Landis & Gyr Siemens Power Equipment QAF61
The Landis & Gyr / Siemens QAF61 (P/N: SO2 8810) Temperature Sensor is an industrial frost protection and temperature monitoring sensor designed for HVAC, heating, ventilation, and process control applications. It provides accurate temperature measurement to protect water coils, heat exchangers, and air handling units from freezing, ensuring reliable and efficient operation in commercial and industrial systems.
BRAND
Landis & Gyr
TYPE
Siemens Power Equipment
PART NO.
SO2 8810
MODEL
QAF61
Full Technical Specifications ▶
| Parameter | Value / Description |
|---|---|
| BRAND | Landis & Gyr |
| TYPE | Siemens Power Equipment |
| PART NO. | SO2 8810 |
| MODEL | QAF61 |
| SERIES | POLYGYR |
| Supply Voltage | 24 V AC ±20% |
| Frequency | 50–60 Hz |
| Power Consumption | 1.2 VA |
| Relay Output Rating | 220 V AC, 5 A |
| Ambient Operating Temperature | -15°C to +50°C |
| Function | Frost protection controller for HVAC air handling units and ventilation systems |
| Output Contacts | Relay Outputs (Q1, Q2, Q3) |
| Compatible Sensor Series | QAE219 / QAD219 |
| Made In | Switzerland |
| REF NO | 1400 |
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