Square D FH36020-2100 Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Square D
FH36020-2100
Molded Case Circuit Breaker
Brand
Square D
SKU
FH36020-2100
Quantity
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Square D FH36020-2100 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Designed for commercial and industrial environments, the Square D FH36020-2100 is a 3-pole, 20A molded case circuit breaker. It provides dependable thermal-magnetic protection for critical electrical systems. This legacy F-Frame breaker installs into Square D I-Line panelboards using a secure plug-on connection. It serves as a direct replacement for older installations, though it has been superseded by the HGA36020. Rated at 25kAIC at 480VAC, it features a factory-installed bell alarm [8, 10].Specifications
| Brand | Square D |
|---|---|
| Part Number | FH36020-2100 |
| 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, Undervoltage Release |
|---|---|
| Accessories | Alarm Switch |
| Standards | CSA C22.2 No. 5, HACR, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Visual Trip Indicator |
Product FAQs
6 answersWhat does the -2100 suffix indicate on the FH36020-2100 catalog number?
The -2100 suffix designates that this circuit breaker includes a factory-installed bell alarm. This internal contact switch provides remote indication when the breaker trips due to an overload or short circuit.
Can the FH36020-2100 be installed in standard bolt-on panelboards?
No. This breaker features an I-Line style plug-in connection designed exclusively for Square D I-Line power distribution panelboards and switchboards. It cannot be installed in standard bolt-on enclosures or residential load centers.
Are the thermal and magnetic trip settings adjustable on the FH36020-2100?
No. This breaker utilizes a fixed thermal-magnetic trip unit. Both the Long-Time thermal overload protection and Instantaneous magnetic short-circuit protection are factory set and cannot be adjusted in the field.
What are the wire size requirements for the FH36020-2100 terminals?
The factory-installed lugs are dual-rated for both copper and aluminum conductors, accepting wire sizes from 14 AWG to 4 AWG. Ensure all connections are torqued to the manufacturer specifications printed on the breaker label.
Can the FH36020-2100 be applied in DC voltage systems?
Yes. In addition to its AC ratings, this F-frame breaker is rated for use on DC systems up to 250V DC, where it provides a 10kA interrupting capacity.
Does the bell alarm on the FH36020-2100 activate during manual switching?
No. The factory-installed bell alarm, indicated by the -2100 suffix, only changes state when the breaker trips due to an overcurrent or short circuit. It does not activate when the breaker handle is manually toggled on or off.
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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