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Eaton / Cutler-Hammer MCP431550R Motor Circuit Protector

  • 150A
  • 3 Pole
  • Unit Mount
Eaton / Cutler-Hammer MCP431550R
Motor Circuit Protector
Brand Eaton / Cutler-Hammer
SKU MCP431550R
Select Item Condition
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  • 150A
  • 3 Pole
  • Unit Mount

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Eaton / Cutler-Hammer MCP431550R - 150A 3 Pole Motor Circuit Protector

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$971.54 In Stock

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Description

Built for demanding industrial environments, the Eaton MCP431550R is a 150A, 3-pole motor circuit protector from the Series C HMCP frame group. It provides dedicated instantaneous overcurrent protection when paired with external motor overload relays. Designed to fit Eaton and Westinghouse Motor Control Centers as well as Freedom Series starters, this unit mount device features an adjustable magnetic trip range of 450-1550A. It is officially replaced by the newer HMCP150T4 model.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number MCP431550R
Series MCP
Amperage 150A
Poles 3
Mounting Style Unit Mount
Voltage 600VAC, 250VDC
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC
Electrical ratings
Amperage Range 150A
Fit and installation
Frame Type MCP
Terminal Type Lugs
For Use With Eaton / Westinghouse Motor Control Centers, Freedom Series Starters
Wire Gauge 4 AWG - 4/0 AWG (Cu/Al)
Max Wire 4/0 AWG
Min Wire 4 AWG
Protection and operation
Trip Technology Magnetic Only
Trip Function Code I
Trip Function Instantaneous Only
Trip Adjustability Adjustable Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Lugs Included
Standards CSA C22.2 No. 5.1, IEC 60947-2, UL 489
Approval CE, CSA, UL, UR
Temp Rating 40C

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Reviews

5.0
Rated 5.0 out of 5 stars
Based on 2 reviews
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
Rating
Ratings
2 reviews
  • RB
    Robert B.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer MCP0358R - 7A 3 Pole Motor Circuit Protector
    I recommend this product
    Rated 5 out of 5 stars
    7/29/25
    Excellent service

    The breaker was the exact fit. The old would trip when it was put under load. Now it’s back to normal.

  • JD
    Jeryl D.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer MCP13300R - 30A 3 Pole Motor Circuit Protector
    I recommend this product
    Rated 5 out of 5 stars
    7/28/25
    Eaton Breaker

    Ordered and received the eaton breakerin great condition

    works great