Eaton / Cutler-Hammer JD Series Circuit Breakers
The Eaton / Cutler-Hammer JD series is a J-Frame molded case circuit breaker rated for 600A frame size and 600VAC operation. JD breakers cover the 70A to 600A range for motor feeder protection, industrial distribution, and large commercial applications.
Series Specifications
| Frame | J-Frame — 600A Frame |
|---|---|
| Amperage Range | 70A – 600A |
| 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 JD series originated with Cutler-Hammer and continued under the Eaton brand. The J-Frame 600A rating made it a workhorse for medium-duty industrial applications requiring more capacity than the F-Frame but less than the K-Frame.
Typical Applications
- Motor feeder protection
- Industrial distribution
- Large commercial applications
- Feeder circuit protection
- Service entrance equipment
Available Catalog Numbers
- JD3250 — 250A, 3 pole, 240/480/600VAC
- JD3100 — 100A, 3 pole, 600VAC
- JD3125 — 125A, 3 pole, 600VAC
- JD3150 — 150A, 3 pole, 600VAC
- JD3175 — 175A, 3 pole, 600VAC
- JD3200 — 200A, 3 pole, 600VAC
- JD3225 — 225A, 3 pole, 600VAC
- JD2250 — 250A, 2 pole, 600V
- JD3150W — 150A, 3 pole, 600VAC
- JD3175W — 175A, 3 pole, 600VAC
- JD3200W — 200A, 3 pole, 600VAC
- JD3225W — 225A, 3 pole, 600VAC
- JD3250W — 250A, 3 pole, 600VAC
- JD3070 — 70A, 3 pole, 240VAC
- JD3100 — 100A, 3 pole, 240VAC
- JD3125 — 125A, 3 pole, 240VAC
- JD3150 — 150A, 3 pole, 240VAC
- JD3175 — 175A, 3 pole, 240VAC
- JD3200 — 200A, 3 pole, 240VAC
- JD3225 — 225A, 3 pole, 240VAC