Frost thermostat STT912 5127070000

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Model: 010.004.117

Manufacturer: Schneider Electric

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 STT912 are designed to be reset manually by a reset button.

☎ Price by call

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 capacity	10 (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 difference	2 ± 1 K (3.6 ± 1.8 °F)
Reproducibility	± 0.5 K (± 0.9 °F)
Contact	dustproof micro switch as single-pole potential-free changeover contact. Sensor responding length: ca. 40 cm
Length of capillary tube	3 m (9.8 ft.)
Resetting	manual
Permissible medium	air
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 connection	by mounting clamps (included in the scope of delivery)
Connecting head	plastic, material polyamide, 30 % glass-globe-reinforced, color pure white (similar RAL 9010)
Размеры	120 х 80 х 55.1 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 connection	0.14 - 2.5 mm²
Cable union	M 20 x 1.5, including strain relie
Protection class	I (according to EN 60 730-1) IP 65 (according to EN 60 529)
Standards	CE conformity, EMC directive 89 / 336 / EWG, Low-voltage directive 73 / 23 / EWG
Output Contact Function	1 - 4 danger of frost / sensor breakage 1 - 2 normal operation

Frost thermostats series STT

Model number	Part number	Capillary length	Reset type	Permissible medium
STT900	5127040000	0.6 m (2 ft.)	Automatic	Air
STT901	5127010000	1.8 m (5.9 ft.)	Automatic	Water
STT902	5127020000	3 m (9.8 ft.)	Automatic	Air
STT903	5127000000	6 m (19.7 ft.)	Automatic	Air
STT904	5127030000	12 m (39 ft.)	Automatic	Air
STT910	5127090000	0.6 m (2 ft.)	Manual	Air
STT911	5127060000	1.8 m (5.9 ft.)	Manual	Water
STT912	5127070000	3 m (9.8 ft.)	Manual	Air
STT913	5127050000	6 m (19.7 ft.)	Manual	Air
STT914	5127080000	12 m (39 ft.)	Manual	Air