Square D FYB14020A Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FYB14020A
Molded Case Circuit Breaker
Brand
Square D
SKU
FYB14020A
Quantity
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Square D FYB14020A - 20A 1 Pole Molded Case Circuit Breaker
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Description
A reliable solution for commercial facilities, the Square D FYB14020A is a 1-pole, 20A molded case circuit breaker from the legacy F-frame lineup. It provides robust thermal-magnetic protection with an elevated 18 kAIC interrupt capacity at 277VAC. Designed for I-Line panelboards and switchboards, this unit utilizes a plug-on mounting style for efficient installation. This specific model is configured for a phase A connection, comes with load side lugs, and is both HACR and SWD rated.Specifications
| Brand | Square D |
|---|---|
| Part Number | FYB14020A |
| 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
5 answersWhat type of panelboards accept the FYB14020A breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection that mounts directly to the busbar stack.
What wire sizes and materials are supported by the lugs on this breaker?
The terminal lugs on the FYB14020A accept 14 to 4 AWG copper wire, or 12 to 4 AWG aluminum wire.
Can the FYB14020A be used in direct current systems?
Yes, this breaker is rated for DC applications up to 125VDC, where it provides an interrupting capacity of 10kA.
How does the trip unit function on the FYB14020A?
It utilizes a fixed thermal-magnetic trip unit. This mechanism provides long-time thermal protection against standard overloads and instantaneous magnetic protection against short circuits.
Is the FYB14020A part of a current or legacy product line?
The FYB frame is part of the Square D legacy F-Frame molded case circuit breaker family. It serves as a direct replacement for existing I-Line installations requiring a 1-pole, 20A breaker.
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