ABB / General Electric TJK426350 Molded Case Circuit Breaker
- 350A
- 2 Pole
- Unit Mount
Quantity
ABB / General Electric TJK426350 - 350A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Operating within a 600VAC maximum threshold, this 350-amp molded case circuit breaker delivers essential thermal-magnetic protection for facility infrastructure. The two-pole mechanism is housed in a three-pole frame, featuring an interchangeable trip unit to accommodate changing load requirements. This component mounts into GE A-Series and J600 panelboards, providing a critical replacement solution for aging electrical systems. It accepts 6 AWG to 600 kcmil wiring via standard terminal lugs.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TJK426350-R |
| Series | TJK |
| Amperage | 350A |
| Poles | 2 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 42kA @ 240VAC, 30kA @ 480VAC, 22kA @ 600VAC, 20kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE J600 Panelboards, Switchboards, 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, Lug Kits |
|---|---|
| Accessories | Lugs (TCAL43) |
| Standards | CSA C22.2 No. 5, UL 489, NEMA AB 1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Interchangeable Trip Unit, 2-Pole in 3-Pole Housing |
Product FAQs
6 answersWhich panelboards are compatible with the TJK426350 circuit breaker?
This J-Frame breaker is designed for use in GE A-Series panelboards, GE J600 panelboards, switchboards, and motor control centers. It utilizes a standard bolt-on mounting configuration.
What are the accepted wire sizes for the load side lugs on this breaker?
The standard load lugs accept either a single conductor from 6 AWG to 600 kcmil or two conductors ranging from 2/0 AWG to 250 kcmil. Both copper and aluminum wires are supported.
How does the trip unit function on the TJK426350?
It features an interchangeable thermal magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal element is fixed for standard overload protection, while the magnetic instantaneous trip is adjustable to help coordinate with downstream devices or handle specific motor inrush currents.
Can the trip unit be replaced in the field?
Yes, the TJK426350 features an interchangeable trip unit design. This allows electricians to swap the trip unit to modify the amperage rating without replacing the entire breaker frame, provided the new trip unit is compatible with the J600 series frame.
Is the TJK426350 suitable for direct current applications?
Yes, this breaker is rated for use in DC systems up to 250VDC, providing an interrupting capacity of 20kA for specific DC distribution or battery system requirements.
What is the difference between the TJK426350 and the THJK426350?
The TJK426350 is the standard interrupting capacity version. The THJK426350 is the high interrupting capacity alternative for systems requiring a higher fault current rating. Both share the same J600 frame footprint and mounting hardware.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
- BRBrian R.ReviewingGeneral Electric TJK636F000 Circuit Breaker FrameI recommend this productRated 5 out of 5 stars11/23/20600 AMp breaker
Excellent Price, Excellent Service, speedy delivery!
- JTJames T.ReviewingGeneral Electric TJK636F000 Circuit Breaker FrameI recommend this productRated 5 out of 5 stars8/16/20Replacement breaker needed!
As usual ....the folks at Superbreakers delivered on their promise.
- JMJohn M.ReviewingABB / General Electric TJK636300WL - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars10/4/17Dolphins Car Wash
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