ABB / General ElectricTEF136030
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ABB / General Electric TEF134050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
ABB / General Electric
TEF134050
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
TEF134050
Quantity
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ABB / General Electric TEF134050 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, the GE TEF134050 is a 3-pole, 50A MCCB. It features a robust thermal-magnetic trip unit that provides dependable long-time and instantaneous protection against overloads. This bolt-on breaker installs into legacy GE A-Series panelboards and motor control centers. As an older E-Frame model, it serves as a replacement for existing installations and is superseded by the TED134050. Rated 14 kAIC at 480VAC, it includes TCAL12 lugs for wire termination.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | TEF134050-R |
| Series | TEF |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| 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, Alarm Switch, 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, HID Rated, Reverse Feed, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism |
Product FAQs
6 answersWhat is the direct replacement for the obsolete TEF134050?
The TEF134050 is a legacy E-Frame breaker that has been superseded by the TED134050. The TEF134050 is typically sourced to maintain existing equipment where matching the original physical dimensions and ratings is required.
What equipment is designed to accept the TEF134050 circuit breaker?
This bolt-on molded case circuit breaker is engineered for use in legacy GE A-Series panelboards, GE switchboards, and compatible motor control centers.
What are the wire size limits for the lugs on the TEF134050?
The factory-installed lugs accommodate 14 to 3 AWG copper conductors or 12 to 1 AWG aluminum conductors. Ensure proper torque is applied during installation as specified on the breaker faceplate.
Is the TEF134050 suitable for direct current applications?
Yes, in addition to its 240VAC and 480VAC ratings, this breaker is rated for 250VDC systems, providing a 10kA interrupting capacity for DC power distribution.
Does the TEF134050 offer adjustable trip settings for coordination?
No, it is equipped with a non-interchangeable thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit trip functions are fixed.
What does the LI trip function code indicate on this breaker?
The LI designation means the breaker provides Long-Time (thermal) protection against sustained overloads and Instantaneous (magnetic) protection against short circuits.
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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!