ABB / General Electric THK4VF Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THK4VF - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the GE K-Frame series, the THK4VF is a 3-pole, 1200A molded case circuit breaker for industrial applications. It delivers reliable power distribution for heavy-duty systems. This unit mounts into GE switchboards, motor control centers, and K-Frame enclosures. It serves as a replacement for older installations and is superseded by the SKHA36AT1200. Equipped with a MicroVersaTrip solid-state trip unit, it provides adjustable LI protection and a 50kAIC rating at 480VAC.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THK4VF-R |
| Series | THK |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 50kA @ 480VAC, 25kA @ 600VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE Switchboards, Motor Control Centers, K-Frame Enclosures |
| Wire Gauge | (4) 250-350 kcmil Cu or (4) 250-500 kcmil Al |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| Trip Technology | Electronic Trip |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Adjustable |
| Trip Unit Model | MicroVersaTrip |
| Available Options | Lugs, Rating Plugs, Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Lug Kits |
|---|---|
| Accessories | Lugs, Auxiliary Switch, Shunt Trip, Undervoltage Release, Alarm Switch |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Solid State Trip Unit, Interchangeable Trip Unit |
Product FAQs
6 answersWhat types of equipment is the THK4VF circuit breaker compatible with?
The THK4VF is designed for use in GE switchboards, motor control centers, and K-Frame enclosures.
What are the acceptable wire sizes and materials for the lugs on the THK4VF?
The lugs accept either four 250 to 350 kcmil copper wires or four 250 to 500 kcmil aluminum wires per phase.
What does the LI trip function on the THK4VF indicate?
The LI designation means this electronic trip breaker features adjustable Long-Time and Instantaneous protection settings. This allows you to customize the trip curve for your specific application.
How is the THK4VF breaker mounted within an enclosure?
This is a unit mount, bolt-on circuit breaker. It bolts directly to the bus or mounting pan rather than plugging into a chassis.
Is there a modern replacement for the legacy THK4VF circuit breaker?
Yes, the THK4VF is a legacy K-Frame breaker that is superseded by the SKHA36AT1200. However, the THK4VF remains available for direct replacement in older installations.
Why is the THK4VF listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. Depending on the manufacturing date, this breaker may feature either GE or ABB branding, but the physical specifications and compatibility remain identical.
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