The Eaton PKZM0-4 motor protection circuit breaker, often identified by the part number PKZM0-4 (order number 278476), provides robust overload and short-circuit protection for electric motors. This 3-pole device is designed for motors with a current range of 2.5 to 4 Amperes and features reliable screw terminals for secure connections. It boasts a high rated short-circuit breaking capacity of 150 kA at 400 V, making it suitable for demanding industrial environments. The unit is built for snap-on mounting and offers an IP20 degree of protection.