KLM-3/4

Electrical specialty fuses are an important component of any power system. The most common type of electrical fuse is the KLM-3/4. This fuse is designed for low-current applications and is used to protect electronic circuits from over-current surges and pulses.

The KLM-3/4 is a two-level fuse with three main sections: the first section is the contactor, which is a metal contactor that the fuse has protecting against over-current. The contactor will push the fuse into a closed or open state depending on the current being passed through. The second section is the shunt, which is the bridge connecting the contactor to the test terminal. The shunt is used for measuring and controlling the current flowing through the circuit.

The third section is the box, which is the base of the fuse that the contactor and shunt are mounted to. The box holds the entire unit together and also provides a connection point for the incoming and outgoing wires.

KLM-3/4 fuses are designed to be used in low-power circuits only. They are rated for currents up to 16A and voltages up to 36V. This makes them suitable for use in low-current devices, such as computer peripherals, small motors, lights, and other small devices that need protection from over-current.

The working principle of the KLM-3/4 fuse is simple. When a current more than the fuse\'s rated current flows through it, the contactor opens, and the current is cut off. This prevents any further over-current from damaging the device or circuit. The opening of the contactor also triggers an alarm in devices that have them, alerting the user of the over-current situation.

The KLM-3/4 fuse is a reliable, economical solution for protecting low-current devices and circuits from damage due to over-current. It is also easy to install and use, making it a popular choice for many applications.