Eaton HMCP100R2C Cutler-Hammer HMCP Series Thermal Magnetic Circuit Breakers

The Eaton HMCP100R2C (also marketed under the Cutler-Hammer brand) is a 100A, 2-pole magnetic-only circuit protector from Eaton's HMCP Series, designed specifically for motor circuit and short-circuit protection in industrial applications.

Key Specifications:

Type: Magnetic-only molded case protector (MCCP)

Current Rating: 100A

Poles: 2P (2-phase)

Voltage Rating:

480V AC (standard)

600V AC (verify specific model rating)

Interrupting Capacity: 65kA @ 480V AC

Trip Type: Instantaneous magnetic trip only (no thermal protection)

Standards: UL 489, CSA

Critical Features:

Motor Circuit Protection:

Provides instantaneous short-circuit protection

Must be used with separate overload relay (e.g., Eaton EOCR)

Designed to handle motor inrush currents

Industrial Design:

Heavy-duty construction for harsh environments

High interrupting capacity for industrial applications

Mounting & Compatibility:

Fixed or plug-in mounting options

Compatible with Eaton C-Series and Pow-R-Line panels

Comparison with Similar Models:

Model Poles Protection Type Overload Protection Best For

HMCP100R2C 2P Magnetic-only External required 2-phase motor circuits

HMCP100R3C 3P Thermal-magnetic Built-in 3-phase motors

HMCP100H3C 3P Magnetic-only External required Heavy-duty 3-phase motors

Installation Notes:

Must be used with properly sized overload relay

Suitable for use in motor circuits per NEC Article 430

Not recommended for general circuit protection

Available with optional accessories (shunt trips, auxiliary switches)

Typical Applications:

Two-phase motor protection

Industrial equipment with 2-phase power

Specialized applications requiring 2-pole protection

Ordering Information:

Current Catalog Number: HMCP100R2C

Replacement: Still in production (verify with Eaton)

Cross Reference: Cutler-Hammer HMCP100R2C