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Square D FH16040C Molded Case Circuit Breaker
- 40A
- 1 Pole
- I-Line
Square D
FH16040C
Molded Case Circuit Breaker
Brand
Square D
SKU
FH16040C
Quantity
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Square D FH16040C - 40A 1 Pole Molded Case Circuit Breaker
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Description
Designed for commercial and industrial applications, the Square D FH16040C is a 1-pole, 40A molded case circuit breaker. It utilizes thermal-magnetic technology for reliable long-time and instantaneous (LI) protection. This legacy F-Frame unit installs into Square D I-Line panelboards and switchboards via a factory-configured Phase C connection. When upgrading, it is replaced by the PowerPact BGA140403. Rated at 65kAIC at 120VAC, it offers high interrupting capacity. It is HACR rated.Specifications
| Brand | Square D |
|---|---|
| Series | FH |
| Amperage | 40A |
| 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 | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Square D I-Line Panelboards, I-Line Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu), 12-1/0 AWG (Al) |
| Max Wire | 1/0 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 | Phase C Connection (Factory Configured), Lugs (AL100FA) |
| 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 "C" suffix in the FH16040C catalog number indicate?
The "C" suffix designates a factory-configured C-phase connection. Single-pole I-Line breakers must be ordered with the specific phase connection (A, B, or C) required for your panelboard layout.
Which panelboards accept the FH16040C circuit breaker?
This breaker is designed exclusively for Square D I-Line panelboards and switchboards. It features a plug-on line connection that mounts directly to the interior bus assembly.
Is the Square D FH frame still in active production?
The FH series is a legacy F-frame molded case circuit breaker. While still available for maintaining existing installations, Square D has transitioned to the PowerPact B-frame series for modern I-Line panel upgrades.
Can the FH16040C be used in direct current applications?
Yes, this thermal-magnetic breaker is rated for DC systems up to 125VDC, providing an interrupting capacity of 10kA.
How does the I-Line mounting system work for this breaker?
The breaker features a plug-on line jaw that engages the C-phase of the panel bus, secured by a mounting bracket and screw. The load side uses a standard mechanical lug for wire termination.
What type of trip protection does the FH16040C provide?
It utilizes a fixed thermal-magnetic trip unit. This provides long-time thermal protection against sustained overloads and instantaneous magnetic protection against short circuits.
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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