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Eaton / Cutler-Hammer MCP431800R - 150A 3 Pole Motor Circuit Protector

Brand Eaton / Cutler-Hammer
SKU MCP431800R

Eaton / Cutler-Hammer MCP431800R - 150A 3 Pole Motor Circuit Protector

Brand Eaton / Cutler-Hammer
SKU MCP431800R
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Eaton / Cutler-Hammer MCP431800R - 150A 3 Pole Motor Circuit Protector

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$883.64 No stock

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DescriptionSpecificationsSuperClubWarranties
Description
Built for heavy-duty motor applications, the MCP431800R is a 150-amp, 3-pole motor circuit protector from Eaton's Series C lineup. It delivers instantaneous magnetic-only protection with an adjustable trip setting between 575A and 1800A, allowing for exact coordination with motor inrush currents. Designed to integrate with Size 4 combination motor starters, this 600VAC-rated unit is an exact fit for existing setups. For new designs, it has been replaced by the HMCP150U4C.

Specifications

Brand Eaton / Cutler-Hammer
Series MCP
Part Number MCP431800R
Amperage 150A
Amperage Range 150A
Voltage 600VAC, 250VDC
Poles 3
Phase 3
AIC Rating 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC
Mounting Style Unit Mount
Terminal Type Lugs
For Use With Eaton / Westinghouse Combination Motor Starters (Size 4), Motor Control Centers
Trip Technology Magnetic Only
Trip Function Code I
Trip Function Instantaneous Only
Trip Adjustability Adjustable Magnetic
Wire Gauge 4 AWG - 4/0 AWG (Cu/Al)
Max Wire 4/0 AWG
Min Wire 4 AWG
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Handle Lock
Accessories Standard Aluminum Terminals
Standards CSA C22.2 No. 5.1, IEC 60947-2, UL 489
Approval CE, CSA, UL, UR
Temp Rating 40C
Construction Features Motor Circuit Protector

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Warranties

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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
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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.

    Was this helpful?
  • 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

    Was this helpful?

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