Westinghouse KD Series (Westinghouse) Circuit Breakers
The Westinghouse KD series is a K-Frame molded case circuit breaker rated for 800A frame size and 600VAC operation. KD breakers cover the 70A to 800A range for large motor protection and industrial distribution.
Series Specifications
| Frame | K-Frame — 800A Frame |
|---|---|
| Amperage Range | 70A – 800A |
| Voltage | 600VAC |
| Poles | 2-Pole & 3-Pole |
| Interrupting Rating | 35kA @ 600V / 65kA @ 480V / 100kA @ 240V |
| Mounting | Bolt-On |
| Trip Type | Thermal Magnetic |
History and Replacement Context
The Westinghouse KD series was part of the Series C product family, continuing under the Cutler-Hammer brand after the 1994 Eaton acquisition.
Typical Applications
- Large motor protection
- Industrial distribution
- Main switchboard applications
- Feeder circuit protection
Available Catalog Numbers
- KD2300 — 300A, 2 pole, 600V
- KD2350 — 350A, 2 pole, 600V
- KD2400 — 400A, 2 pole, 600V
- KD3300 — 300A, 3 pole, 600V
- KD3350 — 350A, 3 pole, 600V
- KD3400 — 400A, 3 pole, 600V
- KD30400W — 400A, 3 pole, 600VAC
- KD3100 — 100A, 3 pole, 240VAC
- KD3125 — 125A, 3 pole, 240VAC
- KD3150 — 150A, 3 pole, 240VAC
- KD3175 — 175A, 3 pole, 240VAC
- KD3200 — 200A, 3 pole, 240VAC
- KD3225 — 225A, 3 pole, 240VAC
- KD3250 — 250A, 3 pole, 240VAC
- KD3300 — 300A, 3 pole, 240VAC
- KD3350 — 350A, 3 pole, 240VAC
- KD3400 — 400A, 3 pole, 240VAC
- KDB3100 — 100A, 3 pole, 600VAC
- KDB3125 — 125A, 3 pole, 600VAC
- KDB3150 — 150A, 3 pole, 600VAC