ABB SU203M DIN Rail Mounted Molded Case Circuit Breaker

ABB SU203M is a three-pole, DIN-rail-mounted molded case circuit breaker rated at 6 A for three-phase protection, suitable for circuits up to 480Y/277 V AC. It is UL489-listed and provides a per-pole short-circuit current rating up to 10 kA, making it appropriate for industrial control panels and distribution blocks where reliable overcurrent protection is required in a compact DIN-rail form factor. The SU203M-Z6 variant confirms a 6 A, 3P device with 480/277 VAC operation, intended for panel-mount protection of 3-phase loads such as motors, drives, and automation circuits. As a DIN-rail mounted molded case breaker, it integrates into standard industrial enclosures alongside other SU200M modular breakers, enabling quick installation and straightforward expansion of protection schemes for systems operating at voltages up to 480 VAC.