Allen-Bradley 1492-SPM2B040 is a 2-pole supplementary protector in Rockwell Automation’s 1492-SPM family, rated for 4 A (In) with Trip Curve B. It provides auxiliary overcurrent protection for downstream circuits in electrical panels when coordinated with a main protective device. The 1492-SPM2B040’s two-pole configuration and 4 A rating make it suitable for compact protection in industrial automation installations requiring reliable short-circuit protection for controlled loads.
