ABB / General Electric TEY270ST12 Miniature Circuit Breaker
- 70A
- 2 Pole
- Bolt-On
Quantity
ABB / General Electric TEY270ST12 - 70A 2 Pole Miniature Circuit Breaker
New
Quantity
Description
Incorporating advanced control capabilities, this 70A miniature circuit breaker features a factory-installed shunt trip mechanism for remote actuation. The device fastens securely into GE A-Series lighting panelboards via a standard bolt-on connection, ensuring reliable integration into commercial systems. Operating at 120 to 277VAC, the shunt trip accessory expands functionality while the core breaker maintains a robust 65kAIC rating at 240VAC for superior safety.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TEY270ST12 |
| Series | TEY |
| Amperage | 70A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 120VAC, 240VAC, 480Y/277VAC, 250VDC, 120/240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 120VAC, 65kA @ 240VAC, 14kA @ 480Y/277VAC, 10kA @ 250VDC, 65kA @ 120/240VAC |
| Frame Type | TEY |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE A-Series Lighting Panelboards |
| Wire Gauge | 4 AWG - 1/0 AWG (Cu/Al) |
| Max Wire | 1/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Auxiliary Switch, Undervoltage Release, Bell Alarm, Handle Lock |
|---|---|
| Accessories | Shunt Trip (Factory Installed), Load Side Lugs Included |
| Standards | CSA C22.2 No. 5.1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Quick-Make/Quick-Break, Non-Interchangeable Trip |
Product FAQs
8 answersWhat does the ST12 suffix indicate on the TEY270ST12 breaker?
The ST12 suffix designates that this breaker is equipped with a factory-installed 120V AC shunt trip accessory. This allows the breaker to be opened remotely when a 120V control signal is applied.
Which panelboards are compatible with the TEY270ST12?
This bolt-on miniature circuit breaker is designed specifically for use in GE and ABB A-Series lighting panelboards. It mounts directly to the panelboard bus using a bolted connection.
Can I install this TEY breaker in a standard GE Powermark Gold load center?
No. TEY series breakers feature a bolt-on connection designed for commercial A-Series panelboards. Powermark Gold residential load centers require plug-in THQL or THQP style breakers.
How is the 120V shunt trip wired during installation?
The factory-installed shunt trip includes pigtail leads that exit the breaker housing. These leads must be routed and connected to an external 120V AC control circuit, such as a fire alarm relay or emergency stop system, to enable remote tripping capabilities.
Is the TEY270ST12 rated for use in direct current applications?
Yes, in addition to its standard AC ratings, this thermal-magnetic breaker is rated for DC circuits. It provides an interrupting capacity of 10kA at 250V DC.
Can I add auxiliary switches to this breaker in the field?
The TEY270ST12 already occupies internal space with its factory-installed shunt trip. For TEY frame breakers, internal accessories like shunt trips or auxiliary contacts must generally be factory installed and cannot be added or modified in the field.
Are the trip settings on this 70A breaker adjustable?
No, it features a fixed thermal-magnetic trip unit providing long-time and instantaneous (LI) protection. The trip curve and thresholds are factory calibrated and cannot be adjusted by the user.
Are the terminal lugs rated for aluminum conductors?
Yes, the standard lugs on this breaker accept both copper (Cu) and aluminum (Al) wire. When terminating aluminum conductors, ensure proper torque specifications are followed and an approved oxide-inhibiting joint compound is applied.
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Reviews
Review summary
Customers rate this product 4.9 out of 5 based on 43 reviews.
- SAShaenon A.Verified BuyerReviewingGeneral Electric TEYL1030B 1 Pole Circuit BreakerI recommend this productRated 5 out of 5 stars9/21/26Everything was great!
Super easy and love the options and simple descriptions! Reasonable pricing too will ensure we are a reoccurring customer!
- MJmartin j.Verified BuyerReviewingABB / General Electric TEY320 - 20A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/26/26breaker replacement
fast service and great pricing .. Had this business up and running in No time ,, highly recommend SB
- CMCharles M.Verified BuyerReviewingABB / General Electric TEY320 - 20A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars6/4/26Just what I needed.
Received as advertised, and at a good price on time. Very satisfied.
- AMAlex M.Verified BuyerReviewingABB / General Electric TEY340 - 40A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars5/12/26SuperBreakers are great.
Another breaker ordered. Arrived on time and fulfilled.
- AMAlex M.Verified BuyerReviewingABB / General Electric TEY130 - 30A 1 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars5/12/26Breaker Ordered
Shipped correctly and on time. We will continue to use SuperBreakers!