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You searched for: ETI SST-2 Automatic Freeze Protection Electric Thermostat. Up to 30Amp Heater Loads. On below 40F & off above 42F
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ETI SST-2 Freeze Protection Thermostat


Description

The C-UL-US listed SST-2 Freeze Protection Thermostats replace electromechanical thermostats in cost-sensitive applications requiring ground fault equipment protection (GFEP). The SST-2 is listed by Underwriters Laboratories to Standard UL 873 for Temperature- Indicating and -Regulating Equipment.



The SST-2 operates heaters at temperatures below 40°F (4.4°C) and turns them off above 42°F (5.5°C). The external temperature sensor (supplied) is a NEC Class 2 device rated for wet locations.



The SST-2 features a built-in 30 mA GFEP that is digitally filtered to minimize false tripping. A ground fault must be manually reset with the TEST/RESET switch before heater operation can be resumed. The GFEP function is automatically tested along with the heaters whenever power is applied and once every 24 hours thereafter for additional safety.



The SST-2 includes an alarm relay with an isolated SPDT 1 AMP contact. The alarm relay is reverse acting and is normally closed unless there is a ground fault condition, GFEP circuitry fails a test, or when there is a bad temperature sensor.



The SST-2 Freeze Protection Thermostats operate from automatically selected operating voltages of 120, 208, 240 or 277 volts, single-phase. They control heater loads of up to 30 amps while consuming less than 2 watts when idling. The temperature sensor is an NEC Class 2 device that can be located up to 2,000' (610 m) away from the SST. They operate in non-hazardous environments in a temperature range extending from ?40° to 131°F (?40° to 55°C). The rugged non-metallic enclosure is appropriate for installation in indoor or outdoor locations suitable for NEMA 4x applications.


Specifications


  • Automatic Freeze Protection

  • 40°F (4.4°C) Set Point

  • Automatic Supply Voltage Selection

  • Two-Pole Contactor Switches up to 30 AMP Heater Loads

  • Alarm Relay with Isolated Contact

  • Integral 30mA GFEP

  • Simple to Install and Operate

  • Minimum Energy Costs

  • C-UL-US Listed
















Installation Instructions
Data Sheet
Item CodeDescriptionVendorQuantity
ETI19272
19272 Temperature Sensor
ETI (Environmental Technology Inc.) Ambient High Temperature Sensor with 20 Foot Lead for use with SST-2, SST-3, EUR-5A, APS-4C, SC-40C, APS-3C & GPT-3
ETI (Environmental Tech.)
ETI22744
SST-2 Freeze Protection Thermostat
ETI (Environmental Technology Inc.) Automatic Freeze Protection Electric Thermostat. Up to 30Amp Heater Loads. On below 40F & off above 42F - 120V-277 VAC Single Phase U-L / CSA
ETI (Environmental Tech.)