N-TB (NXT) enclosures
Fully removable hinged cover
Applications:
- Available in two types of material finish, N-TB (NXT) enclosures have been designed to accommodate rail mounted terminals or other electrical components
- 316L stainless steel is recommended to give maximum protection for components in outdoor/aggressive environments
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
- One-piece gasket on cover and gland plates
- Optional through cover padlock hasp available
Certifications and compliances:
Component certificates –
BVS13ATEXE014U and IECEx BVS 13.0026U:
- UL50/C22.2 No. 94-M91
- Type 3S, 4 – mild steel; Type 4X/IP66 – stainless steel
Factory 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
N-TB-T terminal boxes:
N-TB (NXT) enclosures are available 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. Contact us for details.
Standards:
- IEC/EN 60079-0
- IEC/EN 60079-7
- IEC/EN 60079-31
- IEC/EN 60529
EN/IEC certificates:
- BVS16 ATEX-E-099X
- IECEx BVS 16.0065X
Ambient temperatures:
- 55B/-40C/-35°CD up to +40°C (T6 and maximum surface temperature of T80°C)
- -55B/-40C/-35°CD up to +55°C (with temperature class T5 and maximumsurface temperature of T95°C)
- -55B/-40C/-35°CD up to +65/70/80/100/110°C (with temperature class T4 and maximum surface temperature of T120°C)
Material:
- Terminal boxes only available in 316L stainless steel enclosures
Electrical ratings:
- Rated voltage up to 690V AC/DC; rated current up to 400A; conductor cross sections up to 240mm2
Markings:
- ATEX and IECEx: Ex e IIC T6/5/4 Gb or Ex eb IIC T6/5/4; Ex tb IIIC T80/95/120°C Db or Ex tb IIIC T80/95/120°C
- NEC 500 and NEC 505: Class I, Division 2, Groups A, B, C, D and Class I, Zone 1, Aex e IIC T6/5/4
- EAC CU TR: 1Ex e IIC T6/T5 Gb X or Ex tb IIIC T80/95/120°C Db X
Note: Ambient temperature range depends on ratings of built-in components and enclosure gland plate and gasket options.
