EATON PKZM01-2.5 Motor Protection Circuit Breaker, 2.5 A, 3-Pole, Push-Button, 0.75 kW 278481

The EATON PKZM01-2.5 is a compact motor protection circuit breaker that combines thermal and magnetic tripping to safeguard motors against overload and short-circuit conditions. Its push-button actuation and DIN rail mounting make it a practical choice for machine builders and panel builders who need reliable protection without complex setup.

Highlights

• Rated operational current: 2.5 A
• Overload release setting range: 1.6 - 2.5 A
• Rated operational power at 400 V AC-3: 0.75 kW
• 3-pole design with screw terminals
• Push-button ON/OFF actuation
• Mounts on 35 mm DIN rail or by screw fixing

In daily use

Set the overload release to match your motor's full-load current, then use the push buttons to switch the circuit. The thermal-magnetic tripping characteristic provides both time-delayed overload protection and instantaneous short-circuit protection, helping to prevent motor damage and downtime.

Full specifications

• Rated operational current (Ie): 2.5 A
• Overload release setting range: 1.6 - 2.5 A
• Rated operational power (AC-3, 400 V): 0.75 kW
• Rated operational voltage (Ue): up to 690 V AC
• Rated impulse withstand voltage (Uimp): 6 kV
• Short-circuit breaking capacity (Icu at 400 V): 50 kA
• Number of poles: 3
• Actuator type: push-button
• Mounting type: DIN rail (35 mm) / screw fixing
• Degree of protection: IP20
• Terminal type: screw terminals
• Ambient operating temperature: -25 to +55 °C
• Tripping characteristic: thermal-magnetic
• Frame size: PKZM01

Final note

The PKZM01-2.5 is a straightforward motor protection solution for small three-phase motors up to 0.75 kW, with a wide setting range and robust short-circuit capacity.