Transco SSS Photoelectric Sunset Switch 15A 240V IP66

Description

Lights On at Dusk. Lights Off at Dawn. Automatically.

The Transco SSS is an IP66 rated photoelectric sunset switch — a day/night optical sensor that automatically switches connected lighting loads on at dusk and off at dawn, without timers, manual intervention, or programming. Rated at 15A and 240V AC with an adjustable light sensitivity range of 5 to 100 LUX, it suits a wide range of outdoor lighting control applications. Grey polycarbonate construction, surface mount, sold individually.

• Transco — IP66 rated photoelectric sunset switch
• Grey impact-resistant polycarbonate construction
• Automatic day/night switching — on at dusk, off at dawn
• Adjustable light sensitivity: 5–100 LUX
• Rated 15A at 240V AC
• 3 wire connection
• Screw terminal — accommodates cable 0.75–6mm²
• IP66 ingress protection — dust tight, protected against powerful water jets
• Surface mount — fixed by screws
• Cable entry: 1 x 25mm top, 2 x 25mm bottom, 1 rear entry 20/25mm
• Dimensions: H100 mm x W100 mm x D70 mm

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Why the Transco SSS Sunset Switch Is the Smart Choice for Outdoor Lighting Control

A photoelectric sunset switch removes the need for manual switching or timer programming entirely — it reads ambient light levels continuously and switches the connected load on when light falls below the set threshold at dusk, and off when light rises above it at dawn. The 5 to 100 LUX adjustable sensitivity range gives precise control over the trigger point, allowing the switch to be calibrated for the specific lighting conditions of the installation location — whether that's a well-lit urban environment or a darker rural site where street lighting or other ambient sources affect the ambient lux reading.

At 15A and 240V AC, the SSS can control a substantial lighting load directly — standard outdoor lighting circuits, car park lighting, security lighting, garden lighting, and building perimeter lighting are all typical applications. The IP66 rating means it is dust tight and protected against powerful water jets from any direction, making it suitable for fully exposed outdoor installations without any additional enclosure. The screw terminals accommodate cable from 0.75 to 6mm², covering the full range of standard Australian wiring sizes used in lighting circuits.

Multiple cable entry options — 1 x 25mm top entry, 2 x 25mm bottom entries, and a rear entry accepting 20mm or 25mm conduit — give full flexibility for the cabling approach used in the installation. Surface mount by screws means no wall recess is required. The H100 x W100 x D70mm housing is compact enough for most wall and pole surface mount locations without being obtrusive. Sold individually — one SSS unit per lighting circuit or per switched zone as required.

Q: How does the Transco SSS sunset switch know when to turn lights on and off?
A: The SSS uses a built-in photoelectric optical sensor that continuously measures ambient light levels in LUX. When the measured light level falls below the set threshold (adjustable between 5 and 100 LUX), the switch turns the connected load on. When light levels rise above the threshold at dawn, the switch turns the load off. No timer programming or manual intervention is required.

Q: What load can the Transco SSS sunset switch control?
A: The SSS is rated at 15A and 240V AC, making it suitable for directly controlling standard outdoor lighting circuits including security lighting, car park lighting, garden lighting, and building perimeter lighting up to the 15A load rating.

Q: Is the Transco SSS suitable for fully exposed outdoor installations?
A: Yes. The SSS carries an IP66 rating — dust tight and protected against powerful water jets from any direction. This makes it suitable for fully exposed outdoor wall and pole surface mount installations without requiring an additional weatherproof enclosure.