Eaton Cutler-Hammer Electrical Control Brand Unit

Module Feature

Cutler-Hammer is a well-established American electrical brand acquired by Eaton in 1978.

Its product portfolio covers molded case breakers, air circuit breakers, motor management starters, contactors, overload relays, automatic transfer switches and associated protection accessories. Products follow ANSI standards and are widely used in factory control cabinets, water treatment plants, mining facilities and commercial building power distribution systems. Many legacy Cutler-Hammer devices are still operating in old panels and require spare parts replacement.

Working principle

Different product categories adopt corresponding working principles.

Breakers rely on thermal and magnetic trip elements for fault isolation. Motor starters combine contactors and overload relays to realize motor start-stop and fault protection. Transfer switches monitor source voltage and switch power supply automatically during mains failure.

Onboard components

Components vary by product type, including contact assemblies, arc chutes, trip units, protection microprocessors, auxiliary contacts and power terminals.

LED indicators

Indicator configuration depends on specific model; intelligent relays and transfer switches have local LED or HMI status indication.

Hardware self‑diagnosis

Smart electronic protection devices support continuous self-check for circuit faults, hardware errors and communication failures. Electromechanical devices rely on external protection circuits for fault detection.

Programming software

Eaton EnerVista Software, used for relay parameter setting, protection configuration and fault record review for digital Cutler-Hammer devices.

Electrical & Process Parameters

Brand: Cutler-Hammer (Eaton) Product range: Low & medium voltage distribution, motor control and transfer switching Function: Power switching, overcurrent, ground fault and motor thermal protection

Mechanical & Structure

Mounting: Panel mounting, DIN rail or switchgear compartment installation

Protection class:IP20 general indoor type

Housing:Flame retardant plastic or metal enclosure

Environmental

Operating temperature:-25℃ ~ +70℃

Storage temperature:-40℃ ~ +85℃

Ambient humidity:5~95% non‑condensing

Certification:UL, CSA, CE

Status:Original Eaton legacy electrical spare brand

Installation

Mount devices in control panels or switchgear.

Wire primary power, CT, control and communication cables following wiring diagrams. Set protection parameters and test tripping logic before energizing.

Interface

Main power terminals, control auxiliary terminals, digital I/O and communication ports (model dependent).

Diagnostic

Breaker trip: Overload, short circuit or ground fault downstream.

Motor starter alarm: Motor jam, phase unbalance or over-temperature.

Transfer switch failure: Loss of control power or faulty sensing circuit.

Product Brief

Eaton Cutler-Hammer legacy electrical brand, offering breakers, motor starters and transfer switches for industrial and commercial power control cabinet maintenance.