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Electrical convectors are designed for heating industrial premises, technical facilities, containers, painting booths, warehouses for inflammable goods, drilling platforms and sites.

CETAL offers a complete range of products for hazardous or explosion-proof environment.

CETAL can also design  the convectors according to customer specification.

For ATEX/IECEx applications, CETAL offers connection boxes in ex “d” or “e” protection mode.

Reliability and robustness are key drivers for our engineers.

Product overview

  • Power from 100W to ~10kW
  • Voltage max. 680 V
  • Galvanized steel frame or stainless steel
  • Enamelled , steel, zinc coated or stainless steel fins


  • Large range of materials and options according to customer process and conditions of use
  • Benefit from CETAL’s 50 years of experience as designer and manufacturer!
  • Equipment available for use in hazardous areas or safe environment
  • Robustness

Operating conditions

  • Normal (non-ATEX)
  • Hazardous areas (ATEX/IECEx) and NEC 505
  • Extreme environments: – 60°C to + 80 °C
  • Onshore / Offshore environment
  • Salt atmosphere


  • Air, max load 0.1 -8W/cm² according to sheath temperature, material: 321
  • Non corrosive gas

Technical description

The Watt density, tube diameter and the tube sheath are chosen to optimize the reliability and robustness (corrosion, temperature) of CETAL equipments.


  • Tubular heating element
  • Ceramic heaters inside the ribbed tube.

Tube diameter & material

  • Tube diameter: 8.5 / 10 / 13.5 /16 mm
  • Tube material: Stainless steel: AISI 304 or 321
  • Tube type: sealed tube


  • 100% of the components come from our high-quality suppliers from Europe
  • 100% manufacturing in CETAL factory

  1. Connection terminals
  2. Tube
  3. Insulation: magnesia oxyde (Mg O), to secure optimized heat transfer and electrical insulation.
  4. Resistance wire: Made of Nickel Chrome 80/20, it is the active part of the heating element (Joule effect)
  5. Cold length
  6. Sealing material: Keeps out external moisture. Different types (silicon, resins, cement) are used depending on the industrialapplication, the external medium and temperature.
  7. Output insulation: Made of steatite ou corundum, it provides dielectric insulation (creepage distance, distance in the air).

RAE Series

RBAE Series

According to EC type examination certification

LCIE 01 ATEX 6042 X

IECEx LCIE 15.0029X

LCIE 01 ATEX 6042 X

IECEx LCIE 15.0029X

Type of heating elements

Ribbed heating elements

Ceramic core element


Partially open galvanized steel frame,

or stainless steel, enamelled fins.

The stainless steel version is recommanded for use in particular environments such as salt-water environment.

Coated steel tube and fins

Support and chassis

Galvanized steel or stainless steel

Painted steel

ATEX/IECEx temperature class

T3 / T4

T3 / T4*

Ambient operating temperature

– 50 °C ≤ Ta ≤ + 40° C

Max. temperature on heating element

+ 200 °C (T3) / + 135 °C (T4)

at 40 °C ambient temperature


500 W and 750 W versions: 230 V 1PH

Other versions: 230 V 1PH or

400 V 3PH star or delta connection **

230 V 1PH,

400 V 3PH on demand

ATEX/IECEx housing

Type d ExdIIC,

painted aluminium, RAL 1004 yellow paint finish
including ATEX cable gland, nickel-plated brass

Type e ExeIIC,

stainless steel or painted steel including
ATEX cable gland, ­nickel-plated brass

Type “d” ExdIIC,
painted aluminium,
RAL 1004 yellow paint finish


Integrated thermostat, stainless steel sleeve,
0/40 °C 3PH, -20/+50 °C 1PH
or 0/38 °C 1PH depending on the model

  • Wall mounting kit
  • Other supply voltage on demand
  • Other ambient temperature on demand

* on request
** other voltage on demand, max. 680 V

  • Certified for operation in hazardous areas in zone 1/11 and 2/22
  • EC-type examination certificate LCIE 01 ATEX 6042X
  • IECEx Certificate of Conformity LCIE 15.0029X
  • EAC & CU TR (former GOST)

Electrical tests

  • Power test by cold resistance measurement. Allowed tolerance: -5% and +10% of the nominal resistance value.
  • Insulationtest, direct voltage 500 V, mini cold value is > 100 Megohms
  • Dielectric test, (2U + 1000 V)  x 1,2 during 1 second
  • The stray current and the hot dielectric rigidity can be measured on a sample at operating temperature (on request).
  • 100% of the heating elements are tested before shipment (Final control)

Mechanical tests

  • Visual inspection

Dimensional test

  • Critical dimension are tested

In addition to heater design, the use of specifically developed connection boxes allows to install the products in hazardous areas.

The increased safety protection mode “e” (EN60079-7) or the explosion-proof protection mode “d” (EN 60079-1), together with temperature control acc. to EN 60079-0, make it possible to operate the equipments in hazardous area (zone 1 and zone 2) for gases of the A-B-C groups.

  • Wall mounting kit (optional)

A set of mounting brackets is available as option.