Cutler-Hammer EHD3040L Industrial Circuit Breaker

Cutler-Hammer EHD3040L is an industrial, three-pole circuit breaker rated for 40 A at 480 V, designed to protect 3‑phase electrical circuits in demanding environments. The EHD3040L carries a 14K interrupting rating, indicating its ability to interrupt fault currents up to 14 kiloamperes, a key specification for safety and equipment protection in industrial power systems. As part of the Cutler-Hammer EHD family, this model supports 3‑phase, 480 V operation and is selected when reliable overcurrent protection is required in industrial installations. With a 40 A, 480 V, 3P configuration, the EHD3040L provides robust circuit protection for industrial electrical feeders and loads within its rated voltage and current, matching applications that require a standard 3‑pole protection device. In practice, a 40 A, 480 V, 3‑pole breaker like the EHD3040L is used to provide overcurrent protection for 3‑phase circuits at industrial power levels, helping to limit fault energy and enable safe shutdown when protection trips occur.