0451.400MRSN

0451.400MRSN Fuse

The 0451.400MRSN from Mersen is a fuse designed for electric protection. It is available in the standard American size metal cartridge, with a current rating of 6 amps, 250 volts AC, and a class H & J time-delay. This versatile fuse is ideal for a range of applications such as safety circuits, motor starters, transformers, capacitor banks, and air conditioner compressors.

Application Field

The 0451.400MRSN is best suited for applications requiring a short-circuit protection, such as motor controllers in industrial automation, switchboards, and control circuits. It is also frequently used in consumer appliances, HVAC systems, lighting and ballast circuits, solar equipment, and power distribution systems. The fuse is also available in 10A, 15A, 20A, and 30A versions.

Working Principle

The 0451.400MRSN fuse is a thermal-magnetic type of protection device. It operates on the principle of overcurrent and overload protection. When too much current passes through the fuse the internal resistances create heat and cause the fuse element to melt, disconnecting the circuit and setting off an alarm or any other protective measures. The time-delay feature of the 0451.400MRSN allows for in-rush current of motors and transformers, allowing them to start without triping the fuse.