CEJ Fire-rated Mild Steel Enclosures


CEJ Fire-rated Mild Steel Enclosures

 CEJ- FR Datasheet  Back


Fully tested to BS 6387 CWZ: 2013 to 950ºC for 3 hours (including (C) flame, (W) water spray and (Z) external impact) or DIN 4102-12 (E30/60/90) flame only at 950ºC for 90 minutes.

Available with 2 and 3 pole ceramic terminals (to accept 4 mm² cables)

Available with plain sides (undrilled) or pre-drilled with M20 cable entries – see table below for options

IK10 impact resistance (to IEC 62262)

Finished in high visibility orange (RAL 2003)

Ingress protection levels

IP66 (EN 60529/IEC 60529)

Ambient temperature

-20ºC to +55°C


CEJ-FR mild steel enclosures have been designed to meet the highest standards of protection.

CE-TEK’s CEJ-FR enclosures have been successfully tested to all the latest fire standards for use in buildings and infrastructure projects.

When using fire rated cables on a project, the correct specification of junction boxes can often get overlooked. When fire strikes, it is not selective in the location of junction boxes and to maintain system integrity it is imperative that junction boxes are specified to the same rating as the cable being used.

The consequences of not selecting the correct type of enclosure can be huge, both financially and in terms of installation slippages. An example of this is where architects had specified fire-rated enclosures for a luxury hotel group, but electrical contractors had installed less expensive industrial enclosures that were not fire-rated, which had to be replaced throughout the hotel.

CE-TEK manufacture five series of fire rated junction boxes (CEJ, CEX, ACEX, CEP and CEA), which are tested for fire to various standards including: BS5839-1: 2013 Sec 26.2e; BS EN 50200: 2006; IEC60331-2: 2009, BS8434-2: 2003 + A2: 2009; IEC331 and BS6387-11: 1994 & 2013

Typical applications include road, motorway, rail and underground tunnels, offices, hotels and public buildings, and major infrastructure projects.


Product Code Height Width Depth 4mm²


No. of M20 entries
CEJ151510FR 150 150 100 2 x 2-pole 0
CEJ202010FR 200 200 105 3 x 3-pole 0
CEJ352510FR 350 250 105 4 x 3-pole 0
CEJ151510FR-M 150 150 100 2 x 2-pole 6
CEJ202010FR-M 200 200 105 3 x 3-pole 8
CEJ352510FR-M 350 250 105 4 x 3-pole 14

Please add ‘F’ suffix to the product code when ordering with fuse, e.g. CEJ151510FRF

Technical data (Extract) (For detailed information please click here)

Protection class

IP 66 (EN 60529/IEC 60529)


see data sheet


Mild Steel powder coated in orange (RAL 2003)


see data sheet


see data sheet


CEJFR datasheet

Fire Rated Junction Box Installation Guide

Declaration of Conformity

Customer requirements – Terminal/Junction Boxes

Operating Instructions – Empty enclosure

Operating Instructions – Populated enclosure