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Square D FH16020B Molded Case Circuit Breaker
- 20A
- 1 Pole
- I-Line
Square D
FH16020B
Molded Case Circuit Breaker
Brand
Square D
SKU
FH16020B
Quantity
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Square D FH16020B - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
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Square D FH16020B - 20A 1 Pole Molded Case Circuit Breaker
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| Brand | Square D |
|---|---|
| Series | FH |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, I-Line Switchboards |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase B Connection (Factory Configured), Lugs (AL50FA) |
| Standards | HACR, UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Quantity
Square D FH16020B - 20A 1 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FH16020B-R |
| Series | FH |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, I-Line Switchboards |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase B Connection (Factory Configured), Lugs (AL50FA) |
| Standards | HACR, UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
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Description
Built for commercial and industrial applications, the FH16020B delivers 20A thermal-magnetic protection. This F-frame model is designed exclusively for Phase B busbar connections. The unit installs into standard Square D I-Line panelboards and switchboards. For modern upgrades, this legacy component is superseded by the PowerPact BGA140202. With an interrupting capacity of 65kA at 240VAC, it provides excellent short-circuit defense and is HACR rated for HVAC equipment.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH16020B-R |
| Series | FH |
| Amperage | 20A |
| Poles | 1 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 277VAC, 125VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 277VAC, 10kA @ 125VDC |
| Frame Type | FH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, I-Line Switchboards |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase B Connection (Factory Configured), Lugs (AL50FA) |
| Standards | HACR, UL 489, CSA C22.2 No. 5, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity |
Product FAQs
6 answersWhat does the "B" suffix in the FH16020B catalog number indicate?
The "B" suffix indicates that this 1-pole I-Line circuit breaker is factory-configured with a jaw connection designed to attach exclusively to the Phase B busbar in the panel.
Which panelboards accept the FH16020B circuit breaker?
This legacy F-frame breaker is designed specifically for installation in Square D I-Line panelboards and I-Line switchboards.
What is the modern replacement for the legacy FH16020B circuit breaker?
The FH16020B is a legacy component. For modern upgrades, Square D has superseded this model with the PowerPact B-frame series, specifically catalog number BGA140202, which provides equivalent 20A, 1-pole protection for I-Line panels.
How is the FH16020B physically installed in the panel?
The breaker features a plug-on I-Line jaw connection on the line side that engages directly with the panel busbar. The load side utilizes a standard mechanical lug for wire termination.
What wire sizes are accepted by the load-side lugs on this breaker?
The load-side mechanical lug accepts copper or aluminum conductors ranging from 14 AWG to 4 AWG.
Is the FH16020B suitable for use with HVAC equipment?
Yes, this circuit breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
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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