Astra Automatyka > Produkty > Czujniki i przetworniki > Termostaty > Termostat bezpieczeństwa z pokrętłem nastawczym, wyłącznikiem i automatycznym resetem STWTR HONEYWELL
Termostat bezpieczeństwa z pokrętłem nastawczym, wyłącznikiem i automatycznym resetem STWTR HONEYWELL

Temperature monitors and temperature limiters are tested according to Pressure Equipment Directive 97/23 EC, meet the requirements of DIN EN14597 and can thus be used for heating systems according to DIN EN12828, for steam and hot water systems and for district heating systems. The devices with safety function (STW, STB) are self monitoring, i.e. in the event of breakage or leaks in the measuring system the circuit is opened and the system is switched off towards the safe side.


Tabela doboru produktu
Function Safety temperature
monitor and controller
Safety temperature
limiter and monitor
Safety temperature
limiter and controller
Satting range 20 … 150°C 30 … 110°C 30 … 110°C
Satting STW internal
TR external
STW internal
TW internal
STB internal
TR external
accesible from
Satting wheel for TR Reclosing button Reclosing button and
satting wheel for TR
Contact 2 x changeover NC (STB)  and
changeover (TW)
NC (STB)  and
changeover (TR)
lockout (internal)
no yes yes
Max. temperature
at sensor
175°C 130°C 130°C
Imersion depth 150 mm 150 mm 150 mm
Permitted pressure,
brass immersion tube
25 bar 25 bar 25 bar
Permitted pressure,
stainless steel
immersion tube
40 bar
40 bar
40 bar
Szczegóły produktu

Parametr Wartość
Protection class IP54
Housing material aluminium diecasting with plastic cover
Ambient temperature 0 ... 80°C
Switch function/capacity safety control switch SPDT 230 VAC, 10 A; shut-off temperature switch SPST 230 VAC, 10 A
Mechanical lock/reset shut-off mechanical lock, automatic reset
Immersion depth 150 mm
Certificates TUEV-approval TR / STW (STB)89 907 S
Thermostat application thermostat application
Thermostat functions temp. setting inside + outside, reset inside
Temp. setpoint range 20 ... 150°C
Mounting place in pipe
Immersion well material red brass, nickel plated
Immersion well thread R ½″
Max. perm. temp. at sensor 175°C
Additional description safety control switching differential approx. 4% of setpoint value. Shut-off temperature: 20..150°C adjustable.
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Termostat bezpieczeństwa z pokrętłem nastawczym, wyłącznikiem i automatycznym resetem STWTR HONEYWELL
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