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Eaton / Cutler-Hammer ED3125L Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
ED3125L
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
ED3125L
Quantity
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Eaton / Cutler-Hammer ED3125L - 125A 3 Pole Molded Case Circuit Breaker
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Description
Functioning as a unit-mount breaker, the ED3125L is a 125A, 3-pole device from Eaton's Series C family. This F-Frame MCCB provides fixed thermal-magnetic protection for industrial applications. This model includes both line and load lugs for versatile feed-thru wiring. It mounts into Series C switchboards and replaces FD3125L or HFD3125L breakers. Delivering a 65 kAIC capacity at 240V, it ensures reliable fault clearing. The breaker is HACR rated and supports reverse feed capability.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | ED3125L |
| Series | ED |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 125VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 10kA @ 125VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 4/0 AWG (Cu/Al) |
| Max Wire | 4/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
8 answersWhat does the L suffix in the ED3125L catalog number indicate?
The L suffix designates that the circuit breaker is supplied with both line and load side lug terminals installed from the factory.
Can the ED3125L be reverse fed in a panelboard?
Yes, this F-frame circuit breaker is suitable for reverse feed applications, allowing it to be used as a main breaker or back-fed branch breaker.
Is the ED3125L HACR rated for HVAC applications?
Yes, Eaton Series C F-frame circuit breakers are HACR rated, making them suitable for heating, air conditioning, and refrigeration equipment branch circuit protection.
What is the modern Eaton replacement for the legacy Series C ED3125L?
The Eaton Power Defense PDG2 series is the current generation replacement for legacy Series C F-frame breakers. Upgrading to the PDG2 series in an existing enclosure typically requires a retrofit kit.
How is the ED3125L installed in a panel?
This is a unit-mount, or bolt-on, circuit breaker. It does not snap onto a DIN rail or plug into a bus; it must be bolted directly to the mounting pan or busbars in compatible Eaton switchboards and panelboards.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, the ED3125L features a non-interchangeable trip unit with fixed long-time (thermal) and fixed instantaneous (magnetic) trip functions.
Can I use aluminum wire with the factory lugs on the ED3125L?
Yes, the standard line and load lugs are dual-rated for both copper (Cu) and aluminum (Al) conductors ranging from 4 AWG to 4/0 AWG.
Does this breaker provide ground fault or arc fault protection?
No, the ED3125L is a standard thermal-magnetic circuit breaker. It provides overload and short-circuit protection but does not include GFCI or AFCI circuitry.
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Reviews
Review summary
Customers rate this product 4.6 out of 5 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
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Rating
7 reviews
- PSpam s.Verified BuyerReviewingEaton / Cutler-Hammer ED3100 - 100A 3 Pole Molded Case Circuit BreakerI do not recommend this productRated 2 out of 5 stars7/28/26Shipment delays
Asked for overnight shipment, got it but the product did not ship for 7 days
- BFBernie F.Verified BuyerReviewingEaton / Cutler-Hammer ED2200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/26Very Responsive
I ordered this breaker. It arrived on time and was exactly what I ordered.
- BFBrian F.ReviewingEaton / Cutler-Hammer ED2200 - 200A 2 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars5/26/22In Stock & Speedy Shipping
Always find in-stock items and shipping is always quick. My go-to for breakers at unbeatable prices.
- LVLue V.ReviewingEaton / Cutler-Hammer ED3175 - 175A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/27/22Excellent online service
Thanks for you online services. It was an easy transaction and delivery was right on time.
- NMNick M.ReviewingSiemens E43B030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/23/20reliable breaker at a good price
I was happy this specialty breaker was available at a good price compared to local suppliers in our area.