ABB / General ElectricTHEF126040
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ABB / General Electric THEF126100 Molded Case Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
ABB / General Electric
THEF126100
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THEF126100
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ABB / General Electric THEF126100 - 100A 2 Pole Molded Case Circuit Breaker
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Description
The THEF126100 is a 2-pole, 100A molded case circuit breaker from GE's legacy E-Frame series. It provides reliable thermal-magnetic protection for commercial power distribution. This unit mounts into GE A-Series panelboards and switchboards via a bolt-on connection. For facilities replacing older hardware, it is superseded by the THED126100. Rated for 65kAIC at 240V, it handles high fault currents and offers fixed trip settings for consistent long-time and instantaneous protection.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THEF126100-R |
| Series | THEF |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| 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 | 3-3/0 AWG (Cu), 1-3/0 AWG (Al) |
| Max Wire | 3/0 AWG |
| Min Wire | 3 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 |
|---|---|
| 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, Common Trip |
Product FAQs
6 answersWhat panelboards accept the THEF126100 circuit breaker?
This E-frame breaker is designed for bolt-on installation in GE A-Series panelboards, GE switchboards, and compatible motor control centers.
Why is the THEF126100 listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. The THEF126100 is originally a GE design, but new production and support are now managed under the ABB brand. Both names refer to the exact same E-frame breaker.
Can I use the THEF126100 in a standard residential load center?
No, this is a bolt-on molded case circuit breaker designed for commercial and industrial A-Series panelboards or switchboards. It will not fit in standard residential plug-on or Q-Line load centers.
Does the THEF126100 have adjustable trip settings?
No, this breaker features a fixed thermal and fixed magnetic trip unit. The long-time and instantaneous protection parameters are factory set for 100 amps and cannot be modified in the field.
Is the THEF126100 suitable for direct current (DC) systems?
Yes, this thermal-magnetic breaker is rated for DC applications up to 250VDC, providing a 10kA interrupting capacity for DC circuits.
What type of wire is approved for the THEF126100 lugs?
The factory lugs accept both copper and aluminum conductors. Use 3 AWG to 3/0 AWG for copper wire, or 1 AWG to 3/0 AWG for aluminum wire. Ensure conductors are sized appropriately for the 100A rating.
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