Panel-mounted thermostats

Panel-mounted thermostats from the ETH series monitor thermal processes. The devices are available as safety temperature monitors (STW) and safety temperature limiters (STB). In the event of a malfunction the STB places the system being monitored in a safe operating status.

Technical data

general technical data
Switching functionSafety temperature monitor (STW); restart lock with safety temperature limiter (STB); use of the safety temperature monitor (STW) as a safety temperature limiter (STB); self-monitoring with safety temperature limiter (STB) and safety temperature monitor (STW)
Control range, gas-filledMax. 20 to 500 °C
Control range, liquid-filledMax. 50 to 300 °C
Capillary lengthAs standard 1000 mm, maximum 5000 mm
Capillary materialCopper (Cu) ø 1.5 mm or stainless steel (CrNi) ø 1.5 mm
Temperature probe materialCopper (Cu) material number 2.0090, hard soldered, stainless steel (CrNi) ø 1.5 mm material number 1.4571
Maximum switching capacityAC 230 V 10 %, 10 (2) A, cos ϕ = 1 (0.6), DC 230 V 10 %, 0.25 A with switching differential
Process connectionPlain cylindrical probe (as a standard feature); protection tube for screwing in
Insertion lengthStandard lengths: 100, 120, 150, 200, or 300 mm

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Declaration of Conformity / White Paper
Declaration of Conformity / White Paper
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