ABB SU202M-K40 Molded Case Circuit Breaker

The ABB SU202M-K40 is a two-pole molded case circuit breaker (MCCB) rated for 40 A at 240 V AC, designed for System pro M compact panel installations and other ABB distribution enclosures. It delivers a 10 kA interrupting rating (UL489) for short-circuit protection and uses a K-characteristic (K-curve) trip profile for inverse-time response to faults. This device is intended for branch‑circuit protection in commercial and light‑industrial electrical distributions, compatible with 2P configurations and 240 V systems up to 40 A. Typical applications include protecting feeders and branch circuits inside electrical panels, switchboards, and distribution boards where 40 A, 240 V AC protection and a 10 kA interrupting capability are required.