Crouse-Hinds series N-TB is our premium line of stainless steel enclosures. Available in 316L stainless steel and painted mild steel, N-TB enclosures have been designed to accommodate rail mounted terminals or other electrical components in corrosive and environmentally challenging outdoor applications.
These enclosures are also available fully assembled as custom-configured and certified terminal boxes. Options include custom entries, cable glands and plugs with built-in terminals (Ex-e and Ex-i) and other equipment.
Description
Certifications and compliances
Component certificates – BVS13ATEXE014U and IECEx BVS 13.0026U
- 2G Ex e IIC Gb or 2D Ex tb IIIC Db
- TR-CU and EAC certified
- Class I, Division 2, Groups A, B, C, D*; Class I, Zone 1
- cULus to UL50/C22.2 No. 94-M91
- UL Listed E115376 (Ordinary Location)
- Type 3S, 4 – painted mild steel**; Type 4X/IP66 – stainless steel
*When terminal blocks or approved Class I, Division 2 devices are installed within the enclosure in accordance with NEC/CEC requirements. These enclosures are NOT explosionproof and will NOT contain an explosion. Installation of arcing and sparking devices which are not Class I, Division 2 rated or higher is NOT PERMITTED.
**Painted versions only available on demand.
Design features
- Twenty-eight basic sizes in five standard depths to optimize the accommodation of rail mountable terminals or components
- Fully removable hinged cover, concealed hinges provide 180° opening
- Cover mounting, two or three stainless steel captive screws on one side
- Lip on upstand increases gasket contact area, ensuring high degree of ingress protection
- Internal/external ground stud
- 40mm wide mounting lugs for assembly on standard frames
- Option of 0, 1, 2, 3 or 4 gland plates
- Optional through cover padlock hasp available
Factory customization options
- Terminals, glands and Myers hubs assembled according to customer specification
- Drilled entries for cable glands fitted to customer specification
- Tapped entries on 6mm thick gland plates
Standard materials
- Enclosure – polished 316L stainless steel (standard); polished 304 stainless steel; painted mild steel (optional)
- Gasket – foam-in-place silicone (standard); cut silicone for extended temperatures (optional)
- Cover screws – stainless steel
