CUTLER-HAMMER HMCPS050K2C Instantaneous Motor Circuit Protector

Overview

CUTLER-HAMMER HMCPS050K2C is a Series C feed-thru type three-pole instantaneous magnetic-only motor circuit protector from Eaton Cutler-Hammer HMCP family. CUTLER-HAMMER HMCPS050K2C is dedicated to short-circuit protection for motor branch circuits, and must be used together with an external thermal overload relay to provide complete motor overload protection. This CUTLER-HAMMER HMCPS050K2C is widely stocked as spare short-circuit protection unit for NEMA motor control assemblies.

Features

CUTLER-HAMMER HMCPS050K2C adopts feed-thru terminal layout, 50A rated current with adjustable instantaneous magnetic trip. It only reacts to short-circuit current surge and does not contain thermal bimetallic element for overload tripping. HMCPS050K2C supports high interrupting capacity for motor starter combinations, compatible with Freedom MCC bucket and standard NEMA starter layouts. It can be fitted with optional auxiliary contact and alarm contact accessories, sending trip status signal to PLC or control panel. This unit follows UL489 and CSA standards, designed for 24/7 continuous operation on industrial motor control centers, pumps, fans, compressors and packaging machine starter cabinets. It is available as maintenance spare part for legacy Cutler-Hammer motor control systems.

Specifications

CUTLER-HAMMER HMCPS050K2C Motor Circuit Protector Brand: CUTLER-HAMMER Eaton Model: HMCPS050K2C Series: Series C HMCP Type: feed-thru instantaneous magnetic motor circuit protector Pole: 3 poles Rated current In: 50 A Rated voltage: 600 VAC, 250 VDC Trip principle: magnetic instantaneous only, no thermal element Connection style: feed-thru terminal Frame: F frame Certification: UL489, CSA, CE Mounting: panel mount inside MCC bucket Protection class: IP20 Ambient temperature: -25℃ ~ +60℃ Status: legacy Cutler-Hammer MCP spare

Principle

CUTLER-HAMMER HMCPS050K2C monitors three-phase motor current. This Instantaneous Motor Circuit Protector uses internal magnetic solenoid to detect rapid short-circuit current rise. It trips instantly once the current exceeds preset magnetic threshold and isolates fault circuit. Overload protection function is handled by separate external overload relay to form a full motor protection combination.

Applications

CUTLER-HAMMER HMCPS050K2C is deployed in NEMA motor control centers, water treatment pumps, HVAC fans, compressors and conveyor motor starter branches. It provides fast short-circuit fault isolation for motor combination starters. CUTLER-HAMMER HMCPS050K2C is stocked as spare motor circuit protector for legacy Freedom motor control assemblies.