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2CSM229921R1341 ABB TL1 Twilight Switch 2–200 lx with External Sensor
ABB TL1 is a single-channel DIN-rail twilight switch with an adjustable 2–200 lx brightness range and supplied TLs external sensor for automatic ambient-light-controlled switching of lighting circuits.
£104.27
Why Choose the ABB TL1 Twilight Switch?
The ABB TL1 is a compact single-channel modular twilight switch designed to switch lighting automatically according to the measured ambient light level. As part of the ABB TL Line twilight switch range, it provides dependable dusk-to-dawn control for exterior and building lighting applications while occupying only one module on a DIN rail.
The TL1 operates in conjunction with an external TLs light sensor, which is supplied with the switch and detects whether ambient light is above or below the selected threshold. Its adjustable 2–200 lx brightness range enables the switching point to be matched to the application, while the unit is factory preset to approximately 10 lx for convenient commissioning.
A built-in switching delay helps prevent unnecessary operation when light intensity changes briefly because of vehicle headlights, lightning or other temporary conditions. Two LED indicators provide clear visual information for the setpoint and relay contact status, making the ABB TL1 a practical solution for automatic lighting control in gardens, entrances, car parks, courtyards and other exterior areas.
Key Advantages
- Automatic ambient-light-controlled switching for lighting circuits.
- Wide 2–200 lx adjustable brightness range.
- Factory preset to approximately 10 lx for convenient commissioning.
- External TLs light sensor supplied with the twilight switch.
- Switching delay helps prevent unnecessary operation caused by temporary light changes.
- Two LED indicators show the selected threshold and contact status.
- Space-saving 1-module DIN-rail design for distribution boards and control panels.
Key Features
- ABB TL Line modular twilight switch.
- Single-channel lighting control.
- 2–200 lx adjustable switching threshold.
- Factory preset brightness threshold of approximately 10 lx.
- Supplied with separate ABB TLs external sensor.
- Integrated switching delay for stable operation.
- Two LED indicators for threshold and contact status.
- Front-accessible brightness adjustment.
- DIN-rail mounting for modular electrical installations.
- Compact 17.5 mm / 1-module width.
Reliable Automatic Twilight Control
The ABB TL1 automatically operates connected lighting according to the ambient brightness detected by its external sensor. When daylight moves above or below the selected threshold, the switch controls the lighting circuit accordingly, providing automatic dusk-to-dawn operation without requiring daily manual switching.
The integrated switching delay reduces unwanted switching caused by short-lived variations in light intensity, while the separate TLs sensor can be positioned where it can accurately monitor natural daylight. This combination makes the TL1 particularly suitable for energy-conscious automatic control of exterior lighting.
Typical Applications
- Garden and landscape lighting.
- Car park and pathway lighting.
- Building entrance and courtyard lighting.
- Exterior commercial lighting.
- Security and perimeter lighting.
- Shopfront and façade lighting.
- Lighting requiring automatic dusk-to-dawn operation.
Technical Specifications
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| Device Type | Light-Dependent Relay | |
|---|---|---|
| Mounting Type | DIN rail | |
| Switching Current (A) | 16 A | |
| Series | TL Line | |
| ABB order code | 2CSM229921R1341 | |
| GTIN / EAN | 8012542299219 | |
| Product type | Modular twilight switch | |
| Number of channels | 1 | |
| Brightness range | 2–200 lx | |
| Factory preset brightness | 10 lx | |
| Rated supply voltage | 110–230 V AC | |
| Rated frequency | 50–60 Hz | |
| Contact configuration | 1NO | |
| Rated switching current | 16 A | |
| Protection rating | IP20 | |
| External sensor | ABB TLs supplied | |
| Terminal type | Screw terminals | |
| Mounting type | DIN rail | |
| Module width | 1 module | |
| Dimensions (H × W × D) | 86 × 17.5 × 65 mm | |
| Net weight | approx. 0.155 kg |
Frequently Asked Questions
What is the ABB TL1 used for?
The TL1 is used to automatically switch lighting according to ambient light levels, making it suitable for exterior lighting and other dusk-to-dawn control applications.
What brightness range does the ABB TL1 provide?
The TL1 has an adjustable switching threshold of 2–200 lx and is factory preset to approximately 10 lx.
Is an external sensor supplied with the ABB TL1?
Yes. The ABB TLs external light sensor is supplied in the same package as the TL1 and is also available separately as a replacement accessory.
Why does the ABB TL1 have a switching delay?
The switching delay helps prevent unnecessary operation when ambient light changes only briefly, such as from vehicle headlights, lightning or temporary shadows.
How is the ABB TL1 installed?
The TL1 is a compact 1-module DIN-rail device designed for installation in electrical distribution boards and control panels, with the supplied external sensor positioned to monitor ambient daylight.
Trusted ABB Lighting Control Technology
ABB TL Line twilight switches provide reliable automatic lighting control by monitoring ambient brightness and switching connected lighting only when required, helping improve convenience and reduce unnecessary energy consumption in exterior lighting installations.
