Overview
The Eaton B-Line 303010 RTSC NK is a NEMA Type 3/3R junction box enclosure in carbon steel with a screw cover. Measuring 30 inches high by 30 inches wide by 10 inches in length, it is surface mounted with no knockout holes and features embossed through-holes for custom conduit entry. Designed for outdoor and industrial applications requiring reliable weather protection.
Features
- NEMA 3R rating for protection against windblown dust, rain, and sleet
- Carbon steel construction for strength and durability
- Screw cover for secure closure and easy access
- No knockout (NK) configuration — field-drillable for custom entry points
- Embossed through-holes for conduit and mounting flexibility
- Surface-mounted, single-door design
Specifications
| Attribute | Value |
|---|---|
| Manufacturer | B-Line (Eaton) |
| Model | 303010 RTSC NK |
| UPC | 78205130305 |
| Height | 30 in. |
| Width | 30 in. |
| Length (Depth) | 10 in. |
| Material | Carbon Steel |
| NEMA Rating | 3/3R |
| Cover Type | Screw Cover (RTSC) |
| Knockout | No Knockout (NK) |
| Mounting | Surface |




