Suppliers of Industrial and commercial electric heaters and controls

Tel:  01293 547 361

Industrial and commercial heaters

Tel:  01293 547 361

CRJ Self Regulating Heat Cable for Pipes

  • Prevents water from freezing in metal or plastic pipes
  • Maintains temperature in pipes for a wide variety of industrial processes
  • Supplied by the metre – order as much or as little as required
  • Range includes ATEX approved cables and accessories

Range & Prices

The prices shown are list prices and perfectly safe to use for budget purposes. Contact your electrical wholesaler for final prices.

Cables

NOTE: EX (ATEX) cables can be used in both hazardous and non-hazardous areas.

Model W/m List Price/m (under 50m) List Price /m (50m+)
CRJM-11 11 £10.50  £9.00 
CRJM-17 17 £11.00  £10.00 
CRJ-25EX 25 £20.00  £19.00 
CRJ-40EX 40 £21.00  £20.00 

CRJM cable is suitable for installation on plastic and metal pipes

Accessories

  Model Description List Price
CRJ-T1 Termination Kit (one per circuit) uses shrink on material – not for use when ATEX approval required. Prepares one end for electrical connection and seals the far end.  £18.00
THK Termination Kit (one per circuit) uses silicone – can be used when ATEX approval required or for general purpose applications (not for use with CRJM). Prepares one end for electrical connection and seals the far end. £39.00 
THKM Termination Kit (one per circuit) uses silicone – for use with CRJM. Prepares one end for electrical connection and seals the far end. £39.00 
CRJ-S Splice /T Kit (one for every splice or T joint) – uses shrink on material – not for use when ATEX approval required – max temperature 80˚C £19.50 
PF-T Fixing Tape (33m x 19mm) for fixing cable to pipe – max temp 80°C £3.00
AL-50 Aluminium Tape (45mm x 50mm) – for wrapping plastic pipes before installing cable or for fixing cable to pipe – max temp 110°C  £13.00
PF-L Caution Labels (10 pack) apply to outside of insulation £7.50 
THB THB Stainless Steel Bracket for junction box or THT thermostat c/w stainless steel bands for fixing to pipe – for insulation up to 50mm thick and pipes up to 150mm diameter  £25.00
THJ Junction Box IP66 6-way terminal block 40A max £41.00 
THJEX ATEX Junction Box with 3 x M20 entries (one plugged) 6-way terminal block 16A max £186.00 
THT Capillary Thermostat 5 to 50°C IP66 (16A) £128.00 
THTEX ATEX Capillary Thermostat 0 to 40°C IP66 (16A) £646.00 
FST2-IN Frost Thermostat Indoor Use (20A)  £86.00
FST2-EX Frost Thermostat Outdoor Use (20A) IP66 £162.00 

Technical Specification

Application Water pipe freeze protection
  Temperature maintenance (up to 50˚C)
Voltage 230V
Outputs 11 to 40W/m (see selection table)
Construction Parallel (can be cut to length without affecting output per metre)
Earth protection Continuous metal braid
Outer jacket Thermoplastic
Maximum exposure temperature (power on) 65˚C (CRJM) 85˚C (CRJ)
Maximum exposure temperature (power off) 85˚C
Minimum installation temperature -40˚C
Ingress protection IP67
Minimum bending radius 35mm
Weight (kg/100m) 9.3 (CRJM) 11.8 (CRJ)

EX (ATEX) Cables

NOTE: EX (ATEX) cables can be used in both hazardous and non-hazardous areas

Zone 1,2,21 & 22
Group IIC (gas) IIIC (dust)
Temperature Class T6

Maximum Length (m) / Circuit Breaker Size (type C)

Cable Start-up Temp (˚C) 10A 16A 20A 32A
CRJM-11 +5 76 126 128 ——
  0 70 118 128 ——
  -20 46 78 124 128
CRJM-17 +5 54 88 102 ——
  0 50 84 102 ——
  -20 34 56 88 102
CRJ-25EX +10 74 118 124 124
  0 68 108 120 120
  -20 60 94 112 112
CRJ-40EX +10 46 74 92 98
  0 42 66 84 94
  -20 36 58 74 88

Selection

If you would like the experts at BN Thermic to select a pipe freeze protection system for you, please click below to access our enquiry form.  Simply provide as much information as you have available and we will respond with a detailed proposal.

Enquiry Form

Cable Selection

Selection Table – Pipe Freeze Protection (based on a minimum ambient temperature of -20˚C and mineral wool insulation).  Cable installed in a straight line.
Outside Pipe Diameter Insulation Thickness (mm)
12 25 50
12mm      ( ½” Pipe) CRJM-11 CRJM-11 CRJM-11
25mm      ( 1” Pipe) CRJM-11 CRJM-11 CRJM-11
50mm      (2” Pipe) CRJM-17 CRJM-11 CRJM-11
75mm       (3” Pipe) CRJ-25EX CRJM-17 CRJM-11
100mm     (4” Pipe) CRJ-40EX CRJM-17 CRJM-11
150mm    (6” Pipe) —– CRJ-25EX CRJM-17
200mm     (8” Pipe) —– CRJ-40EX CRJM-17

Note: a frost thermostat is always recommended

Selection Table -Temperature Maintenance Protection (based on a minimum ambient temperature of -15˚C, carbon steel pipe and mineral wool insulation).  Cable installed in a straight line.
Outside Pipe Diameter Pipe Temperature 25mm Thick Insulation 50mm Thick Insulation
25mm   (1” Pipe) 20°C CRJ-25EX CRJ-25EX
30°C CRJ-25EX CRJ-25EX
40°C CRJ-40EX CRJ-25EX
50°C —– CRJ-40EX
50mm   (2” Pipe) 20°C CRJ-25EX CRJ-25EX
30°C CRJ-40EX CRJ-25EX
40°C —– CRJ-40EX
50°C —– CRJ-40EX
75mm   (3” Pipe) 20°C CRJ-25EX CRJ-25EX
30°C CRJ-40EX CRJ-40EX
40°C —– CRJ-40EX
100mm  (4” Pipe) 20°C CRJ-40EX CRJ-25EX
30°C —– CRJ-40EX
40°C —– CRJ-40EX
Important Notes – when selecting cable for temperature maintenance applications

Changes in selection parameters can affect cable selection.  Please call BN Thermic to discuss cable selection for your project.

Additional pipe temperature control is always recommended

This selection table is designed to cover the more commonly encountered applications.  If your requirements fall outside the limit of this table, please call BN Thermic.

Nominal output for cable installed on an insulated carbon steel pipe

Nominal output for cable installed on an insulated carbon steel pipe

BN Thermic can assist you in selecting the right cable

Downloads