170M1558D

170M1558D is one of the top-selling specialty fuses in the electrical market. It is designed specifically for industrial applications such as motor control, heating and air conditioning equipment, and short-circuit protection. The fuse carries a rating of 200A at 600VAC and is UL listed. The fuse also carries a UL recognized \'low break\' capability, which allows it to provide superior short-circuit protection.

When a short circuit occurs, the 170M1558D quickly senses the increase in current. This is known as the “clearing current”, or the current at which the fuse activates its breaking function. This current is normally 5-7 times higher than the normal operational current of the circuit. Once activated, the fuse mechanism rapidly opens the circuit, limiting the amount of energy that passes through.

This action not only prevents further damage to connected components, but also limits the amount of heat that radiates during the short circuit event. This helps to keep critical equipment safe, while reducing the need for emergency maintenance activities. The 170M1558D has earned its UL listing due to its high short-circuit interruption capacity and extraordinary physical strength.

The 170M1558D is designed with a special floating-type element. This design allows the fuse to float off the circuit board during an overload or short-circuit event. Because of this, the fuse is able to interrupt current without the risk of arcing and destroying the circuit board.

The internal fuse element is made from a high temperature copper and brass alloy, allowing for superior current conductance and exceptional thermal shock resistance. Its floating element is designed to separate from the base of the fuse before it reaches melting temperature, further ensuring the safety of the circuit. The endcaps of the fuse are selected for their highest performing characteristics in order to withstand high pressures and stay securely in place.

The 170M1558D has a wide operating range from 32°F to 149°F (-20°C to 65°C) and comes with an audible warning signal, letting operators know when a short-circuit occurs. This fuse also holds a variety of UL marked UL, CSA, and VDE certifications that make it easier to select for international applications. With its versatility and exceptional performance, the 170M1558D is ideal for use in motor control, heating and air conditioning equipment, and short-circuit protection.