Bussmann 170M3741 Fuse

Bussmann 170M3741 is a high-speed semiconductor fuse designed to protect high-voltage power-electronic circuits. This 100 A, 1,250 V AC rated device from the Bussmann 170M series is a two-terminal, square-body fuse with copper end caps (CU) and an indicator option marked 1FKE/115AR, which provides a visual fault indication when the fuse clears. The voltage ratings are specified as 1,250 V AC (IEC) and 1,300 V (UL), making it suitable for HV applications that demand fast fault isolation. This variant is commonly used to guard semiconductor devices and switching elements in HV power electronics, such as power supplies, inverters, and other equipment where precise fast-acting overcurrent protection at the 100 A level is required. The 170M3741 designation identifies the specific current rating and package within Eaton Bussmann’s 170M family, ensuring compatibility with compatible holders and end-cap configurations designed for 2-pin square bodies.