ABB / General Electric THKM836400 Molded Case Circuit Breaker
- 400A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THKM836400 - 400A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving as a critical component in industrial power distribution, this 400A molded case breaker provides essential long-time and instantaneous trip functions. The unit installs seamlessly into GE Spectra Series switchboards, A-Series panelboards, and motor control centers. Equipped with an interchangeable trip unit and boasting a 65kAIC rating at 240V, the THKM836400 allows engineers to maintain legacy K-Frame infrastructure without requiring complete system upgrades or modifications.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THKM836400-R |
| Series | THKM |
| Amperage | 400A |
| 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
5 answersWhich panelboards and switchboards are compatible with the THKM836400 breaker?
This unit mounts in GE A-Series Panelboards, Spectra Series Switchboards, and various GE Motor Control Centers.
What are the wire size limits for the load side lugs on this breaker?
The included lugs accept copper or aluminum conductors ranging from 3/0 AWG to 500 kcmil. Ensure proper torque specifications are followed during installation.
Can the trip settings be adjusted on the THKM836400?
Yes, this breaker features a fixed thermal and adjustable magnetic trip unit. You can adjust the instantaneous magnetic trip settings to coordinate with downstream devices or specific load requirements.
Does this breaker use an interchangeable trip unit?
Yes, the THKM836400 is designed with an interchangeable trip unit. This allows the trip unit to be replaced or upgraded without removing the entire K Frame from the switchboard.
Is this breaker suitable for DC applications?
Yes, it carries a DC interrupting rating of 10kA at 250VDC, making it suitable for specific direct current systems alongside its standard AC ratings.
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