TCP1.25A Telecom Circuit Protection Fuses Bussman/Eaton TCP1.25A Telecom Circuit Protection Fuses are reliable surface mount telecom circuit protection fuses that protect against power cross faults. The TCP1.25A components eliminate the need for a current limiting resistor and are RoHS compliant. Bussman/Eaton fuses protect against overcurrent conditions found in telecom Subscriber Line Interface Cards (SLICs), xDSL Modem Applications, Set-Top Boxes, and Consumer Premises Equipment (CPE).