THC-109 is a light dependent relay series for automatic lighting control. It switches lighting loads according to ambient light level and is suitable for applications such as outdoor lighting, signage, garden lighting and other circuits that need dusk-to-dawn control.
Series Range
| Model | Control current | Contact capacity |
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| THC-109 16A | 16A | 16A / 250VAC resistive load |
| THC-109 20A | 20A | 20A / 250VAC resistive load |
| THC-109 25A | 25A | 25A / 250VAC resistive load |
Technical Characteristics
| Voltage range | AC220V, 50/60Hz |
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| Operating voltage range | AC180-250V |
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| Power consumption | 4VA max. |
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| Ambient light setting | <5-150 lux, adjustable |
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| Mechanical life | 10^5 operations at rated load |
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| Mounting | DIN rail mounting |
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Application Notes
- The relay is intended for automatic switching based on ambient-light level.
- The adjustable lux range helps match the switching threshold to the installation environment.
- Versions are separated mainly by rated control current: 16A, 20A and 25A.
