The Eaton ND312T36W is a 1200A, 3-pole, 600V Series C ND-Frame molded case circuit breaker with thermal-magnetic trip. The ND Frame is the thermal-magnetic companion to the electronic-trip RD Frame, sharing the same physical footprint and mounting dimensions. Rated 65kA @ 480V and 50kA @ 600V interrupting capacity. Sold without terminals — order terminal kits separately. The Series C ND Frame is Eaton's proven large-frame thermal-magnetic MCCB platform for main service entrance and large feeder applications where electronic trip units are not required. Suitable for industrial facilities, commercial buildings, and utility distribution equipment.
| Specification | Value |
|---|---|
| Amperage | 1200A |
| Poles | 3 |
| Voltage | 600VAC |
| Interrupt Rating | 65kA @ 480V · 50kA @ 600V |
| Frame Size | Series C ND Frame |
| Mounting Type | Fixed Mount (without terminals) |
| Trip Type | Thermal Magnetic |
| Trip Function | LSI — Long-time, Short-time, Instantaneous |
| Wire Size | (3) 350-750 kcmil Cu/Al |
| Phase | 3-Phase |
| Standards | UL 489, CSA C22.2 No.5 |
| Temperature Rating | 40°C ambient |
Eaton / Cutler-Hammer Series C ND Frame 1200A 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: Eaton / Cutler-Hammer | Series: Series C ND Frame | Catalog Number: ND312T36W
ND310T36W - Eaton / Cutler-Hammer Series C ND Frame | ND314T36W - Eaton / Cutler-Hammer Series C ND Frame | RD312T36W - Eaton / Cutler-Hammer Series C RD Frame | ND308T36W - Eaton / Cutler-Hammer Series C ND Frame