MOELLER (EATON) PKZM0-25 + NHI-E-11-PKZ0

Moeller (Eaton) PKZM0-25 Motor Protection Circuit Breaker

Description

The Moeller PKZM0-25 is a high-performance 3-pole motor protection circuit breaker designed for reliable motor protection up to 11 kW (at 400V). It offers an adjustable thermal overload setting from 16 to 25 Amperes and provides dependable short-circuit protection. This assembly includes the NHI-E-11-PKZ0 front-mounted auxiliary contact block, which provides 1 Normally Open (NO) and 1 Normally Closed (NC) contact for external signaling and control logic. Renowned for its durability, the PKZM0-25 is an ideal choice for a wide range of industrial applications.

Specifications

• Manufacturer: Moeller (Eaton)
• Model: PKZM0-25
• Auxiliary Contact: NHI-E-11-PKZ0 (1NO + 1NC)
• Adjustable Current Range: 16 – 25 A
• Rated Operational Voltage (Ue): up to 690V AC
• Rated Ultimate Short-Circuit Breaking Capacity (Icu) at 400V: 50 kA
• Number of Poles: 3
• Trip Technology: Thermal-Magnetic

Application

This motor protection circuit breaker is suitable for protecting three-phase motors in various industrial settings, including conveyor systems, pumps, fans, and machine tools. It functions as a manual motor starter with integrated overload and short-circuit protection.

CO2 Impact

By purchasing this pre-owned unit, you are actively participating in the circular economy. You help save 16.0 kg of CO2, which is comparable to the emissions from driving a car for 80 kilometers. This choice supports sustainability in the industrial sector.

Availability

This item is a reliable, tested component from our surplus inventory. It is ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the difference between the Moeller PKZM0-25 and the Eaton PKE32?

The PKE32 is the modern successor to the PKZM0-25. It offers a higher breaking capacity, a wider range of plug-in trip modules for more flexibility, and is designed to meet the latest industrial standards. While the PKZM0-25 is a reliable obsolete part, the PKE32 is the current-generation equivalent.

How do I correctly set the thermal overload protection on the PKZM0-25?

The thermal overload setting should be matched to the motor’s full load ampere (FLA) rating, which is found on the motor’s nameplate. Use a small screwdriver to turn the dial on the front of the device to the corresponding current value within its 16-25A range.

Can I use this PKZM0-25 for single-phase motor protection?

Yes, it is possible to use a 3-pole MPCB for single-phase applications. To do this, you must wire the single-phase circuit through all three poles in series to ensure the thermal protection elements heat evenly and trip correctly. Consult the manufacturer’s documentation for the recommended wiring schematic.

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Last Update: Friday, March 13, 2026