Frost thermostat STT900 5127040000

Frost thermostat STT900 5127040000
Price: $170.03 ×
= 170.03
Manufacturer: Schneider Electric
Model: 010.004.110
Weight: 482 g
In supplier's stock
The frost protection thermostats are used for air, or water-side temperature monitoring of heat exchangers, hot water circulation systems, water/air heaters, e.g. in ventilation and air conditioning systems and to avoid frost damage. The product features a small operating differential and high reproducibility. Resetting of the STT900 occurs automatically.
The output would typically switch off ventilators, close outside air flaps, open up air heating valves, switch on air heat pumps, switch off  refrigeration compressors, switch off  air humidifiers, or initiate a visual and/or acoustic frost alarm.
Location of  these items is not critical, even in harsh environments as they are all rated to IP65.
Main characteristics
Switching capacity10 (2) A, 250Vac
gold-plated switching contacts allow signal voltage switching < 24 V
Setting range-10 °C ...+ 15 °C / 14 °F... 59 °F
factory setting to w = 5 °C (41 °F)
Operating difference2 ± 1 K (3.6 ± 1.8 °F)
Reproducibility± 0.5 K (± 0.9 °F)
Contactdustproof micro switch as single-pole potential-free changeover contact.
Sensor responding length: ca. 40 cm
Length of capillary tube0.6 m (2 ft.)
Resettingautomatic
Permissible mediumair
Ambient temperatures:maximum operating temperature: 70 °C (158 °F)
minimum operating temperature: + min. 2 °C (min. 3.6 °F)
Storage / transport- 30 ...+ 70 °C (- 22 ...+ 158 °F)
Process connectionby mounting clamps (included in the scope of delivery)
Connecting headplastic, material polyamide, 30 % glass-globe-reinforced, color pure white (similar RAL 9010)
Размеры120 х 80 х 50 mm
Other materials:
Mechanical sheet metal parts
Capillary tube
Capillary tube filling
Switching contacts

galvanized steel
copper
R 507
Ag / Ni (90% / 10%) gold-plated (3μm)
Electrical connection0.14 - 2.5 mm²
Cable unionM 20 x 1.5, including strain relie
Protection classI (according to EN 60 730-1)
IP 65 (according to EN 60 529)
StandardsCE conformity, EMC directive 89 / 336 / EWG, Low-voltage directive 73 / 23 / EWG
Output Contact Function1 - 4 danger of frost / sensor breakage
1 - 2 normal operation
Frost thermostats series STT
Model numberPart numberCapillary lengthReset typePermissible medium
STT90051270400000.6 m (2 ft.)AutomaticAir
STT90151270100001.8 m (5.9 ft.)AutomaticWater
STT90251270200003 m (9.8 ft.)AutomaticAir
STT90351270000006 m (19.7 ft.)AutomaticAir
STT904512703000012 m (39 ft.)AutomaticAir
STT91051270900000.6 m (2 ft.)ManualAir
STT91151270600001.8 m (5.9 ft.)ManualWater
STT91251270700003 m (9.8 ft.)ManualAir
STT91351270500006 m (19.7 ft.)ManualAir
STT914512708000012 m (39 ft.)ManualAir

Specifications frost thermostats series STT [47 k]
HVAC Sensors Catalog (2018) Schneider Electric [7,241 k]
Installation instructions frost thermostats series STT [139 k]