The ABB SK827005 EH550 is a high-performance, molded case circuit breaker (MCCB) from ABB's well-established SACE Tmax XT series. This specific model, designated as T5X, is a 550 Ampere frame, three-pole thermal-magnetic circuit breaker designed for main circuit protection and switching in low-voltage electrical distribution systems. The "EH" in the code indicates specific tripping unit characteristics, typically a fixed thermal-magnetic release (non-adjustable).
