Eaton / Cutler-Hammer FDB3100S Molded Case Circuit Breaker
- 100A
- 3 Pole
- Unit Mount
Eaton / Cutler-Hammer
FDB3100S
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FDB3100S
Quantity
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Eaton / Cutler-Hammer FDB3100S - 100A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial and industrial applications, the Eaton FDB3100S is a 3-pole, 100A molded case circuit breaker from the proven Series C F-frame lineup. This unit-mount breaker installs into Eaton Series C panelboards, switchboards, and motor control centers. It serves as a direct replacement for older Cutler-Hammer FDB models. Rated at 14 kAIC at 480VAC, it features fixed thermal-magnetic trip units and factory-installed stainless steel terminals for superior corrosion resistance.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3100S |
| Series | FDB |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 14-1/0 AWG (Cu/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 | Stainless Steel Load Side Terminals |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Stainless Steel Terminals |
Product FAQs
8 answersWhat is the difference between the Eaton FDB3100 and the FDB3100S?
The FDB3100S features factory-installed stainless steel line and load terminals. The standard FDB3100 typically ships with standard steel or aluminum lugs. Both share the same 100A, 3-pole F-frame footprint and electrical ratings.
Can I install the FDB3100S in an older Cutler-Hammer panel?
Yes, Eaton Series C F-frame breakers are fully backwards compatible with legacy Cutler-Hammer Series C panelboards, switchboards, and motor control centers.
What are the terminal torque specifications for the FDB3100S?
For the factory-installed slotted terminals, torque to 35 lb-in for 14-10 AWG, 40 lb-in for 8 AWG, 45 lb-in for 6-4 AWG, and 50 lb-in for 3-1/0 AWG conductors.
Can the FDB3100S be reverse fed?
Yes, all Eaton Series C F-frame thermal-magnetic circuit breakers, including the FDB3100S, are suitable for reverse feed applications.
Can I replace the factory lugs on the FDB3100S with different terminals?
Yes, the F-frame design allows for interchangeable line and load terminals. You can swap the factory stainless steel lugs for standard aluminum (e.g., 3TA100FD) or steel (e.g., 3T100FB) lugs if required by your application.
What does the "LI" trip function mean on this breaker?
"LI" stands for Long-Time and Instantaneous trip functions. The thermal-magnetic trip unit provides fixed thermal protection (Long-Time) for overloads and fixed magnetic protection (Instantaneous) for short circuits.
Does the FDB3100S accept internal accessories like shunt trips or auxiliary switches?
Yes, Eaton Series C F-frame breakers support a wide range of field-installable internal accessories, including shunt trips, auxiliary switches, and undervoltage releases. These are typically installed in the right or left pole accessory pockets.
Is the FDB3100S rated for high-intensity discharge (HID) lighting circuits?
No. While some Eaton F-frame breakers carry an HID rating, it only applies to models rated from 10A to 50A. At 100A, the FDB3100S is not suitable for HID applications.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
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Rating
2 reviews
- BBrentVerified BuyerReviewingEaton / Cutler-Hammer FDB3060 - 60A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/18/26Breaker was as expected.
Breaker was clean, you could not tell it was used.
- RFRussell F.Verified BuyerReviewingEaton / Cutler-Hammer FDB3025 - 25A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars2/24/26Right product, right time
This is what I needed, and I got it in time.