ABB XT4NU3250AFF000XXX Modular Circuit Breaker

ABB Tmax XT4NU3250AFF000XXX is a 250 A frame molded-case circuit breaker in the Tmax XT family, offered in 3-pole or 4-pole configurations with front-terminal connections (AFF). It is rated for 600/690 VAC at 50/60 Hz, with an 18 kA short-circuit interrupt rating. The XT4 series provides thermal-magnetic protection with fixed (TMF) or adjustable (TMA) trip units, and this model variant features front-line/load-side terminals, double insulation, and a trip range listed as 250 to 2500 A. The enclosure accommodates a compact footprint of approximately 6.3 in (H) × 4.13 in (W) × 3.25 in (D) and is UL-listed, suitable for use in industrial distribution applications requiring reliable high-current protection.