The surface of the heating cable must not exceed the maximum temperature of the constructional materials or the Temperature Classification if installed in a hazardous area. This is ensured by limiting the pipe or workpiece temperature to a safe level either by design calculation or by means of temperatue control devices.
Contact Rail Heater (CRH)
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Self-Regulating Heaters > Contact Rail Heater (CRH)

Product Features | | | | | | | | | |  |

The Contact Rail Heater self-regulating heating cable has been specifically developed for contact and 3rd/live rails operating on up to 750 volt DC systems. Contact Rail Heater is designed to mantain the operational integrity of rail networks, ensuring contact rails are kept clear of snow and ice during adverse weather conditions. Contact Rail Heater is supplied in single lengths upto 178 metres and fitted with 1.5 metre pre-terminated cold lead with remote end seals. It is suitable for direct replacement of existing contact rail heaters and will intergrate with the majority of contact or live rail heating systems. The heater is held in place on the rail using protective GRP channel or angle section and purpose made heavy duty rail clips. Contact Rail Heater cables and system components are suitable for withstanding the hazards of a rail environment - such as severe and continuous vibration due to rail traffic, immersion in icy water, snow, weed killer formulations, diesel oils, lubrication oils, oxalic acid and de-icing fluids. Contact Rail Heater cables are able to operate in "free air", totally or partially, without affecting the working life of the heater. The installation of Contact Rail Heater is quick and simple and requires no special skills or tools. The fitting of new or replacement heaters can be carried out quickly and easily with minimum track possession time required causing minimum disruption to rail traffic. | |  Contact Rail Heater (CRH) with mounting GRP channel  Contact Rail Heater (CRH) with mounting GRP angle |
The graph shows the nominal power output at 600V on a rail. Click on the graphs to see a larger version. | Maximum Withstand Temperature | 250°C (482°F) | | Minimum Energised Temperature | 250°C (482°F) | | Minimum Installation Temperature | -40°C (-4°F) | | Power Supply | Up to a 1000 points | | Cable Dimensions | 13.6 x 4.8 mm | | Cable Weight kg/100m | 11.5 kg | | Minimum Bending Radius | 30 mm | | |  Nominal power output against rail temperature |
Maximum Circuit Length (m) for various circuit breaker sizes
Product Reference | Start-Up Termperature (°C) | 230v 16A | 20A | 32A | 50A | | | |
| 90CHR6 | 0 | | 84 | | 104 | | 166 | | 208 | | | | | | | |
| | -10 | | 68 | | 84 | | 136 | | 208 | | | | | | | |
| | -20 | | 56 | | 72 | | 114 | | 178 | | | | | | | |
For use with Type C circuit breakers to IEC 60898
Product, Application & Documentation Links | |
Approvals and Certification
EU DoC Contact Rail Heater, CRH
Product and Application Datasheets
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