ABB / General ElectricTHFK236125
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ABB / General Electric THFK236070 Molded Case Circuit Breaker
- 70A
- 3 Pole
- Bolt-On
ABB / General Electric
THFK236070
Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THFK236070
Quantity
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ABB / General Electric THFK236070 - 70A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for high-capacity commercial environments, this 70-amp thermal-magnetic breaker delivers reliable LI protection. The bolt-on configuration fits seamlessly into GE A-Series panelboards and motor control centers. With a robust 65kAIC rating at 240VAC and HACR certification, it meets stringent industrial demands. This F-Frame model serves as a dependable replacement option for facilities maintaining existing infrastructure prior to transitioning to the newer ABB Tmax XT4 series.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THFK236070 |
| Series | THFK |
| Amperage | 70A |
| 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 | TFK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE A-Series Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 300 kcmil (Cu/Al) |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs (TCAL24) |
| Standards | CSA C22.2 No. 5, HACR Rated, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip, High Interrupting Capacity |
Product FAQs
8 answersWhat does the THFK236070 catalog number mean?
In the GE nomenclature, THFK designates a high interrupting capacity F-frame breaker. The number 2 indicates a 225A maximum frame size, the 3 stands for three poles, the 6 denotes a 600VAC maximum voltage rating, and 070 specifies the 70-ampere trip rating.
Which panelboards are compatible with the THFK236070 breaker?
This F-frame breaker is designed for use in GE A-Series panelboards, as well as compatible GE switchboards and motor control centers. Verify your specific enclosure accepts bolt-on TFK frame breakers before installation.
What type of wire can be used with the lugs on this breaker?
The factory lugs accept both copper and aluminum conductors ranging from 4 AWG to 300 kcmil. Ensure proper torque specifications are followed during installation to maintain a secure connection.
Does the THFK236070 feature an adjustable trip setting?
Yes, this thermal magnetic breaker features a fixed thermal element for long-time overload protection and an adjustable magnetic element. The adjustable magnetic setting allows electricians to tune the instantaneous short-circuit trip threshold to coordinate with other devices in the system.
Why is this breaker listed under both ABB and General Electric?
ABB acquired GE Industrial Solutions in 2018. Legacy GE molded case circuit breakers, including the TFK frame series, are now managed under the ABB brand portfolio. The physical footprint and compatibility remain identical to the original GE specifications.
Can this breaker be installed in a live panel?
No. The THFK236070 is a bolt-on circuit breaker. Power to the panelboard or switchboard must be completely de-energized and locked out before attempting to bolt the breaker to the busbars.
What is the difference between TFK and THFK breakers?
The letter H in THFK designates a higher interrupting capacity. The THFK236070 provides up to 25kAIC at 480VAC, whereas standard TFK versions have lower fault current ratings. Both share the same physical F-frame dimensions and mountings.
Can the THFK236070 be used in DC applications?
Yes, this breaker is rated for use in DC circuits up to 250VDC, providing a 10kA interrupting capacity. When installing in DC systems, verify that the wiring configuration meets the manufacturer requirements for DC load breaking.
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