Eaton / Cutler-Hammer EGB2125FFB Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Eaton / Cutler-Hammer EGB2125FFB - 125A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of the Series G family, this 125A molded case circuit breaker is engineered for commercial power distribution. It features a compact EG frame with fixed thermal-magnetic trip units. The bolt-on configuration installs into Eaton Pow-R-Line panelboards, providing a secure mechanical connection. It serves as a reliable component for facility upgrades and crosses to the newer Power Defense series. Rated 18kAIC at 480VAC, it utilizes current-limiting action to isolate faults quickly.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EGB2125FFB |
| Series | EGB |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 125/250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 125/250VDC |
| Frame Type | EG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards |
| Wire Gauge | 4-4/0 AWG |
| Max Wire | 4/0 AWG |
| Min Wire | 4 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, Motor Operator, Rotary Handle |
|---|---|
| Accessories | Load Side Terminals, Mounting Hardware |
| Standards | CSA C22.2 No. 5, IEC 60947-2, UL 489 |
| Approval | CE, CSA, IEC, KEMA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
6 answersWhat panelboards are compatible with the EGB2125FFB circuit breaker?
This EG-frame breaker is engineered for use in Eaton Pow-R-Line panelboards, switchboards, and motor control centers.
How is the EGB2125FFB secured within the panelboard?
It is a bolt-on breaker designed to be mechanically fastened to the busbar of Eaton Pow-R-Line panelboards, ensuring a secure connection for commercial and industrial applications.
What wire size is accepted by the terminals on the EGB2125FFB?
The standard lugs accommodate wire sizes ranging from 4 AWG to 4/0 AWG.
Can the EGB2125FFB be used in direct current systems?
Yes, this breaker is rated for DC applications, providing a 10kAIC interrupting capacity at 125/250VDC alongside its standard AC ratings.
Does this breaker allow for field adjustments to the trip curve?
No, the EGB2125FFB utilizes fixed thermal and fixed magnetic trip elements. The long-time and instantaneous protection settings cannot be adjusted.
What type of fault protection does the LI trip function provide?
The thermal-magnetic LI trip unit provides long-time protection for sustained overloads and instantaneous protection to quickly clear short circuits.
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