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Square D FH16100C Molded Case Circuit Breaker
- 100A
- 1 Pole
- I-Line
Square D
FH16100C
Molded Case Circuit Breaker
Brand
Square D
SKU
FH16100C
Quantity
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Square D FH16100C - 100A 1 Pole Molded Case Circuit Breaker
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Description
Designed specifically for Square D I-Line panelboards, this 100A single-pole breaker utilizes a Phase C bus connection for balanced load distribution. The legacy F-frame construction houses a fixed thermal-magnetic trip unit, delivering reliable LI protection for commercial applications. Rated for 65kA interrupting capacity at 120VAC, it maintains system safety while offering a straightforward replacement path to the modern PowerPacT BGA161005 series when facility upgrades are required.Specifications
| Brand | Square D |
|---|---|
| Series | FH |
| Amperage | 100A |
| 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 | FH |
|---|---|
| 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, Visual Trip Indicator |
Product FAQs
8 answersWhat does the "C" suffix in the FH16100C catalog number indicate?
The "C" designates that this single-pole breaker is factory-configured to connect exclusively to Phase C on the I-Line busbar. This phase-specific mounting helps maintain balanced load distribution across the panelboard.
Will this breaker fit in standard Square D NQ or NF panelboards?
No. The FH16100C is engineered exclusively for I-Line panelboards and switchboards. It utilizes a specialized plug-on jaw that is incompatible with the mounting rails found in NQ, NF, or QO load centers.
Can the FH16100C be used to upgrade an FA16100C breaker?
Yes. The high-interrupting FH frame shares the exact physical dimensions and I-Line mounting footprint as the standard FA frame. Swapping an FA16100C for an FH16100C provides a direct upgrade path for systems requiring higher fault current protection.
What is the modern PowerPacT replacement for the legacy FH16100C?
For facility upgrades requiring current-generation hardware, the direct replacement path is the PowerPacT B-frame series. The BGA161005 provides the equivalent 100A, Phase C I-Line connection with updated thermal-magnetic technology.
Is the FH16100C suitable for battery backups or DC control circuits?
Yes. In addition to its standard AC ratings, the internal thermal-magnetic trip mechanism is certified for DC applications. It can safely interrupt faults up to 10kA in 125VDC systems.
Are the thermal and magnetic trip settings adjustable on the FH16100C?
No. The FH16100C features a fixed thermal-magnetic trip unit. Both the long-time thermal and instantaneous magnetic trip thresholds are factory-set and cannot be modified in the field.
How are the line and load connections configured on this breaker?
The line side features a shrouded plug-on jaw that engages directly with the I-Line busbar for rapid installation. The load side uses a standard mechanical lug for terminating the branch circuit conductor.
Does the FH16100C provide ground-fault equipment protection (GFEP)?
No. This model is a standard thermal-magnetic breaker equipped with fixed long-time and instantaneous trip functions. It does not contain the internal circuitry required for ground-fault or arc-fault protection.
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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