ABB / General Electric TB43150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Quantity
ABB / General Electric TB43150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the Tri-Break family, the GE TB43150 delivers 150A of robust current-limiting protection for industrial environments. This 3-pole molded case circuit breaker is internally fused to handle high-fault conditions safely. This bolt-on MCCB installs into compatible GE Tri-Break panelboards, switchboards, and motor control centers. Rated for an exceptional 200 kAIC at 600VAC, it provides superior short-circuit protection. Current limiters are required but not included.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TB43150-R |
| Series | TB4 |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 200kA @ 240VAC, 200kA @ 480VAC, 200kA @ 600VAC |
| Frame Type | TB4 |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE Tri-Break Panelboards, GE Switchboards, Motor Control Centers |
| Wire Gauge | 6 AWG - 600 kcmil (Al/Cu) or (2) 2/0 AWG - 250 kcmil (Al/Cu) |
| 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 | Auxiliary Switch, Shunt Trip, Undervoltage Release, Lug Kits, Current Limiters |
|---|---|
| Accessories | Lugs Not Included, Current Limiters Not Included |
| Standards | NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Current Limiting, Internally Fused, Interchangeable Trip |
| Special Features | Integrally Fused |
Product FAQs
5 answersCan I install the TB43150 in a standard GE A-Series panelboard?
No, the TB43150 is part of the Tri-Break family and features a specific bolt-on frame. It is designed exclusively for GE Tri-Break Panelboards, GE Switchboards, and Motor Control Centers. It will not fit standard A-Series or Spectra series chassis.
What are the acceptable wire sizes for the terminal lugs on the TB43150?
The standard lugs on this breaker accept a single conductor ranging from 6 AWG up to 600 kcmil for both Aluminum and Copper wire. Alternatively, they can accept dual conductors ranging from 2/0 AWG to 250 kcmil (Al/Cu).
How is the trip unit configured on the TB43150?
This breaker features a thermal-magnetic trip unit with Long-Time and Instantaneous (LI) functions. The thermal overload protection is fixed at 150A, while the magnetic instantaneous trip is adjustable, allowing electricians to coordinate with downstream loads or account for motor inrush currents.
What applications require the 200kAIC rating of the TB43150?
The 200kAIC interrupting capacity at up to 600VAC makes this breaker suitable for heavy industrial applications, switchgear, and motor control centers located near large transformers where available fault currents are exceptionally high.
Why is this breaker listed as both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. As a result, Tri-Break series breakers like the TB43150 may be branded as either GE or ABB depending on the date of manufacture. Both versions are physically and electrically identical.
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