Square D FYB14020C Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FYB14020C
Molded Case Circuit Breaker
Brand
Square D
SKU
FYB14020C
Quantity
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Square D FYB14020C - 20A 1 Pole Molded Case Circuit Breaker
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Description
Built for commercial environments, the Square D FYB14020C is a thermal-magnetic molded case circuit breaker delivering dependable overcurrent protection. Designed for Square D I-Line panelboards, this 1-pole breaker utilizes a plug-on mounting style. As a legacy F-frame component, it is officially replaced by the BDA140205 for modern panel upgrades. Featuring an 18 kAIC rating at 277VAC, the unit includes a Phase C connection. It is HACR and SWD rated for lighting and HVAC loads.Specifications
| Brand | Square D |
|---|---|
| Series | FY |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 120VAC, 18kA @ 240VAC, 18kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FYB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards and Switchboards |
| 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 | Handle 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, SWD Rated, Visual Trip Indicator |
Product FAQs
7 answersIs the FYB14020C obsolete, and what is the current replacement?
Yes, the FYB frame is a legacy product. For system updates in I-Line panelboards, it is replaced by the PowerPacT B-Frame BDA140205, which maintains the 20A rating, 1-pole configuration, and factory-configured Phase C connection.
What does the "C" suffix in the FYB14020C catalog number indicate?
The "C" indicates a factory-configured Phase C connection. In Square D I-Line panelboards, 1-pole breakers are phase-specific, meaning this unit is designed to plug directly into the C phase of the panel bus.
How does the I-Line connection work on the FYB14020C?
The breaker features a plug-on line connection that mounts directly onto the I-Line panelboard bus. The load side utilizes a mechanical lug to secure the outgoing circuit wire.
What wire sizes and materials are accepted by the load lug?
The load-side lug is rated to accept 14 to 4 AWG copper wire or 12 to 4 AWG aluminum wire.
Can the FYB14020C be used in direct current (DC) applications?
Yes, this breaker is rated for DC systems up to 125VDC, providing an interrupting capacity of 10kAIC.
Are the thermal and magnetic trip settings adjustable on this breaker?
No, the FYB14020C features a fixed thermal-magnetic trip unit. Both the long-time and instantaneous trip functions are factory set and non-adjustable.
Will the FYB14020C fit in standard Square D NQ or NF panelboards?
No, this breaker is designed exclusively for Square D I-Line panelboards and switchboards. It is not compatible with NQ, NF, QO, or Homeline panels.
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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