ABB SU202M-K40 Industrial Safety Relay Module

ABB SU202M-K40 is a two-pole (2P) miniature circuit breaker (MCB) in the SU200M family, engineered for branch-circuit protection in industrial panels and equipment, UL489-listed to meet standard requirements for overcurrent and short-circuit protection, and suitable for distribution panels and machinery control circuits. The device is rated for 40 A nominal current and employs a K-characteristic trip curve, delivering faster response to overloads than B- or C-characteristic devices and enabling coordinated protection within multi-device assemblies. It provides a 10 kA short-circuit breaking capacity, allowing safe interruption of high fault currents, which is critical in machines and control circuits where quick disconnection reduces risk and damage. Common applications include motor feeders, control cabinets, and other industrial branch circuits where ABB SU-series protection is specified, making the SU202M-K40 a practical choice for reliable, UL489-compliant protection in 40 A, 2P configurations.