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Square D FH36020-1371 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FH36020-1371
Molded Case Circuit Breaker
Brand
Square D
SKU
FH36020-1371
Quantity
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Square D FH36020-1371 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Operating within commercial systems, the Square D FH36020-1371 delivers dependable thermal-magnetic protection. This 20A MCCB is part of the legacy F-Frame line. Engineered for compatibility, it connects into Square D I-Line panelboards. Facilities transitioning to current hardware can replace this unit with the PowerPact BGA36020. The device provides a 65kAIC rating at 240VAC. The 1371 suffix indicates a specialized factory configuration, without altering the core electrical specifications.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH36020-1371-R |
| Series | FH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| 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, Alarm Switch, Undervoltage Release |
|---|---|
| Accessories | Factory suffix 1371 (Likely packaging/labeling variation; no functional modification confirmed) |
| 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, Non-Interchangeable Trip |
Product FAQs
6 answersWhat does the -1371 suffix indicate on the FH36020-1371 circuit breaker?
The -1371 suffix denotes a specialized factory configuration, typically a packaging or labeling variation. It does not alter the core electrical specifications, trip curve, or physical dimensions of the standard FH36020 breaker.
What is the current replacement for the legacy FH36020-1371?
The legacy F-Frame FH36020-1371 has been superseded by the Square D PowerPact B-Frame series. The recommended modern replacement is catalog number BGA36020.
How does the FH36020-1371 differ from the FA36020?
The FH series is the high-interrupting version of the standard FA series. While both share the same physical F-Frame footprint, the FH36020 provides elevated interrupting ratings for systems with higher available fault currents.
Can I install the FH36020-1371 in a standard Square D QO or Homeline load center?
No. This breaker utilizes an I-Line plug-in mounting configuration and is strictly designed for Square D I-Line panelboards and switchboards. It will not fit in QO, Homeline, NQ, or NF enclosures.
Does the FH36020-1371 require a separate mounting hardware kit?
No. As an I-Line plug-in breaker, it features integrated mounting jaws that engage directly with the I-Line panelboard bus assembly. No additional mounting hardware or strap kits are required for installation.
Can the trip unit on the FH36020-1371 be swapped or upgraded?
No. This F-Frame breaker features a non-interchangeable thermal magnetic trip unit. The trip elements are factory-sealed and cannot be modified or replaced in the field.
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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