ABB / General Electric THJK436400WL Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THJK436400WL - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
Quantity
ABB / General Electric THJK436400WL - 400A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THJK436400WL |
| Series | THJK |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 20kA @ 500VDC |
| Frame Type | TJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE J600 Enclosures, GE A-Series Panelboards, GE Switchboards, GE Motor Control Centers |
| Wire Gauge | (1) 6 AWG - 600 kcmil (Cu/Al) or (2) 2/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 600 kcmil |
| Min Wire | 6 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs (TCAL43) |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip Unit, Reverse Feed, Trip-Free Mechanism |
Quantity
ABB / General Electric THJK436400WL - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THJK436400WL-R |
| Series | THJK |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 20kA @ 500VDC |
| Frame Type | TJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE J600 Enclosures, GE A-Series Panelboards, GE Switchboards, GE Motor Control Centers |
| Wire Gauge | (1) 6 AWG - 600 kcmil (Cu/Al) or (2) 2/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 600 kcmil |
| Min Wire | 6 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs (TCAL43) |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip Unit, Reverse Feed, Trip-Free Mechanism |
Description
Supplied with TCAL43 line and load lugs, the THJK436400WL is a 400A, 3-pole molded case circuit breaker from GE's J600 line. It is built to handle heavy-duty industrial electrical loads. This unit-mount MCCB is compatible with GE A-Series panelboards, switchboards, and motor control centers. While eventually replaced by the Tmax XT5 series, it remains a seamless fit for existing J-Frame infrastructure. It features an interchangeable thermal-magnetic trip unit and delivers 35 kAIC at 480VAC.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THJK436400WL |
| Series | THJK |
| Amperage | 400A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 20kA @ 500VDC |
| Frame Type | TJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE J600 Enclosures, GE A-Series Panelboards, GE Switchboards, GE Motor Control Centers |
| Wire Gauge | (1) 6 AWG - 600 kcmil (Cu/Al) or (2) 2/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 600 kcmil |
| Min Wire | 6 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, Alarm Switch |
|---|---|
| Accessories | Line and Load Lugs (TCAL43) |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip Unit, Reverse Feed, Trip-Free Mechanism |
Product FAQs
5 answersWhich panelboards and enclosures are compatible with the THJK436400WL?
This J-frame breaker is designed for use in GE A-Series panelboards, GE switchboards, GE motor control centers, and GE J600 enclosures. Verify specific bus and mounting hardware requirements for your application.
What does the WL suffix in the THJK436400WL catalog number indicate?
The WL suffix indicates that the breaker is supplied with factory-installed line and load lugs. These lugs accept either one 6 AWG to 600 kcmil conductor or two 2/0 AWG to 250 kcmil conductors per phase.
How is the trip unit configured on this TJK frame breaker?
It features a thermal-magnetic trip unit with fixed thermal protection for long-time overloads and an adjustable magnetic dial for instantaneous short-circuit protection. This allows electricians to fine-tune the instantaneous trip threshold to coordinate with downstream devices.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. The THJK436400WL is part of the legacy GE J-frame molded case circuit breaker line. New production units may carry ABB branding while maintaining exact form, fit, and function.
Are the factory lugs rated for both copper and aluminum conductors?
Yes, the included lugs are dual-rated for both copper (Cu) and aluminum (Al) wire. Ensure proper application of oxide-inhibiting joint compound when terminating aluminum conductors.
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