Square D FY14025B Molded Case Circuit Breaker
- 25A
- 1 Pole
- I-Line
Square D
FY14025B
Molded Case Circuit Breaker
Brand
Square D
SKU
FY14025B
Quantity
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Square D FY14025B - 25A 1 Pole Molded Case Circuit Breaker
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Description
A drop-in solution for aging infrastructure, the Square D FY14025B is a 1-pole, 25A molded case circuit breaker. It provides essential long-time and instantaneous (LI) protection using proven fixed thermal and magnetic trip mechanisms. This configuration features a Phase B connection and mounts into Square D I-Line panelboards. For modern upgrades, this legacy component is officially replaced by the PowerPacT B-Frame BDA140253. The breaker carries an 18 kAIC rating at 277VAC and is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Series | FY |
| Amperage | 25A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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 Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Phase B Connection |
Product FAQs
6 answersWhat does the "B" at the end of the FY14025B catalog number indicate?
For Square D 1-pole I-Line circuit breakers, the final letter designates the phase connection. The "B" in FY14025B means the breaker is factory configured to plug into the B-phase of the panelboard bus.
Is the Square D FY14025B still in active production?
No, the Square D FY frame is obsolete and no longer manufactured by Schneider Electric. It has been superseded by the modern PowerPact B-frame series. The legacy FA frame, specifically the FA14025B, also serves as a direct physical replacement.
How does the I-Line mounting system work for the FY14025B?
The breaker features plug-on jaws on the line side that connect directly to the I-Line panelboard bus. The load side utilizes a standard mechanical lug for wire termination. A built-in mounting bracket with a retaining screw secures the breaker to the panel interior.
What applications are suitable for the 277V rating on the FY14025B?
The 277VAC rating and 18kA interrupting capacity make this breaker ideal for commercial 277V fluorescent or LED lighting circuits, as well as other single-phase 277V industrial loads.
Which panelboards accept the FY14025B circuit breaker?
This breaker is exclusively compatible with Square D I-Line panelboards and switchboards. It features a specific plug-on footprint that will not fit in standard QO, NQ, or NF series distribution panels.
Can the trip settings on the FY14025B be adjusted in the field?
No, this breaker features a fixed thermal magnetic trip unit. Both the long-time thermal overload and instantaneous magnetic short-circuit trip functions are factory set and cannot be modified.
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Reviews
Review summary
Customers rate this product 4.8 out of 5 based on 6 reviews.
Total 5 star reviews: 5 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
6 reviews
- KWKenneth W.Verified BuyerReviewingSquare D FY14020C - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars11/15/25I line breakers
20/2 I line
And the
20/1 I line replacement for damaged breaker
Worked fine
- PEPaul E.ReviewingSquare D FY14020B - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/7/23Great service and pricing
Great service and pricing
- SMSam M.ReviewingSquare D FY14015B - 15A 1 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars6/20/19Sam Mufti
Sale person was professional . Got breakers on time.
- RCRic C.ReviewingSquare D FY14020B - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/2/19Very pleased with price &
Very pleased with price & delivery.
- RSRobin S.ReviewingSquare D FY14020A - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/16/19Great deal
Good pricing and great customer service