ABB / General Electric TJJ426300 Molded Case Circuit Breaker
- 300A
- 2 Pole
- Bolt-On
Quantity
ABB / General Electric TJJ426300 - 300A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed for heavy-duty industrial applications, this 300-amp molded case circuit breaker utilizes a two-pole configuration within a standard three-pole J-Frame housing. It installs into GE A-Series panelboards, Spectra switchboards, and motor control centers. The unit features a fixed thermal and adjustable magnetic trip mechanism, allowing precise coordination for commercial loads. It carries a robust 42kAIC rating at 240VAC and includes load-side TCAL43 lugs for immediate wiring.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TJJ426300-R |
| Series | TJJ |
| Amperage | 300A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| 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 Spectra 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included (TCAL43) |
| Standards | UL 489, NEMA AB-1 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, 2-Pole in 3-Pole Housing |
Product FAQs
6 answersWhat equipment is compatible with the TJJ426300 circuit breaker?
This J-frame breaker is designed for use in GE A-Series panelboards, GE Spectra switchboards, and GE motor control centers.
What wire sizes do the included load side lugs accept?
The terminals accommodate either one 6 AWG to 600 kcmil copper or aluminum conductor, or two 2/0 AWG to 250 kcmil copper or aluminum conductors.
Is the trip unit on the TJJ426300 adjustable?
Yes, it features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection.
Can the TJJ426300 be reverse fed?
Yes, this breaker is suitable for reverse feed applications, allowing it to be wired with the supply connections on either the top or bottom terminals.
Is this breaker rated for direct current systems?
Yes, it is rated for use in DC applications up to 250VDC, providing an interrupting capacity of 20kA.
What type of protection does the LI trip function provide?
The LI designation indicates it provides Long-Time protection against sustained overloads and Instantaneous protection against severe short circuits.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- MWMichael W.Verified BuyerReviewingABB / General Electric TJJ436300WL - 300A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/28/25TJJ436300WL 3 Pole Circuit Breaker
Great fast shipping on many orders we have placed with Super Breakers, a very good reliable disturber for our business.