Eaton / Cutler-HammerEGS2040FFB
Eaton / Cutler-Hammer EGS3040FFB Molded Case Circuit Breaker
- 40A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
EGS3040FFB
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
EGS3040FFB
Quantity
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Eaton / Cutler-Hammer EGS3040FFB - 40A 3 Pole Molded Case Circuit Breaker
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Description
Designed for commercial distribution systems, the Eaton EGS3040FFB is a 3-pole, 40A bolt-on molded case circuit breaker. As part of the Series G EG-frame lineup, it utilizes a fixed thermal and fixed magnetic trip unit to deliver dependable long-time and instantaneous (LI) protection. This breaker mounts into Eaton Pow-R-Line panelboards and includes load-side lugs. Featuring a 35kAIC rating at 480VAC and high-speed blow-open action, it ensures excellent current-limiting capabilities.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | EGS3040FFB |
| Series | EGS |
| Amperage | 40A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600Y/347VAC, 125/250VDC |
| Phase | 3 |
| AIC Rating | 85kA @ 240VAC, 35kA @ 480VAC, 22kA @ 600Y/347VAC, 35kA @ 125/250VDC |
| Frame Type | EG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Pow-R-Line Panelboards |
| Wire Gauge | 14-1/0 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 | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment, Motor Operator |
|---|---|
| Accessories | Load Side Lugs Included, 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, Current Limiting, High-Speed Blow-Open Action |
Product FAQs
6 answersWhich panelboards accept the EGS3040FFB circuit breaker?
The EGS3040FFB is a bolt-on branch breaker designed specifically for Eaton Pow-R-Line distribution panelboards. It connects directly to the panelboard bus using its line-side bolt-on tabs.
What is the difference between the EGS3040FFB and the EGS3040FFG?
Both are 40A, 3-pole Series G EG-frame breakers with identical trip units and interrupting ratings. The difference is the termination. The EGS3040FFB has bolt-on line tabs for panelboard mounting, while the EGS3040FFG features standard wire lugs on both the line and load sides.
The description mentions DIN rail mounting, but the specs say bolt-on. Which is correct?
The EGS3040FFB is a bolt-on breaker. The B suffix in the catalog number designates bolt-on line tabs for Pow-R-Line panelboards. While standard EG-frame breakers can sometimes use DIN rail adapters, this specific variant requires a bolted bus connection.
What wire sizes are compatible with the load terminals on this breaker?
The load-side lugs on the EGS3040FFB accept wire gauges from 14 AWG up to 1/0 AWG. Ensure you torque the terminals to the manufacturer specifications found on the breaker label.
Is the trip unit on the EGS3040FFB adjustable?
No. This breaker uses a fixed thermal and fixed magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are factory-set for 40 amps and cannot be modified in the field.
Can the EGS3040FFB be used in 125/250VDC systems?
Yes, this thermal-magnetic breaker is rated for DC applications up to 125/250VDC, where it provides a 35kAIC interrupting rating.
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