Enclosure Heaters – TEF 9209 Series

Stainless steel enclosure heater, 50–600W, for Zone 1/2. Self-regulating with flying lead or junction box; thermostat optional.

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Enclosure heaters – tef 9209 series

The TRANBERG® TEF 9209 series provides reliable, self-regulating heating for enclosures exposed to condensation, frost, or low ambient temperatures. Certified for use in Zone 1, Zone 2, and Safe Area installations, this product is ideal for offshore, marine, and industrial environments that require robust Ex-certified solutions.

Built with a rugged AISI 316L stainless steel housing, the TEF 9209 is engineered to withstand harsh conditions while remaining compact and easy to install. It comes in multiple power outputs from 50W to 600W, and is available in three main variants:

  • Flying lead

  • With a junction box

  • With junction box and ambient thermostat (+5°C or +15°C)

Key Features

  • Construction: Marine-grade AISI 316L (EN 1.4404) stainless steel

  • Heating range: 50W to 600W (measured at 0°C, still air)

  • Self-regulating element: Prevents overheating

  • Mounting: 4xM6 screw holes (backside); sandwich bracket for 600W version

  • Electrical connection: Flying lead or junction box

  • Ingress protection: Use in enclosures rated IP54 or higher

  • Thermostat models: Integrated +5°C or +15°C ambient air thermostat (with hysteresis ±5°C)

  • Certifications:

    • ATEX: Presafe 18ATEX12634X / CML 22ATEX3623X

    • IECEx: PRE 18.0037X / CML 22.0096X

    • UKEX: CML 22UKEX3624X

  • Voltage: 120V AC, 50/60Hz

  • Operational temp: –50°C to +50°C

Other information

Select a item in Variations-tab to see specific technical information.