
7. Test Basis and Safety Information for Intrinsically Safe Control Circuits (Ex-de and Ex-t)
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MU2B-0375GE51 R0616C
Devices certified for Ex-d and Ex-e as
well as Ex-t:
Always begin with the prefixes „Ex-„! Ex-
TX, Ex-TRM, Ex-TAM.
Example: Ex-TX023, Thermostat -20
…+30 °C, featuring Ex-de and Ex-t.
Exception: Ex-TRM
Because, in this instance, the sensor is
located in the same compartment as the
switching device, in the case of the Ex-
TRM zones 1 and 2 apply in dusty
environments.