‘HEF’ Hazardous Area Enclosure Heaters

The self-regulating properties of the HEF enclosure heaters eliminate the requirement for a thermostat. Coupled with the compact design, this makes the HEF ideal for anti condensation, frost protection and temperature control where the enclosure is located within Zone 1 and Zone 2 or Class I, Div 2 Hazardous Areas.
Certified to ATEX Directive 94/9/EC IECEx and CSA requirements, they are suitable for use where the flammable atmosphere is Group IIA, IIB or IIC Gas.
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‘HEF’ Hazardous Area Enclosure Heaters

Features

Certified to meet the requirements of the ATEX Directive 94/9/EC IECEx and CSA

Compact, low profile, stainless steel case, requires minimal space

Self-regulating - can be used without a thermostat

Suitable for ambient temperatures from -60°C to +80°C

Mounting of the heater can be in any orientation

Design allows installation close to internal components and cables without fear of damage by overheating

Typical Applications

Control / monitoring panels

Instrumentation cabinets

Condensation prevention

Temperature fluctuations

Frost protection

Specification

Certification
ATEX certified ATEX ll 2 G
IECEx & ATEX certified Ex’e’ T4 and CSA
EN/IEC60079-0 & EN/IEC60079-7
Casing
Perforated stainless steel
Element
Self-regulating
Controls
The HEF is self-regulating, automatically reducing its output as the ambient temperature rises if overall enclosure temperature control is required it is recommended that the HEF heater is used in conjunction with one of the EXHEAT range of Ex’d’ thermostats
Mounting
The heater may be mounted in any orientation, using appropriate securing bolts through the mounting feet
Rating
The HEF range is available in a nominal 30, 50, 100, 200 & 500W outputs, models available for 110V or 230V 1 phase supplies

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