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Square D FH16040B Molded Case Circuit Breaker
- 40A
- 1 Pole
- I-Line
Square D
FH16040B
Molded Case Circuit Breaker
Brand
Square D
SKU
FH16040B
Quantity
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Square D FH16040B - 40A 1 Pole Molded Case Circuit Breaker
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Description
A reliable solution for industrial facilities, the FH16040B is a 40A, 1-pole molded case circuit breaker equipped with a Phase B connection. It utilizes proven thermal-magnetic trip technology to handle overloads and short circuits effectively. The unit is engineered to fit seamlessly into Square D I-Line panelboards and switchboards. Rated for 65kAIC at 120VAC and 25kAIC at 277VAC, this legacy F-Frame component provides excellent protection. This model is replaced by the BGA140403.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 |
| 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, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (AL100FA) |
| Standards | CSA C22.2 No. 5, HACR, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Phase Connection B |
Product FAQs
8 answersWhich panelboards are compatible with the FH16040B circuit breaker?
This breaker is designed exclusively for use in Square D I-Line panelboards and switchboards. It features an I-Line style plug-in connection for the line side.
Will this 1-pole breaker fit in a standard QO or Homeline load center?
No, this is an F-frame molded case circuit breaker with an I-Line plug-in connection. It will not fit in residential QO or Homeline load centers.
What wire sizes are accepted by the load side lugs on this breaker?
The load side terminals accept 14 to 1/0 AWG copper wire or 12 to 1/0 AWG aluminum wire.
Does this breaker require a separate mounting bracket for installation?
No, the I-Line plug-in design allows the breaker to mount directly onto the panelboard bus assembly without additional brackets.
Can the FH16040B be utilized in direct current systems?
Yes, this thermal magnetic breaker is rated for DC applications up to 125V DC, providing an interrupting capacity of 10kAIC.
What is the maximum interrupting rating for this breaker on a 277V AC circuit?
When installed in a 277V AC system, the breaker provides a maximum interrupting rating of 25kAIC. It is also rated for 65kAIC at 120V AC.
What type of trip mechanism does the FH16040B utilize?
It uses a non-interchangeable, fixed thermal magnetic trip unit that provides both long-time overload and instantaneous short circuit protection.
Is the FH16040B part of a current or legacy product line?
The FH series is a legacy F-frame molded case circuit breaker. While still widely used in existing I-Line installations, Schneider Electric has transitioned newer designs to the PowerPact series.
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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