FXS Block Heaters and Custom Enclosure/Cabinet Heaters

Product Applications
  • Accumulator System Cabinet
  • Acoustic Enclosure
  • Anti Condensation Heater
  • Anti-Freeze
  • Battery Cabinet Heater
  • Cabinet
  • Chemical Injection Cabinet
  • Compressor Frame Enclosure
  • Control Housing
  • Diesel Generator Enclosure
  • Electrical Panel
  • Enclosure
  • Fire Equipment Cabinet
  • Frost Protection
  • Gas Seal Panel
  • GRP Enclosure
  • Instrumentation for Compressor Package
  • Junction Boxes
  • Motor Cases/Enclosures
  • Motor Enclosure
  • Motor/Generator
  • Offshore Cabinet
  • Offshore Panel Heater
  • Outdoor Telecommunications Cabinet
  • Panel for Compressors
  • Panel Heaters
  • Silo Base Enclosure warming
  • Skid Enclosure
  • Switchgear Panel/Cubicles
  • Wardrobe

The FXS range of self-regulating enclosure/cabinet heaters provide a bespoke solution tailored to suit your requirements. Unlike fixed duty heaters, FXS heaters do not require a thermostat to operate safely, due to their inbuilt ability to reduce the output as the temperature increases. They can operate in ambient temperatures as high as 130°C (T4) or 180°C (T3) and down to -60°C, and are certified for use in hazardous areas where the atmosphere is classified as Zone 1 or 2 (Gas groups IIA, IIB, IIC) and Zone 21 or 22 (Dust groups IIIA, IIIB, IIIC).

The FXS enclosure/cabinet heaters can also be easily integrated with the FXT range of thermostats for enhanced temperature management.


  • Certified to ATEX, IECEx and CUTR (EAC) standards
  • Hard anodised aluminium housing suitable for onshore and offshore applications
  • Can be directly mounted to the component that requires heating
  • Compact and efficient
  • Suitable for ambient temperatures as low as -60°C and up to +180°C
  • Available in T3 and T4 temperature classes


Certification ATEX/IECEx
II 2 G D
Ex db IIC T4 to T3 Gb
Ex tb IIIC T135°C to T200°C Db

Class I Div 1, Groups A, B, C, D. T4...T3
Class II Div 2, Groups E, F, G. T4...T3
Class I Zone 1, AEx tb IIIC T4...T3
Zone 21, AEx tb IIIC T135°C...T200°C

1Ex db IIC T4...T3 Gb X
Ex tb IIIC T135°C...T200°C Db X
Voltage 100 to 140VAC or 200 to 265VAC
Output Up to 1000W (subject to design, mounting and ambient conditions)
Ambient -60 to +130°C: T4 heaters
-60 to +180°C: T3 heaters
T Class T4 (135°C) or T3 (200°C)
Mounting Directly bolted
Cabling 3m standard (up to 10m available on request)
IP Rating IP66 / IP68