RJS 400-R SHORT

Specialty Fuses: RJS 400-R SHORT

The RJS 400-R is a type of specialty fuse designed to protect electronic components from power surges. This particular type of fuse is a short-circuit device that is capable of safely interrupting overload or short-circuit currents. The fuse is designed to open after a period of over-current time, providing protection for both the current and voltage circuits.

The RJS 400-R is unique in that it can detect short-circuit current and open the circuit quickly while still allowing relatively high overload currents to pass through the fuse. This makes the fuse suitable for applications where high current is necessary, such as motors, transformers, or other power-hungry devices. Additionally, the low-profile design of the RJS 400-R is conducive to tight areas, making it suitable for installation in tight spaces or in confined structures like automobiles.

Working Principle

The RJS 400-R utilizes an arc-quenching chamber and a thermal element. The thermal element is composed of a metal strip that heats up quickly when exposed to overload or short-circuit current. The arc-quenching chamber provides a controlled path for the arc that is created when the fuse opens. This arc quickly cools and the thermal element is able to reset, thus allowing the circuit to be re-loaded without having to manually replace the fuse.

The fuse also has a time-delay characteristic. When an overload or short-circuit current is detected, the metal strip of the thermal element will heat up but it will reset after a short period of time. This ensures that the fuse will stay in place to protect the circuit, even if the overload or short-circuit conditions are only momentary.

The RJS 400-R is a reliable and efficient fuse that uses a combination of thermal properties and an arc-quenching chamber to protect circuits from currents that exceed the fuse’s rating. It is designed for tight spaces and high current applications, making it one of the most versatile and reliable specialty fuses on the market.