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Raychem 20FHT4-CT Constant Wattage Parallel Heating Cable, 400 V, 20 W/m

More from FHT4 Constant Wattage Parallel Heating Cables

Raychem 20FHT4-CT Constant Wattage Parallel Heating Cable, 400 V, 20 W/m
Raychem 20FHT4-CT Constant Wattage Parallel Heating Cable, 400 V, 20 W/m

Quick Find: 10067
Part Code: 1244-006065

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    Product overview

    FMT and FHT are constant wattage parallel circuit heating cables designed for pipe and equipment heat-tracing in industrial applications. This family offers an economical alternative to self-regulating heating cables but requires more skill for installation and also requires more advanced control and monitoring systems.

    Its unique round geometry provides excellent flexibility during installation as it allows for bending in every direction. The heating element which is the most fragile part of any constant wattage parallel circuit heating cable is protected by a PTFE insulation tape that eliminates shear stresses during flexing and also acts as a shock absorber, thereby providing a high level of protection. The heating cables can be used for frost protection and process temperature maintenance requiring high power output. The heating cables are zone parallel heaters constructed from a heating element wrapped around two parallel conductors. The distance between conductor contact points forms the heating zone length. The parallel construction allows it to be cut-to-length and terminated in the field.

    FMT heating cables can withstand routine steam purges and temperature exposure to 200°C power off. They can be used to maintain temperatures up to 150°C (depending on cable type) and are only available in a 230 Vac version.


    Area Classification:

    • Hazardous, Zone 1, Zone 2 (Gas), Zone 21, Zone 22 (Dust)
    • Ordinary

    Traced Surface Type:

    • Carbon steel, Stainless steel,
    • Painted or unpainted metal

    Chemical Resistance:

    • Organics and corrosives
    • For aggressive organics and corrosives consult your local Pentair representative


    The FMT and FHT heating cables are approved for use in hazardous areas by Baseefa Ltd.

    • Baseefa08ATEX0050X & IECEx BAS 08.0019X
    • II 2GD Ex e II T* (See Schedule) Ex tD A21 IP66
    • Ex e II T* (See Schedule) Ex tD A21 IP66

    ​*By design. Temperature classification (T-rating) has to be established by using the principles of stabilised design or the use of a temperature limiting device. Use TraceCalc design software or contact Pentair.

    Heating CableVoltage (VAC)Nominal Power Output (W/m)Max. Power Output (W/m)T6 (86°c)T5 (100°c)T4 (135°c)T3 (200°c)T2 (260°c)

    Technical specifications

    Cold lead length2.5 m
    Maximum intermittent exposure temperature (power off)260 °C
    Minimum bend radius25 mm
    Minimum Clearance50 mm
    Minimum installation temperature-60 °C
    Supply Voltage385 - 415 VAC

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