ABB / General Electric THJK436225 Molded Case Circuit Breaker
- 225A
- 3 Pole
- Unit Mount
Quantity
ABB / General Electric THJK436225 - 225A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Featuring an interchangeable trip unit, this 225A molded case circuit breaker delivers precise long-time and instantaneous (LI) fault protection. The adjustable magnetic trip allows engineers to fine-tune the response. As a unit-mount device, it integrates into GE motor control centers and J600 enclosures. Lugs must be sourced separately. Rated for 600VAC and 65kAIC at 240V, this J-Frame breaker serves as a high-interrupting alternative to the standard TJK436225.Specifications
| Brand | ABB / General Electric |
|---|---|
| Part Number | THJK436225-R |
| Series | THJK |
| Amperage | 225A |
| Poles | 3 |
| Mounting Style | Unit Mount |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC, 500VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 35kA @ 480VAC, 25kA @ 600VAC, 40kA @ 250VDC, 20kA @ 500VDC |
| Frame Type | TJK |
|---|---|
| Terminal Type | Lugs |
| For Use With | GE J600 Enclosures, Switchboards, Motor Control Centers |
| Wire Gauge | (1) 6 AWG - 600 kcmil (Cu/Al) or (2) 2/0 AWG - 250 kcmil (Cu/Al) |
| Max Wire | 600 kcmil |
| Min Wire | 6 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 | Lugs Not Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, Interchangeable Trip Unit, Common Trip, Trip-Free Mechanism, HACR Rated |
Product FAQs
5 answersWhat is the adjustable magnetic trip range for the THJK436225?
The instantaneous magnetic trip on this 225A breaker is adjustable from a low setting of 675 Amps to a high setting of 2250 Amps.
How must the THJK436225 be wired for 500VDC applications?
To achieve the 500VDC interrupting rating, all three poles must be wired in series. Using a single pole or parallel wiring will not provide the required voltage interruption capability and voids the DC rating.
Which GE enclosures are compatible with the THJK436225 breaker?
This breaker fits GE J600 line enclosures. Common compatible models include the TJ600J for NEMA 12 indoor applications and the TJ600R for NEMA 3R outdoor surface mount applications.
Is the GE THJK436225 still in active production?
ABB acquired GE Industrial Solutions and transitioned the THJK legacy molded case circuit breakers to a limited production phase. While exact dimensional replacements are not available, ABB recommends evaluating the Tmax XT3 or Tmax XT4 series for upgrading 225A to 250A frame applications.
Can the lugs on the THJK436225 accept dual conductors?
Yes, the standard lugs can accept either a single conductor ranging from 6 AWG to 600 kcmil or two conductors ranging from 2/0 AWG to 250 kcmil. Both copper and aluminum wire are supported.
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