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Square D FHB16020A FH16020A - 20A 1 Pole Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FHB16020A
FH16020A - 20A 1 Pole Molded Case Circuit Breaker
Brand
Square D
SKU
FHB16020A
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Square D FH16020A - 20A 1 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, the Square D FHB16020A is a 1-pole, 20A molded case circuit breaker from the legacy F-frame family. It delivers reliable thermal-magnetic protection for branch circuits. This unit installs into Square D I-Line panelboards and features a Phase A jaw configuration. For modern upgrades, this legacy breaker is replaced by the PowerPact B-frame BGA14020. Rated for 65kAIC at 120VAC, it includes long-time and instantaneous trip functions.Specifications
| Brand | Square D |
|---|---|
| Part Number | FHB16020A |
| Series | FH |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 120VAC, 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 25kA @ 240VAC, 25kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu/Al) |
| Max Wire | 4 AWG |
| Min Wire | 14 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 | Phase Connection A |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the FHB16020A circuit 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 and will not fit standard NQ, NF, or QO load centers.
What does the "A" suffix in the FHB16020A catalog number indicate?
The "A" suffix indicates that this 1-pole breaker is factory-configured to connect to the A-phase bus of an I-Line panelboard.
Is the FHB16020A still actively manufactured, or is there a replacement?
The FHB16020A is part of the legacy Square D F-frame series. For modern upgrades or new installations, Schneider Electric replaces this with the PowerPact B-frame series, such as the BGA140201, which also mounts in I-Line panels.
What is the difference between the FH16020A and FHB16020A?
They refer to the same breaker. "FH" designates the frame type, while "FHB" is the complete catalog prefix specifying an FH-frame breaker with an I-Line plug-on connection.
Can the FHB16020A be used in DC voltage applications?
Yes, this thermal-magnetic breaker is rated for DC applications up to 125VDC, with a DC interrupting capacity of 10kA.
What wire sizes are accepted by the lugs on the FHB16020A?
The factory-installed lugs accept wire sizes from 14 AWG to 4 AWG, and are rated for both copper (Cu) and aluminum (Al) conductors.
Are the trip settings adjustable on the FHB16020A?
No, this breaker features fixed thermal and fixed magnetic trip settings. It provides standard long-time and instantaneous protection without adjustable dials.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.
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Rating
10 reviews
- DMDonald M.Verified BuyerReviewingSquare D FH36030 - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Excellent Service
The support team with Super Breakers went over and beyond in ensuring the breakers were on site for an emergency repair…
CAVA Construction Manager very pleased!
Donald Mayo
Mayo Electric
- PHpayton h.Verified BuyerReviewingSquare D FH36090 - 90A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/17/26great
great straightforward company has almost everything you could ever need in stock
- SGShawn G.Verified BuyerReviewingSquare D FH36020 - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars1/20/26Thanks !
Excellent service & gear per usual !
Thanks !
- EEarnestVerified BuyerReviewingSquare D FH36060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/3/25Fast delivery and quality
The breaker was in great condition.
- JPJason P.Verified BuyerReviewingSquare D FH36050 - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/5/25Breakers
Order was placed and they came in on time in good condition