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Eaton / Cutler-Hammer FDB3040 Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
FDB3040
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
FDB3040
Quantity
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Eaton / Cutler-Hammer FDB3040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
Eaton / Cutler-Hammer FDB3040 - 40A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3040 |
| Series | FDB |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| 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, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| 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, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, HID Rated |
Quantity
Eaton / Cutler-Hammer FDB3040 - 40A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3040-R |
| Series | FDB |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| 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, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| 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, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, HID Rated |
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Description
Built to handle commercial power demands, this 40A F-Frame breaker provides fixed thermal and magnetic trip functions. The rugged construction ensures consistent performance across industrial environments. Installation requires a bolt-on connection into Eaton Series C or older Westinghouse panelboards. When upgrading, engineers note this model is replaced by the PDG23F0040TFFJ using a retrofit kit. Delivering 14kAIC at 480VAC, the HACR-rated unit features a quick-make, quick-break mechanism.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | FDB3040 |
| Series | FDB |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| 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, Westinghouse Panelboards, Motor Control Centers, Switchboards |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs |
| 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, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, HID Rated |
Product FAQs
10 answersWhat panelboards are compatible with the FDB3040 circuit breaker?
It is designed for bolt-on installation in Eaton Series C panelboards, legacy Westinghouse panelboards, motor control centers, and switchboards that accept F-frame breakers.
Can the FDB3040 be used to replace older Westinghouse breakers?
Yes, Eaton Cutler-Hammer Series C breakers serve as direct drop-in replacements for legacy Westinghouse F-frame breakers that share the same catalog numbers and physical dimensions.
What wire sizes are accepted by the standard lugs on this breaker?
The standard pressure load terminals accommodate 14 AWG to 1/0 AWG copper or aluminum wire. Always verify that your wire sizing aligns with local electrical codes for a 40-amp circuit.
Is the FDB3040 suitable for reverse feed applications?
Yes, this Series C F-frame breaker is rated for reverse feed applications, providing flexibility for specific wiring configurations in your distribution system.
Does this breaker carry an HACR rating?
Yes, the FDB3040 is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires this specific overcurrent protection standard.
What is the difference between the FDB3040 and the FDB3040L?
The standard FDB3040 typically includes load-side lugs for panelboard mounting, while the FDB3040L includes both line and load-side lugs for independent unit mounting or cable-to-cable applications.
What does the LI trip function indicate on this specific model?
The LI designation means the thermal-magnetic trip unit provides Long-Time (L) overload protection and Instantaneous (I) short-circuit protection. Both the thermal and magnetic trip points are fixed on this 40-amp model and cannot be adjusted in the field.
How does this breaker mount into the electrical panel?
This is a bolt-on circuit breaker. It secures directly to the busbar of compatible Series C or Westinghouse panelboards using mounting screws, which provides a highly secure connection for industrial environments.
Is there a modern equivalent or upgrade path for the FDB3040?
While the FDB3040 remains widely used, Eaton's Power Defense series offers a modern upgrade. Engineers often use the PDG23F0040TFFJ as a replacement, though a retrofit kit is typically required when installing it into older panelboards.
What safety and testing standards does this breaker meet?
This breaker complies with several major industry standards, including UL 489, CSA C22.2 No. 5, NEMA AB-1, and IEC 60947-2, ensuring reliable operation in commercial and industrial power systems.
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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.