ABB / General Electric TED134150ST12 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Quantity
ABB / General Electric TED134150ST12 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Engineered for commercial applications, the GE TED134150ST12 is a 3-pole molded case circuit breaker from the E150 Line. It provides reliable thermal-magnetic protection for demanding electrical systems. This bolt-on MCCB installs into GE A-Series and Spectra panelboards. It serves as a substitute for the THED134150ST12, offering a seamless fit. Load side lugs are included. Rated for 150A, it features a factory-installed shunt trip and delivers an 18kAIC interrupting rating at 480VAC.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TED134150ST12 |
| Series | TED |
| Amperage | 150A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC, 10kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, GE Spectra Panelboards |
| Wire Gauge | 3 AWG - 3/0 AWG (Cu), 1 AWG - 3/0 AWG (Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 3 AWG (Cu), 1 AWG (Al) |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | HACR, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
10 answersWhat does the "ST12" suffix indicate on the TED134150ST12?
The "ST12" suffix means this breaker includes a factory-installed shunt trip accessory. This allows the breaker to be opened remotely by applying a control voltage of 120-240 VAC or 125 VDC.
What panelboards are compatible with the TED134150ST12?
This E-frame circuit breaker is designed specifically for use in GE A-Series and GE Spectra panelboards.
What wire sizes and materials are accepted by the lugs on this breaker?
The factory-installed lugs accept 3 AWG to 3/0 AWG copper wire, or 1 AWG to 3/0 AWG aluminum wire.
Can the trip settings be adjusted on the TED134150ST12?
No, this breaker features a thermal-magnetic trip unit with fixed thermal and fixed magnetic settings. It provides long-time and instantaneous (LI) protection functions that cannot be field-adjusted.
How is the shunt trip on the TED134150ST12 typically utilized?
The factory-installed ST12 shunt trip is commonly used for emergency shutdown systems, remote equipment isolation, or interlocking schemes where a remote signal must disconnect power.
Is the TED134150ST12 an interchangeable trip breaker?
No, GE TED series breakers feature non-interchangeable trip units. The 150A thermal-magnetic trip unit is permanently installed and cannot be swapped for a different amperage rating.
What is the frame size of the TED134150ST12?
This breaker belongs to the GE E150 Line and is built on the standard E-Frame. It shares the same physical footprint and mounting requirements as other TEB, TEC, and THED breakers.
Can I install this breaker in a Q-Line load center?
No, the TED134150ST12 is an E-Frame molded case circuit breaker designed for commercial panelboards like the A-Series and Spectra lines. It will not fit in standard residential Q-Line load centers.
Does this breaker provide ground fault protection?
No, the TED134150ST12 provides standard thermal-magnetic protection against overloads and short circuits via its long-time and instantaneous (LI) functions. It does not include integral ground fault equipment protection.
Will my breaker be branded as GE or ABB?
Because ABB acquired GE Industrial Solutions, you may receive a breaker with either GE or ABB branding depending on the manufacturing date. The physical dimensions, fit, and electrical specifications remain identical regardless of the label.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 34 reviews.
- RMRyan M.Verified BuyerReviewingABB / General Electric TED134040WL - 40A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars8/19/26Exceptional
Great prices, fast delivery
- CPCODY P.Verified BuyerReviewingABB / General Electric TED134150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/31/26Breakers
Exactly what I ordered very prompt delivery it was a job we needed done fast and they had the product at a fair price
- MTMike T.Verified BuyerReviewingABB / General Electric TED134050WL - 50A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/13/26Breaker Order
Breaker came in fast and looks great thanks.
- BGBob G.Verified BuyerReviewingABB / General Electric TED134070WL - 70A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/30/26Perfect fit in an old (50 years) GE panel.
We removed an un-used breaker and installed, this one, within 10 minutes.
- CECoy E.Verified BuyerReviewingABB / General Electric TED134030WL - 30A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars6/10/26worked as needed
breaker came sealed and in great condition.