ABB / General ElectricTHKMA31000WL
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ABB / General Electric THKMA312000WL THKMA31200WL - 1200A 3 Pole Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Unit Mount
ABB / General Electric
THKMA312000WL
THKMA31200WL - 1200A 3 Pole Molded Case Circuit Breaker
Brand
ABB / General Electric
SKU
THKMA312000WL
Quantity
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ABB / General Electric THKMA31200WL - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
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ABB / General Electric THKMA31200WL - 1200A 3 Pole Molded Case Circuit Breaker
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| Brand | ABB / General Electric |
|---|---|
| Part Number | THKMA312000WL |
| Series | THKMA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 22kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs (TCAL121) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip, High Interrupting Capacity |
Quantity
ABB / General Electric THKMA31200WL - 1200A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | ABB / General Electric |
|---|---|
| Part Number | THKMA312000WL-R |
| Series | THKMA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 22kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs (TCAL121) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip, High Interrupting Capacity |
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Description
Built for heavy industrial loads, this 1200-amp K-Frame breaker delivers dependable thermal-magnetic protection. The 3-pole unit is ideal for demanding commercial environments. Designed to fit GE A-Series panelboards and switchboards, it serves as an exact replacement for the older TKMA31200WL. When upgrading, facilities often transition to the Spectra RMS SKHA36AT1200. The breaker provides a 35kAIC rating at 480VAC and features an interchangeable trip unit. Factory lugs ensure a secure fit.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THKMA312000WL-R |
| Series | THKMA |
| Amperage | 1200A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 22kA @ 500VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, Switchboards, Motor Control Centers |
| Wire Gauge | (4) 250-500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 250 kcmil |
| 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs (TCAL121) |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Interchangeable Trip, High Interrupting Capacity |
Product FAQs
6 answersWhat equipment is the THKMA312000WL compatible with?
This 1200A K-frame breaker is designed for unit-mount or bolt-on installation in legacy GE A-Series panelboards, switchboards, and motor control centers.
How does the adjustable magnetic trip function operate on this breaker?
While the thermal (long-time) trip is fixed at 1200A, the magnetic (instantaneous) trip is adjustable. Electricians can set the short-circuit trip threshold anywhere from 3600A to 10000A using the front dial to ensure proper selective coordination with downstream devices.
What wire sizes do the included lugs accept?
The factory-installed lugs accommodate four 250 to 500 kcmil copper or aluminum conductors per phase. Ensure proper torque specifications are followed during installation to prevent thermal issues.
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 K-frame THKMA series, are now manufactured and supported by ABB while maintaining exact backward compatibility with existing GE installations.
What does the WL suffix indicate in the THKMA312000WL catalog number?
The WL designation signifies that the breaker is supplied with factory-installed line and load lugs. Breakers without this suffix typically require terminal lugs to be purchased and installed separately.
What safety considerations apply when using this breaker in DC systems?
When applying this breaker in direct current systems up to 500VDC, ensure the available system fault current does not exceed its 22kA DC interrupting rating. Proper pole wiring configurations must be followed for safe DC isolation.
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