Eaton / Cutler-HammerEGH2040FFB
Eaton / Cutler-Hammer EGH3040FFB Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
EGH3040FFB
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
EGH3040FFB
Quantity
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Eaton / Cutler-Hammer EGH3040FFB - 40A 3 Pole Molded Case Circuit Breaker
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Description
Built for heavy-duty commercial distribution, the Eaton EGH3040FFB is a 3-pole, 40A molded case circuit breaker. It secures into Eaton Pow-R-Line panelboards via a reliable bolt-on mounting style. The EG-frame device utilizes fixed thermal and magnetic trip units to provide essential long-time and instantaneous (LI) protection. Boasting a 65 kAIC interrupting capacity at 480V, it incorporates current-limiting technology to minimize let-through energy during a fault.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EGH3040FFB |
| Series | EGH |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 35kA @ 600Y/347VAC, 42kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line Panelboards |
| 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, Handle Lock |
|---|---|
| Accessories | Load Side Lugs, Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, NEMA AB 1, UL 489 |
| Approval | CE, CSA, IEC, KEMA, UL |
| Temp Rating | -20C to 70C |
| Construction Features | Current Limiting, HACR Rated, High Interrupting Capacity |
Product FAQs
7 answersWhat panelboards are compatible with the EGH3040FFB circuit breaker?
The EGH3040FFB is designed for use in Eaton Pow-R-Line panelboards. It features a bolt-on mounting style for secure connection to the panel bus.
How is the EGH3040FFB mounted?
The EGH3040FFB features a bolt-on connection type, which is standard for installation in Eaton Pow-R-Line panelboards. While the EG-frame family supports DIN rail mounting, this specific "B" suffix model is configured for bolt-on panelboard use.
What wire sizes and materials are accepted by the EGH3040FFB terminals?
The standard lugs on this EG-frame breaker accept 14 AWG to 1/0 AWG wire. The terminals are rated for use with both copper (Cu) and aluminum (Al) conductors.
What does the "FFB" in the EGH3040FFB catalog number indicate?
In the Eaton Series G nomenclature, "FF" indicates that the breaker has fixed thermal and fixed magnetic trip units. The "B" indicates it is a bolt-on breaker designed for panelboard installation.
What does the "H" in the EGH3040FFB part number stand for?
The "H" designates this as a high-interrupting tier breaker within the Eaton Series G family. It provides an elevated interrupting capacity of 65 kAIC at 480VAC, compared to standard EG breakers.
What type of protection does the EGH3040FFB provide?
This breaker utilizes a thermal-magnetic trip unit with LI (Long-Time and Instantaneous) functions. The thermal element provides long-time protection against overloads, while the magnetic element offers instantaneous protection against short circuits.
Can the EGH3040FFB be used in direct current (DC) applications?
Yes, in addition to its standard AC ratings, this breaker is rated for 250VDC applications with an interrupting capacity of 42 kAIC, making it suitable for specific DC control or distribution circuits.
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