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Eaton / Cutler-Hammer ED3125V Molded Case Circuit Breaker

  • 125A
  • 3 Pole
  • Panel Mount
Eaton / Cutler-Hammer ED3125V
Molded Case Circuit Breaker
Brand Eaton / Cutler-Hammer
SKU ED3125V
Select Item Condition
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  • 125A
  • 3 Pole
  • Panel Mount

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Eaton / Cutler-Hammer ED3125V - 125A 3 Pole Molded Case Circuit Breaker

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$913.50 In Stock

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Description

Built for high-heat industrial applications, the ED3125V is a 3-pole, 125A molded case circuit breaker designed for commercial power distribution. It features a specialized 50°C ambient calibration, making it ideal for environments where standard breakers might experience nuisance tripping. This unit mounts into Eaton Series C panelboards, switchboards, and motor control centers. Rated for 65 kAIC at 240VAC, it provides reliable thermal-magnetic protection and is reverse feed capable.

Specifications

Key specifications
Brand Eaton / Cutler-Hammer
Part Number ED3125V
Series ED
Amperage 125A
Poles 3
Mounting Style Panel Mount
Voltage 240VAC, 125VDC
Phase 3
AIC Rating 65kA @ 240VAC, 10kA @ 125VDC
Fit and installation
Frame Type ED
Terminal Type Lugs
For Use With Eaton Series C Panelboards, Switchboards, Motor Control Centers
Wire Gauge 4 AWG - 4/0 AWG (Al/Cu)
Max Wire 4/0 AWG
Min Wire 4 AWG
Protection and operation
Trip Technology Thermal Magnetic
Trip Function Code LI
Trip Function Long-Time, Instantaneous
Trip Adjustability Fixed Thermal, Fixed Magnetic
Standards and features
Available Options Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch
Accessories Load Side Lugs
Standards CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489
Approval CSA, UL
Temp Rating 50C
Construction Features HACR Rated, Reverse Feed, Non-Interchangeable Trip, 50C Ambient Calibration

Product FAQs

5 answers
What panels are compatible with the Eaton ED3125V?

The ED3125V is an F-Frame molded case circuit breaker designed specifically for Eaton Series C panelboards, switchboards, and motor control centers. It is not UL listed for use in panels from other manufacturers.

What does the V suffix mean in the ED3125V catalog number?

The V suffix indicates that the breaker features a special 50C (122F) ambient temperature calibration. Standard Eaton Series C breakers without the V suffix are calibrated for 40C (104F).

Does the ED3125V include both line and load terminals?

The standard ED3125V comes equipped with load side lugs only, as the line side is typically bolted directly to the panel bus. If your application requires no terminals or line side terminals, you would need a variant with a W (no terminals) or Y (line terminals only) suffix.

Can the ED3125V replace a standard ED3125 circuit breaker?

Yes, it shares the exact same physical F-Frame dimensions and bolt-on mounting as the standard ED3125. However, the ED3125V is calibrated for a 50C ambient temperature, which may slightly alter thermal tripping characteristics if used in a standard 40C environment.

Can I install this breaker in a GE or Siemens panel if it physically fits?

No. Even if the breaker physically fits, the ED3125V is not UL classified for use in GE, Siemens, or other competitor panels. It must be installed in an approved Eaton or Cutler-Hammer enclosure to maintain safety and compliance.

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Reviews

4.6
Rated 4.6 out of 5 stars
Based on 7 reviews
Total 5 star reviews: 6
Total 4 star reviews: 0
Total 3 star reviews: 0
Total 2 star reviews: 1
Total 1 star reviews: 0
Rating
Ratings
7 reviews
  • PS
    pam s.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer ED3100 - 100A 3 Pole Molded Case Circuit Breaker
    I do not recommend this product
    Rated 2 out of 5 stars
    7/28/26
    Shipment delays

    Asked for overnight shipment, got it but the product did not ship for 7 days

  • BF
    Bernie F.
    Verified Buyer
    Reviewing
    Eaton / Cutler-Hammer ED2200 - 200A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    7/27/26
    Very Responsive

    I ordered this breaker. It arrived on time and was exactly what I ordered.

  • BF
    Brian F.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer ED2200 - 200A 2 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    5/26/22
    In Stock & Speedy Shipping

    Always find in-stock items and shipping is always quick. My go-to for breakers at unbeatable prices.

  • LV
    Lue V.
    Flag of United States
    Reviewing
    Eaton / Cutler-Hammer ED3175 - 175A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    4/27/22
    Excellent online service

    Thanks for you online services. It was an easy transaction and delivery was right on time.

  • NM
    Nick M.
    Flag of United States
    Reviewing
    Siemens E43B030 - 30A 3 Pole Molded Case Circuit Breaker
    I recommend this product
    Rated 5 out of 5 stars
    6/23/20
    reliable breaker at a good price

    I was happy this specialty breaker was available at a good price compared to local suppliers in our area.