The GE TJK636450 is a 450A, 3-pole, 600V J600 J-Frame molded case circuit breaker with interchangeable thermal-magnetic trip unit. Part of the GE J600 line, the TJK636 series offers interchangeable trip units — the trip unit can be replaced in the field without replacing the entire breaker frame, reducing maintenance costs. Rated 22kA interrupting capacity at 480V and 14kA at 600V. Includes copper/aluminum line and load lugs. The 600A frame accommodates amperages from 250A to 600A, making it ideal for large feeder and main circuit applications in commercial and industrial facilities. Note: The TJK/THJK/TJJ J-Frame product line entered Classic/Limited status in 2019 per ABB product lifecycle announcement; surplus and new-old-stock units remain available.
| Specification | Value |
|---|---|
| Amperage | 450A |
| Poles | 3 |
| Voltage | 600VAC, 250VDC |
| Interrupt Rating | 22kA @ 480V · 14kA @ 600V |
| Frame Size | J600 J-Frame (600A Frame) |
| Mounting Type | Bolt-On (Unit Mount) |
| Trip Type | Thermal Magnetic |
| Trip Function | LI — Long-Time, Instantaneous (Interchangeable Trip Unit) |
| Wire Size | (1) 6–600 kcmil or (2) 2/0–250 kcmil Cu/Al |
| Phase | 3-Phase |
| Standards | UL 489, CSA C22.2 No.5 |
| Temperature Rating | 40°C ambient |
GE / ABB GE TJK J-Frame 450A 3-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.
Brand: GE / ABB | Series: GE TJK J-Frame | Catalog Number: TJK636450
TJK636400 - GE / ABB TJK J-600 (600A Frame) | TJK636500 - GE / ABB TJK J-600 (600A Frame) | THJK636450 - GE / ABB THJK J-600 Hi-Break (600A Frame)