Allen-Bradley 1492-SPM1D050 Supplementary Protector

The Allen-Bradley 1492-SPM1D050 Supplementary Protector is a 1-pole AC miniature circuit breaker from the 1492-SPM family, providing supplementary overcurrent protection for control circuits with a 5 A continuous rating. It uses a Trip Curve D characteristic to respond to higher fault currents typical of inductive loads, while remaining suitable for general applications within its rating. This variant is specified without a neutral terminal (No Neutral) and is intended for 1-pole configurations; it is commonly used in industrial automation panels to provide additional protection alongside main breakers or fuses. As part of the 1492-SPM lineup, it offers current-limiting protection and straightforward wiring options for compact protection in space-constrained control assemblies.