Allen Bradley 140G-J6F3-D25 Circuit Breaker
- 250A
- 3 Pole
- Panel Mount
Quantity
Allen Bradley 140G-J6F3-D25 3 Pole Circuit Breaker
New
Quantity
Description
Allen Bradley 140G-J6F3-D25 3 Pole Circuit Breaker
The Allen Bradley 140G-J6F3-D25 is a 3 Pole thermal magnetic molded case circuit breaker with a current rating of 250 Amps and a voltage rating of 600VAC. It has an interrupting rating of 65kAIC at 480V. The 140G-J6F3-D25 has a bolt-on connection type and includes long time and instantaneous trip functions.
Specifications
| Brand | Allen Bradley |
|---|---|
| Series | 140G |
| Amperage | 250A |
| Poles | 3 |
| Mounting Style | Panel Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 150kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC |
| Amperage Range | 175-250A |
|---|
| Frame Type | J |
|---|
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable Thermal, Adjustable Magnetic |
| Approval | CCC |
|---|
Product FAQs
6 answersWhat are the adjustable thermal and magnetic trip ranges for the 140G-J6F3-D25?
The thermal overload protection is adjustable from 175A to 250A. The magnetic short-circuit protection is adjustable from 1250A to 2500A. This allows for precise selective coordination in your power distribution system.
Is the 140G-J6F3-D25 compatible with internal control accessories?
Yes. The 140G J-frame design allows for the field installation of internal accessories. You can add standard Allen Bradley auxiliary contacts, alarm switches, undervoltage releases, or shunt trip mechanisms to integrate the breaker with your control system.
How does the interrupting rating of this breaker vary with different system voltages?
The standard interrupting rating is 65 kAIC at 480V AC. However, the rating increases to 100 kAIC when applied at 240V AC, and decreases to 15 kAIC at 690V AC. Always confirm the available fault current matches your applied voltage.
What are the insulation and impulse withstand voltage ratings for this J-frame breaker?
The 140G-J6F3-D25 has a rated insulation voltage (Ui) of 1000V and a rated impulse withstand voltage (Uimp) of 8 kV. These ratings ensure robust resistance against electrical breakdown and transient voltage spikes in heavy industrial environments.
What do the letters and numbers in the 140G-J6F3-D25 catalog number represent?
The prefix 140G is the series of global molded case circuit breakers. The letter J indicates the 250A frame size. The number 6 denotes the 65 kA interrupting rating at 480V. The letter F represents the adjustable thermal-magnetic trip unit. The number 3 stands for three poles, and D25 signifies the 250A continuous current rating.
Can I use standard wire conductors with the 140G-J6F3-D25?
Yes, but you may need to install external terminal lugs if they are not already fitted. The Allen Bradley J-frame supports a variety of field-installable terminal lugs, allowing you to terminate standard copper or aluminum wire safely.
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