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A2G-65
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WIKA · Temperature measurement · Family A2G

Frost protection thermostat

Frost protection thermostat for air-side temperature monitoring to prevent frost damage in HVAC systems with automatic and manual reset.
Range
-10…12 °C
Output
Change-over contact, max. AC…
Accuracy
±0.5 °C
Protection
IP65
RoHSWEEEEMCCE
Price
On request
Depends on configuration
Request a quote
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Description

The model A2G-65 frost protection thermostat is used for monitoring the air-side temperature of water/air heating coils in ventilation and air-conditioning systems. The small temperature switch differential, the high reproducibility and the automatic resetting make this temperature switch an ideal thermostat for ventilation and air-conditioning.

The temperature-controlled switching output of the A2G-65 can trigger the following measures when the temperature drops below the selected set point (e.g. if there is a risk of frost): Ventilator OFF , external air damper CLOSED, pump ON, activation of a visible/audible warning etc.

Frost protection thermostat, model A2G-65

Special features

  • Simple mounting
  • Compact and heavy-duty version
  • High reproducibility
  • Integrated switching output
  • With automatic resetting
Identification
ModelA2G-65
Product familyA2G
SubcategoryFrost protection thermostat
Measuring range
Temperature ranges−10…+12 °C
Accuracy
Accuracy class±0.5 °C
Process conditions
Process temperature−8…+70 °C
Electrical characteristics
Output signalChange-over contact, max. AC 250 V, max. 10 A · Change-over contact, max. AC 250 V, 10 A
Electrical connectionScrew terminal, max. 2.5 mm2
Materials
Probe materialCopper
Operating environment
Ambient temperature−30…+70 °C
IP ratingIP65
Certifications and approvals
Certifications
RoHSWEEEEMCCE
Additional details
Sensor typebimetal
Probe length600 mm
ThermowellNo
Datasheet languagesEN
Tables from datasheet
Basic information
Setting range for set point,W-10 …+12 °C [14 ... 53,6 °F] (factory setting: 5 °C [41 °F])
Switch differential2 ±1 °C [3,6 ±1,8 °F], SD
Reproducibility±0.5 °C [±0,9 °F]
Probe response lengthApprox. 600 mm[23.62 in]
Capillary tube■ Material: Copper ■ Capillary tube filling:R 507
Capillary tube length■ 1.8 m[70.86 in], with probe cartridge ■ 3 m[118.11 in] ■ 6 m[236.22 in] ■ 12 m[472.44 in]
Switching output■ Change-over contact, max.AC 250 V, max. 10 A ■ Contact material: Ag/Ni (90 %/10 %) gold-plated 3 µm [118 µin]
Resetting■ Automatic ■ Manual
Connection terminalScrew terminal, max.2.5mm 2
Cable entryCable gland M16 x 1.5
Case material
Lower bodyPA GK30
CoverABS transparent
Standard accessoriesMounting clamps, 6 pieces
Operating conditions
Medium temperature range■ Min. operating temperature:W + min. 2 °C [3,6 °F] ■ Max. operating temperature: 70 °C [158 °F]
Ambient temperature range-30 …70°C[-22 ... 158 °F]
Humidity0 ... 85 %relative humidity (non-condensing)
Ingress protectionIP65
DescriptionRegion
EU declaration of conformityEuropean Union
EMCdirective
RoHS conformity
WEEE directive
Certificates
Certificates2.2 test report per EN 10204 (e.g. state-of-the-art manufacturing, material proof, indication accuracy)