ABB ST202M-B25 Two Channel Safety Relay Module

ABB ST202M-B25 is a two-pole miniature circuit breaker (2P MCB) rated for 25 A, designed to interrupt current in two conductors simultaneously when an overload or short circuit occurs in low-voltage distribution circuits. It uses a B-type trip curve, providing defined instantaneous tripping for moderate overcurrents and is commonly chosen for general-purpose branch circuits in typical low-voltage installations. The 2P construction ensures both poles disconnect together, preserving safety in dual-conductor configurations such as shared-neutral or two-phase circuits often found in residential and light-commercial setups. ABB's ST202M-B25 is intended for use in electrical distribution panels, switchboards, and other low-voltage protection applications, offering reliable, consistent performance within ABB's protection device lineup. This model provides a straightforward, dual-pole protection solution for circuits where simultaneous isolation of both conductors is required, aligning with standard electrical protection practices in many regions.