ABB / General Electric THKM836500 Molded Case Circuit Breaker
- 500A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THKM836500 - 500A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Designed for commercial use, the GE THKM836500 is a 3-pole, 500A molded case circuit breaker. It uses a thermal-magnetic trip mechanism with adjustable magnetic settings for LI protection. This MCCB integrates into GE A-Series panelboards, Spectra switchboards, and motor control centers. This legacy K-Frame breaker is replaced by the SKHA36AT0500. Operating at 600VAC, it achieves 65kAIC at 240V and 35kAIC at 480V. It features an interchangeable trip unit and includes lugs.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THKM836500-R |
| Series | THKM |
| Amperage | 500A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | GE A-Series Panelboards, Spectra Series Switchboards, Motor Control Centers |
| Wire Gauge | (3) 3/0 AWG - 500 kcmil (Cu/Al) |
| Max Wire | 500 kcmil |
| Min Wire | 3/0 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, Lug Kits |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Interchangeable Trip Unit |
Product FAQs
8 answersWhat enclosures and panels are compatible with the THKM836500?
This bolt-on molded case circuit breaker is designed to integrate directly into GE A-Series panelboards, Spectra Series switchboards, and GE motor control centers.
What does the H in the THKM836500 part number signify?
The H indicates a High Interrupting Capacity breaker. It delivers a 35kAIC rating at 480VAC, which provides higher fault current protection than the standard TKM series breakers.
Can the trip unit on the THKM836500 be swapped out?
Yes, this breaker features an interchangeable thermal-magnetic trip unit. This allows panel builders to change the trip rating in the future without having to replace the entire 800-amp breaker frame.
Why is this breaker listed under both ABB and General Electric?
General Electric's industrial circuit breaker division was acquired by ABB. Depending on the manufacturing date, the THKM836500 may carry either GE or ABB branding, but the physical dimensions, mounting, and performance specifications are identical.
What is the Spectra Series replacement for the THKM836500?
The legacy K-Frame THKM836500 was superseded by the Spectra RMS series SKHA36AT0500. If you are upgrading to the Spectra series, verify your panel mounting hardware, as transitioning between frame types often requires a different adapter kit.
Does the THKM836500 support internal accessories?
Yes, this K-Frame breaker supports field-installable internal accessories, including shunt trips, auxiliary switches, alarm switches, and undervoltage releases.
How does the trip adjustability work on this breaker?
The THKM836500 uses an LI (Long-Time, Instantaneous) thermal-magnetic trip unit. The thermal element for long-time overload protection is fixed at 500 amps, while the magnetic instantaneous trip setting is adjustable to coordinate with downstream loads and prevent nuisance tripping.
What is the maximum frame size for this breaker?
The THKM836500 is built on the GE K1200 line but specifically utilizes an 800-amp maximum frame size, which is indicated by the 8 in the part number. It is equipped here with a 500-amp trip unit.
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