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Eaton / Cutler-Hammer HFD1100 Molded Case Circuit Breaker
- 100A
- 1 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFD1100
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFD1100
Quantity
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Eaton / Cutler-Hammer HFD1100 - 100A 1 Pole Molded Case Circuit Breaker
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Description
Part of Eaton's Series C line, the HFD1100 is a single-pole, 100A molded case circuit breaker for commercial applications. It utilizes fixed thermal-magnetic trip units for reliable LI protection. This F-Frame breaker installs into Eaton Series C panelboards and switchboards. It crosses over to the Power Defense PDG21M0100TFFJ for modern upgrades. Engineered for high-capacity systems, it delivers a 65 kAIC rating at 277VAC. The breaker is HACR rated and features current-limiting capabilities.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Series | HFD |
| Amperage | 100A |
| Poles | 1 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 277VAC, 125VDC, 347VAC |
| Phase | 1 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 277VAC, 10kA @ 125VDC, 35kA @ 347VAC |
| Frame Type | F |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards |
| Wire Gauge | 14 AWG - 1/0 AWG |
| 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 | Auxiliary Switch, Shunt Trip, Undervoltage Release, Alarm Switch, Handle Lock |
|---|---|
| Accessories | Load Side Lugs (Included) |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CE, CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Reverse Feed, Current Limiting |
Product FAQs
8 answersWhich panelboards accept the HFD1100 circuit breaker?
The HFD1100 is designed for installation in Eaton Series C panelboards and switchboards configured for F-frame breakers.
What is the difference between the Eaton FD1100 and HFD1100?
Both are 100A, 1-pole Series C F-frame breakers, but the HFD1100 is the high-interrupting version. It provides a 65kAIC rating at 277VAC, which is higher than the standard FD1100 interrupting capacity.
Can the HFD1100 be reverse fed?
Yes, as a thermal-magnetic Series C F-frame breaker without line and load restrictions, the HFD1100 is suitable for reverse feed applications.
Is the HFD1100 rated for direct current (DC) systems?
Yes, this breaker is rated for DC applications, providing a 10kAIC interrupting rating at 125VDC.
Will this breaker replace older Westinghouse or Cutler-Hammer HFD1100 models?
Yes. Eaton acquired the Cutler-Hammer and Westinghouse molded case circuit breaker lines. The Eaton HFD1100 is a direct replacement for older Westinghouse and Cutler-Hammer breakers sharing the same catalog number.
What protection does the LI trip function provide on this breaker?
The LI designation means the thermal-magnetic trip unit includes Long-Time (thermal) protection for sustained overloads and Instantaneous (magnetic) protection for immediate short-circuit clearing.
What is the modern Power Defense equivalent for the HFD1100?
The HFD1100 crosses over to the Eaton Power Defense PDG21M0100TFFJ for modern panel upgrades, maintaining the same 100A rating and F-frame footprint.
Is the HFD1100 suitable for HVAC applications?
Yes, the HFD1100 is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 21 reviews.
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Rating
21 reviews
- CHcarl h.Verified BuyerReviewingEaton / Cutler-Hammer HFD3200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/20/26Breaker
Breaker shipped out and we received it super quick.
- DLDeanna L.Verified BuyerReviewingEaton / Cutler-Hammer HFD3150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/26Eaton / Cutler-Hammer HFD3150 - 150A 3 Pole Molded Case Circuit Breaker
We needed more breakers ASAP and once again, Michael David came thru like he always does. We are a 24/7/ emergency electrical restoration companyso most of our orders are always needed in a rush and SuperBreakers is always my go to!.
- RFRon F.Verified BuyerReviewingEaton / Cutler-Hammer HFD3045 - 45A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars4/9/26HFD3045
Perfect breaker & great price/delivery. It's very easy to schedule around SB as their projected delivery times are accurate.
- CPChristopher P.Verified BuyerReviewingEaton / Cutler-Hammer HFD3020L - 20A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/13/26Fast and Cost effective
Superbreakers Is always my first palce to look for harder to source breakers for a good price, and fast turnaround.
- DSDavid S. B. D.Verified BuyerReviewingEaton / Cutler-Hammer HFD3060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/6/26Breaker
Great response time and product