The TRANBERG® TEF 1058 heat trace junction box wall mounted (off-line) connects self-regulating heating cables to the power supply in hazardous areas, zone 1, zone 2 and safe area. It is built on the TEF 1058 stainless steel enclosure, developed and manufactured at the R. STAHL Tranberg factory in Stavanger, and Tranberg heat trace boxes are found on most oil installations in the North Sea. The wall mounted box is installed off the pipe, with the heating cables brought in through connection kits and flexible conduit. Certified to ATEX and IECEx as Ex eb IIC T5 Gb, IP66/67.
Application
- Connection of heating cables in hazardous areas: chemical and petrochemical industries, industrial plants, frost protection and temperature maintenance
- According to NORSOK requirements
- Small box for up to 2 heating cables, large box for up to 3 heating cables, heating cables up to 64 W/m
Features and benefits
- IP66/67 as standard, IP67 without drain plug
- Acid-proof stainless steel AISI 316L with stainless steel type label spot-welded to the cover
- Several earthing alternatives; maximum strength and corrosion resistance
- Delivered with drilled entries and temporary plugs, or complete with cable gland, stopping plug, drain plug and label kit
- Bright chemical dip or electropolished finish
Technical data
| Material | Stainless steel AISI 316L / EN 1.4404 |
|---|---|
| Ingress protection | IP66/67 (IP67 if the drain plug is replaced with an IP67 stopping plug) |
| Terminals | Small: Phoenix MXK 4E, max. 4 mm² 440 V. Large: Phoenix UT6, max. 6 mm² (10 mm² 690 V terminal rating) |
| Ambient temperature | −50 °C to +50 °C |
| Ex protection | II 2 G Ex eb IIC T5 Gb |
Approvals and certificates
- IECEx PRE 14.0001
- PRESAFE 14 ATEX 4124, Directive 2014/34/EU
- EU and UK declarations of conformity; certificates and the user manual are listed above the table
Selecting the right box
Choose the small box for one or two heating cables and the large box for three. Take the version with glands when the power cable is Ø13–17 mm and you want the box ready to install; take the drilled version when glands are specified separately. The heating cable is connected with the connection kit for wall mounting, matched to the Raychem cable type. The pipe mounted version and the standard TEF 1058 junction box are found under related products.
