Square D-brand I-Line circuit breaker power distribution panelboards are for use on AC or DC systems. The panels, labeled cULus (compliance to UL and CSA standards certified by UL) are also Underwriters Laboratories (UL) Listed under File E33139. The following are suitable for use as service entrance equipment such as all main circuit breaker panelboards. I-Line circuit breaker panelboards are available as 4001200 A main lugs only and 1001200 A main circuit breakers. I-Line circuit breaker panelboards are designed, manufactured, and tested to comply to UL, CSA, NFPA, NEMA & W-P standards. This Square D, circuit breaker is a 3P breaker with a rated current of 250A. This product has a breakning capacity of 36kA@240/415VAC. This breaker has a thermal-magnetic trip unit trechnology. This product complys to IEC & UL listed standards. With a magnetic hold current of 1250A and a magnetic tripping current of 2500A. Dimensions for this product are 12.6 in (H), 12.5 in (W), 19.9 in (D).