ABB / General Electric THJK636450WL Molded Case Circuit Breaker
- 450A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THJK636450WL - 450A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for industrial power distribution, the THJK636450WL is a 3-pole, 450A unit mount molded case circuit breaker from GE's J600 line. It delivers reliable long-time and instantaneous (LI) protection for demanding electrical systems. This J-frame breaker installs into GE J600 enclosures, switchboards, and motor control centers. It includes line and load lugs accepting up to 500 kcmil aluminum wire. Rated for 35 kAIC at 480V, this Hi-Break unit features an interchangeable trip unit.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THJK636450WL |
| Series | THJK |
| Amperage | 450A |
| 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 | THJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE J600 Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | (2) 4/0 AWG - 350 kcmil (Cu) or (2) 300 - 500 kcmil (Al) |
| Max Wire | 500 kcmil |
| Min Wire | 4/0 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs Included |
| 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, Common Trip, Trip-Free Mechanism, HACR Rated |
Product FAQs
7 answersWhat wire sizes are accepted by the lugs on the THJK636450WL?
The factory-installed lugs accept either two 4/0 AWG to 350 kcmil copper conductors or two 300 to 500 kcmil aluminum conductors per phase.
What does the WL suffix indicate in the THJK636450WL catalog number?
The WL suffix indicates that the circuit breaker comes with factory-installed wire lugs on both the line and load sides.
Which enclosures are compatible with the THJK636450WL circuit breaker?
This J-frame breaker is designed for use in GE J600 series enclosures, as well as compatible switchboards and motor control centers.
Is the trip unit on the THJK636450WL adjustable?
Yes, it features a thermal-magnetic trip unit with fixed thermal (long-time) protection and an adjustable magnetic (instantaneous) trip setting.
Can the trip unit be swapped out on this breaker?
Yes, the THJK636450WL features an interchangeable trip unit design, allowing the trip mechanism to be replaced or upgraded without replacing the entire breaker frame.
Can the THJK636450WL be used in DC electrical systems?
Yes, this breaker is rated for DC applications, providing an interrupting capacity of 40kA at 250VDC and 20kA at 500VDC.
How is the THJK636450WL mounted?
It is a unit-mount, feed-thru circuit breaker designed to be bolted directly into compatible distribution panels, switchboards, or standalone enclosures.
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