MF-RX375/72-0 is a PTC resettable fuse designed for low-voltage power supply protection up to 72 V maximum. This radial leaded device features a hold current (Ihold) of 3.75 A and a trip current (Itrip) of 7.50 A, with an initial resistance of 0.03 O at 23 °C. The device is constructed with cured, flame-retardant epoxy polymer insulating material meeting UL 94 V-0 requirements and is RoHS compliant and halogen-free. It operates reliably across a temperature range of -40 °C to +85 °C with a maximum device surface temperature of 125 °C in the tripped state. Common applications include security and fire alarm systems, loudspeakers, and power transformers where automatic circuit protection and resettability are required.