Free Shipping Over $99
Square D FH26100AC Molded Case Circuit Breaker
- 100A
- 2 Pole
- I-Line
Square D
FH26100AC
Molded Case Circuit Breaker
Brand
Square D
SKU
FH26100AC
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Square D FH26100AC - 100A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Square D FH26100AC - 100A 2 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Square D |
|---|---|
| Part Number | FH26100AC |
| Series | FH |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC (Factory Configured) |
| 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, Visual Trip Indicator |
Sold out
Quantity
Square D FH26100AC - 100A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Square D |
|---|---|
| Part Number | FH26100AC |
| Series | FH |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC (Factory Configured) |
| 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, Visual Trip Indicator |
Similar Items
80A 2 Pole Molded Case Circuit Breaker
70A 2 Pole Molded Case Circuit Breaker
70A 2 Pole Molded Case Circuit Breaker
Description
Built for industrial environments, the Square D FH26100AC is a 2-pole, 100A molded case circuit breaker. It provides dependable thermal-magnetic protection with fixed LI trip functions. This legacy F-Frame breaker is designed for use with Square D I-Line panelboards. For facilities upgrading their switchgear, this model is replaced by the PowerPact HGA261002. The unit is distinguished by its AC phase connection, a Visi-Trip indicator, and a 65kAIC rating at 240VAC.Specifications
| Brand | Square D |
|---|---|
| Part Number | FH26100AC |
| Series | FH |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | I-Line |
| Voltage | 240VAC, 480Y/277VAC, 480VAC, 600Y/347VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480Y/277VAC, 25kA @ 480VAC, 18kA @ 600Y/347VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| 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, Alarm Switch, Undervoltage Release, Padlock Attachment |
|---|---|
| Accessories | Phase Connection AC (Factory Configured) |
| 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, Visual Trip Indicator |
Product FAQs
7 answersWhat does the AC suffix indicate on the FH26100AC catalog number?
The AC suffix specifies the jaw configuration for the I-Line plug-in connection. It dictates that the breaker will connect to the A and C phases on the panelboard busbar.
What equipment is compatible with the FH26100AC circuit breaker?
This F-frame breaker is designed exclusively for Square D I-Line panelboards and switchboards. It requires an I-Line plug-in mounting interface and cannot be used in standard load centers.
What is the current replacement for the legacy FH26100AC?
The legacy F-frame series has been replaced by the Square D PowerPact H-frame line. The direct modern equivalent for this breaker is the HGA261002, which maintains the 100A rating and AC phase connection.
What are the acceptable wire sizes for the terminals on this breaker?
The standard mechanical lugs accept 14 AWG to 1/0 AWG copper (Cu) conductors, or 12 AWG to 1/0 AWG aluminum (Al) conductors.
Is the FH26100AC rated for direct current (DC) systems?
Yes, this breaker is rated for use in DC applications up to 250VDC, where it provides a 10kA interrupting rating.
Can the trip curve be adjusted on the FH26100AC?
No, this breaker is equipped with a non-interchangeable, fixed thermal and fixed magnetic trip unit. The long-time and instantaneous pickup levels are factory set and cannot be modified.
What does the LI trip function code indicate on this breaker?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) protection for overloads and Instantaneous (I) protection for short circuits. Both functions are fixed on this model.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 10 reviews.
Search
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