1SDA100344R1

The ABB 1SDA100344R1 is a SACE Tmax XT5N 400 moulded case circuit breaker (MCCB) designed for reliable protection, switching, and isolation in low-voltage electrical distribution systems. It is a three-pole (3P), fixed-version circuit breaker with front terminals and a TMA thermomagnetic release. The breaker has a 320 A rated current within a 400 A frame, making it suitable for protecting three-phase electrical circuits against overload and short-circuit conditions. The TMA release combines thermal overload protection and magnetic short-circuit protection.