ABB / General ElectricTEYF3100
ABB / General Electric TEYF3125B Miniature Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
ABB / General Electric
TEYF3125B
Miniature Circuit Breaker
Brand
ABB / General Electric
SKU
TEYF3125B
Quantity
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ABB / General Electric TEYF3125B - 125A 3 Pole Miniature Circuit Breaker
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Description
Built for robust power distribution, the GE TEYF3125B is a 3-pole, 125A miniature circuit breaker. It utilizes thermal-magnetic trip elements to deliver reliable protection for commercial facilities. Designed as a bolt-on device, it mounts into GE A-Series lighting panelboards. The breaker accommodates 4 to 2/0 AWG conductors through its load-side lugs. With an 18 kAIC rating at 480Y/277V, this Q-Line breaker features a quick-make/quick-break mechanism. It is also HACR rated for HVAC systems.Specifications
| Brand | ABB / General Electric |
|---|---|
| Series | TEYF |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 277VAC, 480Y/277VAC, 250VDC, 120/240VAC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 18kA @ 277VAC, 18kA @ 480Y/277VAC, 10kA @ 250VDC, 65kA @ 120/240VAC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Lighting Panelboards |
| Wire Gauge | 4 AWG - 2/0 AWG (Cu/Al) |
| Max Wire | 2/0 AWG |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Bell Alarm, Padlock Attachment, Handle Lock |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5.1, UL 489 |
| Approval | CSA, HACR, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Quick-Make/Quick-Break, Common Trip, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
6 answersWhich panelboards are compatible with the TEYF3125B circuit breaker?
This breaker is designed specifically for use in GE A-Series lighting panelboards. It features a bolt-on connection to secure directly to the panel bus.
What are the acceptable wire sizes and materials for the lugs on this breaker?
The factory-installed lugs accept wire gauges from 4 AWG up to 2/0 AWG. They are rated for both copper (Cu) and aluminum (Al) conductors.
How does the interrupting rating differ between 240V and 480Y/277V systems?
The TEYF3125B provides a 65kAIC rating at 240V AC and 120/240V AC. For 480Y/277V AC systems, the interrupting capacity is 18kAIC.
Is the TEYF3125B rated for use in DC circuits?
Yes, this thermal-magnetic breaker is rated for DC applications, providing a 10kAIC interrupting rating at 250V DC.
Are the thermal and magnetic trip settings adjustable on the TEYF3125B?
No, this breaker features a fixed thermal and fixed magnetic trip unit providing standard long-time and instantaneous (LI) protection. The trip points cannot be field-adjusted.
What is the difference between a standard TEY and the TEYF circuit breaker?
The primary difference is the interrupting rating at 480Y/277V AC. Standard TEY breakers are rated at 14kAIC, while the TEYF series provides a higher 18kAIC rating at 480Y/277V AC.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 2 reviews.
Total 5 star reviews: 2 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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2 reviews
- ACAlice C.Verified BuyerReviewingABB / General Electric TEYF350 - 50A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars7/17/26NA
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- MNMaxam N. A. I.Verified BuyerReviewingABB / General Electric TEYF370 - 70A 3 Pole Miniature Circuit BreakerI recommend this productRated 5 out of 5 stars8/4/25Best Pricing
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