Cutler-Hammer BR330U Three-Phase Circuit Breaker

Cutler-Hammer BR330U is a three-pole circuit breaker rated for 30 A and 240 V, designed to interrupt current in three-phase electrical circuits when overloads or faults occur, thereby protecting conductors and connected equipment. The BR330U model carries a 10K interrupting capacity, indicating its ability to safely interrupt fault currents up to 10,000 amperes in compatible installations. With its three-pole configuration, this device is intended for installations that require a protective device in a 3P, 240 V environment, serving to limit fault energy and isolate faulty portions of the system to maintain electrical safety. The BR330U's ratings — 30 A, 240 V, 3P, 10K — define its role as a protective device in three-phase electrical infrastructure, commonly found in industrial and commercial settings where reliable overcurrent protection is essential. Use in accordance with applicable electrical codes and manufacturer instructions to ensure proper installation and operation.