162.6185.4402 Circuit Protection

Fuses are designed to protect circuits from excessive current or overloading of the circuits. The 162.6185.4402 application example and its working principles are a great example of this. This device is designed to open on a short circuit condition and provides current-limiting protection.

The 162.6185.4402 is a cylindrical, time delay, current limiter fuse. It is rated for 500 volts AC or DC and has a current range of 0.3 to 6 Amps. The fuse has an Interrupting Rating IR of 63 Amps. The fuse has a time-delay feature that allows it to stay closed under normal loads while providing maximum protection from short circuit currents.

The 162.6185.4402 utilizes a single piece of stamped formed sheet metal, which coils itself in the vice like action of the fuse holder. This particular device has an internal fuse element that is made from a zinc alloy which converts the faulted current into heat and then melts the core, thereby opening the circuit. The fuse element is enclosed inside a plastic body that provides safety from any mechanical shocks and from electric arcs, which might result due to the faulted current. The fuse link also serves to restrict the melting time thus providing a time delay effect.

The 162.6185.4402 has many applications including protection of low-voltage fluorescent lamp circuits and starting part of the motor, for overload and short circuit protection, and for isolation of HVAC equipment. This particular fuse is particularly recommended for use in sensitive controlling systems such as paper pulp processing, live-wires, hospital equipment, communications systems, and portable refrigeration.

The 162.6185.4402 operates on the inverse current-limiting principle, whereby a slotted, copper fuse element is used to limit the current in an overloaded circuit by interrupting the arc between the contact points that is generated during a fault. The current-limiting principle works by limiting the current in a faulted circuit to the rated current of the fuse for a pre-specified period of time immediately after the fault occurs. This time-delay feature of the fuse protects any downstream components in the circuit from damage due to overloading.

In conclusion, the 162.6185.4402 application example and its working principles make it an important device for protecting circuits and devices from overloading and short circuits. It operates on the inverse current-limiting principle and has a time-delay feature for maximum circuitry protection. This particular device is rated for 500 volts AC or DC and is commonly used for a variety of applications such as protection of low-voltage fluorescent lamp circuits and starting part of the motor, for overload and short circuit protection, and for isolation of HVAC equipment.