PC-Tron® Circuit Board Fuses Cooper / Bussman PC-Tron® Circuit Board Fuses are radial-leaded, fast-acting, thru-hole, fuses ideal for high-voltage DC applications. PC-Tron fuses are board washable and have an optional mounting socket available. Cooper / Bussman PC-Tron Circuit Board Fuses are available in different lead configurations and feature a 125VAC to 250VAC voltage range, 450VDC maximum rating, and are UL recognized.