Square D FH16100A Molded Case Circuit Breaker
- 100A
- 1 Pole
- I-Line
Quantity
Square D FH16100A - 100A 1 Pole Molded Case Circuit Breaker
New
Quantity
Description
Operating within legacy Square D I-Line panelboards and switchboards, this 100-amp F-frame molded case circuit breaker provides essential long-time and instantaneous (LI) protection. The unit features a factory-configured Phase A connection and mounts securely into compatible bus systems. While this specific F-frame model is a legacy component, it serves as an exact fit for existing infrastructure and is officially superseded by the PowerPacT BGA14100 series for newer installations.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH16100A |
| 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, Square D 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, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Phase A 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, Visual Trip Indicator, Trip-Free Mechanism, Phase Connection A |
Product FAQs
7 answersWhat does the A suffix in the FH16100A catalog number indicate?
The A suffix indicates that this 1-pole breaker is factory configured to connect to the A-phase of the I-Line bus.
Is the Square D FH16100A still in active production?
No, the Square D F-frame series is a legacy product and has been discontinued by the manufacturer. It has been superseded by the PowerPact B-frame series.
What is the modern replacement for the FH16100A in I-Line panelboards?
The designated replacement is the PowerPact B-frame BGA14100. The B-frame maintains the same mounting space requirements, allowing it to drop directly into existing I-Line panelboards without bus modifications.
How does this breaker mount into the panelboard?
It features an I-Line style plug-in connection on the line side, which uses blow-on joint jaws to attach directly to the panelboard bus. The load side utilizes mechanical lugs for wire termination.
Will the FH16100A fit in standard QO or NQ load centers?
No, this is an I-Line molded case circuit breaker. It is only compatible with Square D I-Line panelboards and switchboards, not standard residential or commercial plug-on load centers.
Can the trip unit on the FH16100A be replaced or upgraded in the field?
No, the FH16100A features a sealed frame with a fixed thermal magnetic trip unit. It does not support field-interchangeable trip units.
What safety precautions are required when installing an I-Line breaker?
Installation should only be performed by a qualified electrician. Ensure the panelboard is fully de-energized before installing or removing the breaker, and verify that the phase connection matches the intended load requirements.
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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