Thermostick Elettrotecnica – M‑ST26 MAX – Bimetal Heat Detector ATEX

The Thermostick M‑ST26 MAX (also referred to as MS‑MAX) is an ATEX/IECEx-certified fixed-temperature heat detector built into a rugged aluminium enclosure. It uses bimetallic (“Max only”) sensing technology to close a relay output upon reaching a pre-set temperature threshold within the range of 0 °C to 180 °C. Designed for harsh industrial environments, this detector ensures reliable operation in explosive atmospheres, with robust housing, ¾″ NPT cable entries, and an easily adjustable detection temperature.

Key Features:

• Model / P/N: M‑ST26 MAX (also MS‑MAX)  

• Sensor Type: Fixed-temperature bimetallic detector (Max-only alarm)

• Temperature Range: Customer-specified between –20 °C and 190 °C (standard example: 88 °C)  

• Output: Internal normally-open contact that closes upon reaching set point  

• Construction:

  • Nickel-plated brass sensor body with ¾″ NPT threaded inlet

  • Bimetal sensor mounted in aluminium ATEX junction box with terminal block, dual glands, and stainless steel mounting bracket  

• Certifications: ATEX / IECEx Flameproof (Ex d), Zone 1/21; T5/T6, IP66/IP68