Description
Smart Lighting Control for Energy Efficiency
The THC-109 16A Photocell Light Dependent Relay is a high-performance DIN rail light controller designed to automatically manage lighting systems based on ambient brightness. Ideal for street lighting, garden lights, and automatic night lighting, this photoelectric switch ensures energy efficiency by turning lights on when natural light falls below a set level and turning them off when the sun rises. It provides a practical and convenient solution for controlling loads to work exclusively at night.
Reliable Performance in Any Environment
Engineered for durability, the THC-109 is built to withstand varying environmental conditions. Its operation is strictly controlled by light intensity, meaning ambient temperature and humidity do not affect its performance. This stability makes it an excellent choice for outdoor applications where weather conditions can be unpredictable. Whether for highway illumination or residential landscape lighting, this switch guarantees consistent operation.
Precision and Flexibility
The device features a user-adjustable ambient light sensitivity range from 5 to 150 LUX. This allows users to fine-tune the activation point, preventing nuisance tripping caused by temporary shadows or passing car headlights. With a mechanical life of over 100,000 cycles and a robust 16A contact capacity, the THC-109B offers long-term reliability for both commercial and residential projects.
Features
| ItemNo | THC-109 |
| Voltage range | AC220V 50/60Hz |
| Timing error | AC 180-250V |
| Display | 4VA(max) |
| Mechanical life | 10⁵ times (Rated load) |
| Control current | 16A,20A,25A |
| Mounting | DIN rail mounting |
| Contact Capacity | THC109 16A Resistive:16A/250V AC(cosφ =1) THC109 20AResistive:20A/250V AC(cosφ =1) THC109 25AResistive:25A/250V AC(cosφ =1) |
| Ambient Light | <5-150LUX (adjustable) |
| QTY | 100PCS |
| G.W | 15KG |
| N.W | 13KG |
| MEAS | 515×330×325mm |
| Temperature | -10~40℃ |
| Relative humidity | 35~85%RH |









