The PF-MB1-125 is a POWrFuse™ semiconductor class aR power fuse designed to UL 248-13 standard with a rated current of 125 A and voltage rating of 240 VAC / 150 VDC. It features a traditional round body bolted style package with an interrupting rating of 160 kA at 240 VAC and 50 kA at 150 VDC, providing robust protection for semiconductor circuits. The fuse has a nominal resistance of 0.0006 O, nominal I²t of 10077 A²s, and power loss of 22 W at 100% rated current, with an operating temperature range of -55°C to +125°C. It is RoHS compliant and halogen-free, with cULus agency recognition (E500949), making it suitable for industrial power distribution, semiconductor protection, and high-current circuit applications requiring reliable overcurrent protection.