ABB / Thomas & Betts TBBJ3175 Molded Case Circuit Breaker
- 175A
- 3 Pole
- Plug-On
Quantity
ABB / Thomas & Betts TBBJ3175 - 175A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Operating at 240VAC, the ABB TBBJ3175 delivers essential thermal-magnetic protection for commercial and industrial applications. This 3-pole, 175A molded case circuit breaker features a common trip mechanism and a visual trip indicator for quick diagnostics. It utilizes a plug-on mounting style that fits seamlessly into Thomas & Betts, Bryant, Westinghouse, and standard Type BR load centers. Electrical contractors frequently use this model to replace legacy BJ3175 main breakers.Specifications
| Brand | ABB / Thomas & Betts |
|---|---|
| Part Number | TBBJ3175 |
| Series | TBBJ |
| Amperage | 175A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 10kA @ 240VAC |
| Terminal Type | Box Lugs |
|---|---|
| For Use With | Thomas & Betts Load Centers, Type BR Load Centers, Bryant Load Centers, Westinghouse Load Centers |
| Wire Gauge | 2 AWG - 300 kcmil (Al/Cu) |
| Max Wire | 300 kcmil |
| Min Wire | 2 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Accessories | Load Side Lugs Included |
|---|---|
| Standards | CSA C22.2 No. 5, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Main Breaker, Quick-Make/Quick-Break, Trip-Free Mechanism, Visual Trip Indicator |
Product FAQs
7 answersWhich load centers are compatible with the TBBJ3175 breaker?
This plug-on breaker is compatible with Thomas & Betts load centers, as well as Eaton Type BR, Bryant, and Westinghouse panels designed to accept J-Frame breakers.
What is the direct cross-reference for the Thomas & Betts TBBJ3175?
The TBBJ3175 is an exact equivalent to the Eaton or Cutler-Hammer BJ3175. Both are 175-amp, 3-pole plug-on breakers that fit the same style of load centers.
What wire sizes and materials can be used with the TBBJ3175 terminals?
The factory-installed box lugs accept either copper or aluminum conductors ranging from 2 AWG up to 300 kcmil.
How does the thermal-magnetic trip unit operate on this breaker?
The trip unit provides fixed long-time protection against gradual overloads and fixed instantaneous protection against severe short circuits.
Does the TBBJ3175 require bolt-on hardware for installation?
No. This is a plug-on circuit breaker that connects directly to the bus stabs of a compatible load center, eliminating the need for mounting bolts.
How do I reset the TBBJ3175 after it has tripped?
When a fault occurs, the handle moves to a center tripped position. To restore power after clearing the fault, push the handle firmly to the off position, then pull it back to the on position.
Does this 3-pole breaker have a common trip feature?
Yes. If an overload or short circuit is detected on any individual phase, the internal mechanism will trip all three poles simultaneously to completely disconnect the circuit.
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