Square D FH36020G Molded Case Circuit Breaker
- 20A
- 3 Pole
- I-Line
Quantity
Square D FH36020G - 20A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial applications, the Square D FH36020G is a 3-pole, 20A legacy F-Frame MCCB. It provides reliable thermal-magnetic protection for demanding electrical systems. This unit installs into Square D I-Line panelboards using a plug-on connection. For modern upgrades, this model is replaced by the newer HGA36020 breaker.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH36020G |
| Series | FH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | FH |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards |
| Wire Gauge | 14-4 AWG (Cu), 12-4 AWG (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 | Auxiliary Switch, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Ground Fault Shunt Trip (Factory Installed) |
| 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
7 answersWhat type of panelboards is the FH36020G compatible with?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on connection that ratchets firmly onto the I-Line bus stack.
Is the FH36020G still manufactured, or is there a direct replacement?
The FH36020G is a legacy F-Frame MCCB. For modern upgrades or replacements, Square D (Schneider Electric) recommends the PowerPact H-Frame series, specifically the HGA36020, which also mounts directly into I-Line panelboards.
Can the FH36020G replace an older FA-frame breaker?
Yes, the FH36020G shares the same physical dimensions and I-Line mounting as the standard FA-frame. It can be used as a direct upgrade, offering a higher interrupting rating of 65kAIC at 240VAC.
Does this breaker require a separate mounting bracket for installation?
No, as an I-Line style plug-in breaker, it mounts directly onto the panelboard bus stack and is secured with a screwdriver. No additional mounting hardware or brackets are required for standard installation.
What wire sizes are compatible with the factory lugs on this breaker?
The factory lugs accept 14 AWG to 4 AWG copper (Cu) wire, or 12 AWG to 4 AWG aluminum (Al) wire.
What type of trip unit does the FH36020G use?
It utilizes a fixed thermal-magnetic trip unit, providing both long-time (thermal) protection for overloads and instantaneous (magnetic) protection for short circuits.
Can the FH36020G be used in DC applications?
Yes, this breaker is rated for 250VDC systems with an interrupting capacity of 10kAIC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 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