Allen-Bradley 1492-SPM3D010 Supplementary Protector

Allen-Bradley 1492-SPM3D010 is a three-pole supplementary protector (MCB) in Rockwell Automation’s 1492-SPM family, rated at 1 A with a Trip Curve D and no neutral connection. This Bulletin 1492-SPM device is designed to provide current-limiting protection in electrical equipment by interrupting three-phase power when overloads or short circuits occur, helping safeguard downstream circuitry. The model designation 1492-SPM3D010 identifies three poles (3P), a 1 A rating (010), a D-trip characteristic, and the absence of a neutral connection. As part of the 1492-SPM line, it complements primary protection devices in equipment where supplementary protection is required, and it is commonly used in industrial control applications and other machinery that rely on compact, three-phase protection for low-voltage circuits.