ABB / General ElectricTHEF136040
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ABB / General Electric THEF136050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
ABB / General Electric
THEF136050
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THEF136050
Quantity
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ABB / General Electric THEF136050 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Built for commercial applications, the THEF136050 is a 3-pole, 50A molded case circuit breaker from the legacy TEF series. It provides essential thermal-magnetic protection with fixed long-time and instantaneous trip functions. Engineered for seamless integration, this breaker installs into GE A-Series panelboards and switchboards. It serves as a replacement for existing setups, though the THED136050 is its modern substitute. The breaker boasts a 65kAIC rating at 240V and supports reverse feed.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THEF136050-R |
| Series | THEF |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | THEF |
|---|---|
| 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 |
| Min Wire | 14 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, Alarm Switch, Padlock Attachment, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Quick-Make/Quick-Break, Trip-Free Mechanism, Common Trip, Reverse Feed |
Product FAQs
6 answersWhich panelboards and enclosures are compatible with the THEF136050?
This E-frame breaker is designed for use in GE A-Series panelboards, GE switchboards, and motor control centers. It requires a bolt-on mounting configuration to connect directly to the bus system.
What are the acceptable wire gauges for the terminals on this breaker?
The factory-installed lugs accept 14 to 3 AWG copper (Cu) conductors or 12 to 1 AWG aluminum (Al) conductors. Always verify that the conductor material matches the appropriate gauge range before terminating.
Is the THEF136050 suitable for direct current (DC) applications?
Yes, this thermal-magnetic breaker is rated for up to 250VDC with an interrupting capacity of 10kAIC, making it suitable for specific industrial DC control circuits and equipment.
Are the trip settings adjustable on this 50A breaker?
No, the THEF136050 features a fixed thermal and fixed magnetic trip unit. The long-time (overload) and instantaneous (short-circuit) protection functions are factory-set and cannot be field-adjusted.
Why might this breaker be labeled under ABB instead of General Electric?
ABB acquired GE Industrial Solutions in 2018. As a result, legacy GE molded case circuit breakers like the THEF frame series may arrive with either GE or ABB branding, but they are physically and electrically identical.
Does this breaker require a specific mounting hardware kit?
Because it is a bolt-on breaker, it requires appropriate mounting screws to secure the line-side connections to the panelboard bus. Check your specific A-Series panelboard or switchboard documentation for the correct hardware kit if it is not already present on the chassis.
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