Description
The Cutler Hammer-Eaton PKZM0-0.63 is a compact, 3-pole motor circuit breaker engineered to provide reliable short-circuit and overload protection for small motors and motor branch circuits. Designed for use in industrial and commercial control panels, this device combines the functions of a motor starter overload relay and a circuit breaker into a single, space-saving unit.
Key Features
- Current setting range: 0.4–0.63 A, ideal for protecting small fractional-horsepower motors
- 3-pole design ensures balanced protection across all phases
- Combines short-circuit protection and adjustable thermal overload protection in one device
- Manual ON/OFF switching capability for local motor isolation
- Compact PKZM0 frame size fits standard DIN rail or panel mounting
- Trip-free mechanism prevents reset while fault condition persists
- Compatible with Eaton PKZM0 series accessories including auxiliary contacts, shunt trips, and undervoltage releases
Applications
- Motor branch circuit protection in HVAC control panels
- Small pump and fan motor protection
- Industrial and commercial motor control centers (MCCs)
- OEM machine building and panel assembly
Why Choose the PKZM0-0.63?
The PKZM0 series from Cutler Hammer-Eaton is a globally recognized platform trusted by panel builders and HVAC professionals for its reliability and modular expandability. The PKZM0-0.63 eliminates the need for separate fusing and overload relays, reducing panel footprint and simplifying wiring. Its adjustable current dial allows precise calibration to the motor’s full-load amperage, minimizing nuisance trips while maximizing motor longevity.
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