Cutler-Hammer SPHM1RM0004 is a DIN rail-mounted circuit breaker rated at 4 A in a 1-pole, 1-phase configuration. It is designed for use with line voltages from 230-400 VAC. The SPHM1RM0004 part number uniquely identifies this 4 A, 1P, 1Φ device from Cutler-Hammer.
