ABB / General Electric TFL236125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric TFL236125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed for GE A-Series panelboards, this 125A molded case circuit breaker delivers robust power distribution. The 3-pole unit ensures reliable performance in industrial facilities. It features a unit-mount configuration for secure installation. This F-Frame model is replaced by the XT4HU3125BFF000XXX when paired with proper mounting adapters. Equipped with thermal magnetic trip units, it delivers LI protection. The current-limiting design boasts a 65kAIC rating at 480VAC.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TFL236125-R |
| Series | TFL |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 100kA @ 240VAC, 65kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Lug Kits |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, HACR Rated, Reverse Feed, Common Trip, Trip-Free Mechanism |
Product FAQs
10 answersWhich enclosures are compatible with the TFL236125 circuit breaker?
This F-Frame breaker is designed for installation in GE A-Series panelboards, as well as compatible GE switchboards and motor control centers.
Can the TFL236125 be utilized in DC power systems?
Yes, this breaker is rated for direct current applications up to 250VDC with a 10kA interrupting capacity, making it suitable for specific industrial control and battery backup systems.
What does the LI trip function on the TFL236125 indicate?
The LI designation means this thermal magnetic breaker includes Long-Time and Instantaneous trip functions to protect against both sustained overloads and sudden short circuits.
Is the trip unit on this GE F-Frame breaker adjustable?
The thermal protection is fixed, but the magnetic instantaneous trip is adjustable. This allows electricians to fine-tune the response to short circuits based on the specific load characteristics.
How does the interrupting capacity scale with system voltage on this model?
The breaker provides a maximum interrupting rating of 100kA at 240VAC. This capacity scales down as voltage increases, offering 65kA at 480VAC and 25kA at 600VAC.
What wire sizes and materials are accepted by the lugs on the TFL236125?
The factory-installed load side lugs accept both copper and aluminum conductors ranging from 4 AWG up to 300 kcmil.
How is the TFL236125 mounted inside a panelboard?
This is a unit mount, bolt-on circuit breaker. It secures directly to the chassis or mounting pan of the panelboard or switchboard using mechanical fasteners rather than plugging onto a busbar.
Why is verifying the available fault current critical before installing this breaker?
Installing a breaker with an interrupting capacity lower than the available fault current can result in catastrophic failure during a fault event. Always ensure the system fault current does not exceed the breaker ratings at your specific voltage.
Are there special termination requirements when using aluminum wire with this breaker?
Yes, when terminating aluminum conductors in the mechanical lugs, an approved oxide-inhibiting joint compound must be applied to prevent corrosion and ensure a safe, low-resistance connection.
Is the TFL236125 part of a current GE production line?
No, this model belongs to the GE legacy molded case circuit breaker family. It is typically sourced to replace existing units or maintain older F-Frame installations without requiring a complete panel upgrade.
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