ABB / General ElectricTEF134050
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ABB / General Electric TEF124050 Molded Case Circuit Breaker
- 50A
- 2 Pole
- Bolt-On
ABB / General Electric
TEF124050
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
TEF124050
Quantity
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ABB / General Electric TEF124050 - 50A 2 Pole Molded Case Circuit Breaker
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ABB / General ElectricTED124050
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50A 2 Pole Molded Case Circuit Breaker
Description
Rated at 14 kAIC for 480V systems, this two-pole molded case breaker delivers consistent overcurrent protection for industrial facilities. The unit mounts into legacy GE A-Series panelboards and motor control centers using a secure bolt-on configuration. Often replaced by the newer TED124050, this original TEF series component maintains compatibility with older setups. It comes equipped with factory-installed TCAL12 lugs accepting 14-3 AWG copper or 12-1 AWG aluminum wiring.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TEF124050-R |
| Series | TEF |
| Amperage | 50A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Frame Type | TEF |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE A-Series Panelboards, GE Switchboards, Motor Control Centers |
| Wire Gauge | 14-3 AWG (Cu), 12-1 AWG (Al) |
| Max Wire | 3 AWG (Cu), 1 AWG (Al) |
| Min Wire | 14 AWG (Cu), 12 AWG (Al) |
| 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, Lug Kit (TCAL12) |
|---|---|
| Accessories | Lugs Included (TCAL12) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Common Trip, Non-Interchangeable Trip, Quick-Make/Quick-Break |
Product FAQs
6 answersWhat types of panels and equipment are compatible with the TEF124050?
The TEF124050 is designed for use in legacy GE A-Series panelboards, GE switchboards, and motor control centers that accept E-Frame bolt-on breakers.
What wire sizes and materials are accepted by the lugs on the TEF124050?
This breaker comes equipped with lugs that accept 14 to 3 AWG copper (Cu) wire or 12 to 1 AWG aluminum (Al) wire.
Can the TEF124050 be used in direct current (DC) applications?
Yes, this thermal magnetic breaker is rated for DC use, providing an interrupting capacity of 10kA at 250VDC.
Is there a newer direct replacement for the legacy TEF124050?
Yes, the TEF124050 is an older E-Frame breaker that is often directly replaced by the newer TED124050. The TED124050 maintains the same physical footprint and bolt-on configuration for legacy setups.
Are the trip settings adjustable on the TEF124050?
No, this breaker features fixed thermal and fixed magnetic trip settings for its long-time and instantaneous (LI) trip functions.
Does the TEF124050 provide ground fault or arc fault protection?
No, this is a standard thermal magnetic circuit breaker. It provides standard overload and short-circuit protection but does not include GFCI or AFCI capabilities.
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Reviews
Review summary
Customers rate this product 4.5 out of 5 based on 2 reviews.
Total 5 star reviews: 1 Total 4 star reviews: 1 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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Rating
2 reviews
- PEPreferred E.Verified BuyerReviewingABB / General Electric TEF134100 - 100A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars7/27/26Breaker is in great shape
Professional operation for description and delivery. SuperBreakers is our go to for all breakers!
- CMCalvin M.Verified BuyerReviewingABB / General Electric TEF113020 - 20A 1 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars6/30/26Lifesavers
We repair a lot of old electrical systems that require old breakers. Superbreakers haven't let us down yet. Their response time and delivery time is great! They have been lifesavers!