ABB XT1SU3020AFF000XXX Miniature Circuit Breaker

ABB XT1SU3020AFF000XXX is a 3-pole Tmax XT molded‑case circuit breaker rated for 20 A, featuring a thermal‑magnetic trip (TMF) and a 22 kA interrupting capacity at 600 V. It belongs to the XT1 frame family (125 A frame) and is designed for reliable overcurrent protection in 3-phase low‑voltage distribution panels across industrial and commercial installations. The device supports 600Y/347 VAC configurations and is commonly used to protect feeders, motors, and branch circuits where fast, predictable tripping and solid fault‑current protection are required; its 22 kAIC rating at 600 V helps ensure safe operation in higher fault scenarios. The XT1SU3020AFF000XXX variant is listed in ABB’s Tmax XT catalog as an alternate catalog number, reflecting its place in ABB’s global protective‑device lineup and its availability through major distributors. With a compact three‑pole construction and alignment for 50/60 Hz power systems, this breaker delivers dependable performance in demanding electrical environments consistent with ABB’s Tmax XT product standards.