Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Free Shipping Over $99
Eaton / Cutler-Hammer FDB3125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
FDB3125
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FDB3125
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Eaton / Cutler-Hammer FDB3125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer FDB3125 - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3125 |
| Series | FDB |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side 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, Trip-Free Mechanism |
Quantity
Eaton / Cutler-Hammer FDB3125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3125-R |
| Series | FDB |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side 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, Trip-Free Mechanism |
Similar Items
150A 3 Pole Molded Case Circuit Breaker
100A 3 Pole Molded Case Circuit Breaker
60A 3 Pole Molded Case Circuit Breaker
Description
Built for commercial power distribution, this 125A three-pole breaker mounts into Eaton and legacy Westinghouse panelboards. The bolt-on configuration ensures a secure mechanical connection to the busbar, while load side lugs accommodate 4 to 4/0 AWG conductors. Delivering a 14kAIC rating at 480VAC, it employs a non-interchangeable trip unit for consistent performance. Facilities upgrading their infrastructure can transition to the newer PDG23F0125TFFJ model using an appropriate retrofit kit.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3125 |
| Series | FDB |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side 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, Trip-Free Mechanism |
Product FAQs
7 answersWhat wire size and conductor material do the standard lugs on the FDB3125 accept?
The standard pressure load terminals accept 4 AWG to 4/0 AWG copper or aluminum (Cu/Al) conductors.
Are both line and load lugs included with this F-frame breaker?
No. Because it is a bolt-on device designed to mount directly to a panelboard busbar, the FDB3125 is supplied with standard pressure terminals on the load end only.
Which panelboard series will accept the FDB3125 circuit breaker?
This bolt-on F-frame device is designed for use with Eaton Series C panelboards, legacy Westinghouse panelboards, motor control centers, and compatible switchboards.
What is the modern equivalent or replacement for the legacy FDB3125?
Facilities upgrading their electrical systems can transition to the newer Eaton Power Defense PDG23F0125TFFJ model by using an appropriate retrofit kit.
Is the FDB3125 suitable for protecting HVAC motor loads?
Yes. This circuit breaker is HACR rated, certifying it for use with commercial heating, air conditioning, and refrigeration equipment.
Can the FDB3125 be reverse fed in a panelboard application?
Yes. It is reverse-feed capable, allowing it to be safely backfed when configured as a main breaker or utilized in bi-directional power distribution.
Can the thermal-magnetic trip settings on the FDB3125 be modified in the field?
No. It features a non-interchangeable trip unit with fixed thermal and fixed magnetic (LI) settings, meaning the trip protection parameters cannot be adjusted.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Search
Rating
2 reviews
- BBrentVerified BuyerReviewingEaton / Cutler-Hammer FDB3060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Breaker was as expected.
Breaker was clean, you could not tell it was used.
- RFRussell F.Verified BuyerReviewingEaton / Cutler-Hammer FDB3025 - 25A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/24/26Right product, right time
This is what I needed, and I got it in time.