiers and starter motors with reduced voltage startup, classified as aR type suitable for these specific uses. The Eaton Bussmann Series bolted tag fuse is widely used as a safety measure in industrial electrical systems to act as the weak link that breaks safely under fault conditions, protecting the larger system.

This fuse features compact dimensions and offset tags for secure and compatible installation in industrial panels. Fast acting FF speed for immediate circuit interruption in short-circuit events. High rupture capacity ensures safe disconnection under high fault currents.

Conforms to IEC 60269-4 and other global safety and performance standards. Suitable for semiconductor protection and reduced voltage motor starters. Robust construction minimizes heat loss and electrical power wastage. Ideal for industrial automation, manufacturing, and electrical distribution applications.

Overall length 113 mm with 85 mm fixing centres for versatile mounting. Explore more products in the Fuse category at EnvMart for comprehensive electrical protection solutions by Eaton and other leading brands.