S202MUC-Z15 — 15 A, Curve Z, 2-Pole MCB
The ABB S202MUC-Z15 is a 2-pole miniature circuit breaker from the S200MUC series, rated 15 A with a Trip Curve Z characteristic. It mounts on a standard DIN rail and is designed for branch-circuit protection in control panels and distribution boards. Curve Z trips between 2 and 3 times rated current, making it a good fit for protecting sensitive electronic loads — PLC power supplies, instrumentation loops, or DC drives — where a standard B or C curve might nuisance-trip on inrush. Rated for 277 V AC and 500 V DC, with interrupting capacities of 6 kA (AC) and 10 kA (DC). That DC rating is notably high for a 2-pole MCB this size — useful in battery-backed or solar-string circuits where DC fault currents are higher than the AC equivalent.