Eaton / Cutler-HammerFS360150A
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Eaton / Cutler-Hammer FS340125B Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
FS340125B
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FS340125B
Quantity
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Eaton / Cutler-Hammer FS340125B - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer FS340125B - 125A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS340125B |
| Series | FS |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FS |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4-4/0 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, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Quantity
Eaton / Cutler-Hammer FS340125B - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS340125B |
| Series | FS |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FS |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4-4/0 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, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
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Description
Built for demanding industrial environments, this 125A molded case circuit breaker features a factory-sealed, non-interchangeable trip unit. The thermal-magnetic mechanism delivers precise overcurrent response. Featuring a unit mount design, it integrates into Eaton Series C panelboards and switchboards. It also functions as an exact substitute for the discontinued FDB3125 model. Standard line and load lugs accept 4 to 4/0 AWG copper or aluminum wiring.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FS340125B |
| Series | FS |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 22kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | FS |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4-4/0 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, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
8 answersCan the FS340125B replace an older FDB3125 breaker?
Yes, the FS340125B is an exact substitute for the discontinued FDB3125. It shares the same F-frame footprint, 125A rating, and 3-pole configuration for seamless retrofitting.
Is the thermal-magnetic trip unit on the FS340125B adjustable?
No, this breaker features a factory-sealed, non-interchangeable trip unit. Both the long-time and instantaneous (LI) trip functions are fixed.
What wire gauge is required for the lugs on this breaker?
The standard line and load lugs are rated to accept 4 AWG to 4/0 AWG copper or aluminum (Cu/Al) conductors.
Which Eaton enclosures accept the FS340125B breaker?
This unit mount F-frame breaker is designed for installation in Eaton Series C panelboards, switchboards, and motor control centers.
What is the ambient operating temperature for the FS340125B?
This circuit breaker is calibrated for continuous operation in ambient temperatures up to 40 degrees Celsius (104 degrees Fahrenheit).
How does the FS340125B mount into a panel?
It utilizes a feed-thru, unit mount design. It does not plug onto a busbar, but rather bolts directly to the chassis or mounting pan and connects via line and load lugs.
Can the FS340125B be used in DC applications?
Yes, this breaker is rated for DC systems up to 250VDC, providing a 10kAIC interrupting capacity for direct current applications.
Does this breaker provide ground fault protection?
No, the FS340125B is a standard thermal-magnetic breaker with long-time and instantaneous (LI) trip functions. It does not include ground fault equipment protection.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
Total 5 star reviews: 1 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
1 review
- AOAnthony O.ReviewingEaton / Cutler-Hammer FS340020A - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/18/21Circuit Breaker Purchase
All circuit breakers were shipped in a timely manner with no mistakes. Thank You!