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Mechanical temperature controller/ surface-contact thermostat THERMASREG® ALTR with switching output (two-position controller). Suitable for monitoring, controlling and limiting temperatures at pipes or vessels, e.g. in connection with hot-water or underfloor heating systems. The contact temperature controller ALTR is built as one-step device, as an adjustable temperature controller TR (with external setting) or as an adjustable temperature monitor TW (with internal setting).
|Switching capacity (Contact load)||
16 (4) A; 24…250 V AC
at 24 V AC min. 150 mA
|Operating difference||8K (± 1K)|
dust-proof switch block unit as potential-free
single-pole changeover contact
by metal tension spring, 220 mm long
(included in the scope of delivery)
|Max. sensor temperature||+110 °C|
|Electrical connection||0.14 - 1.5 mm² via terminal screws|
ABS (acrylonitrile butadiene styrene), fibre-glass reinforced,
base: steel, galvanised,
top: grey, M 16 x 1.5
|Housing dimensions||38 x 48 x 103 mm|
|Housing temperature||–35...+65 °C|
|Tolerance||Tmin ± 5 K; Tmax ± 5 K|
|Protection class||I (according to EN 60 730)|
|Protection type||IP 40 (according to EN 60 529)|
EMC directive 2014/ 30/ EU,
low-voltage directive 2014/ 35/ EU
Heating: wire contacts C - 1
Cooling: wire contacts C - 2
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