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TECHNICAL SPECIFICATION
Supply Voltage
/- 10% 50/60 Hz
Switching Capacity
4kW Max.
Current Consumption (control circuit)
50mA
Terminals
2.5mm
2
Rising Clamp
Operating Temperature
-20 to 40°C
Protection Rating
IP65
Gland Diameter
Max Cable Entry 2.5mm²
Enclosure Dimensions (WxLxH)
120 x 112 x 50 (mm)
INTRODUCTION
The Infresco-S-4kW is part of a family of controllers designed to provide energy saving when used with quartz infrared halogen
lamps or other heating and lighting products. The ‘S’ model switches to soft-start each time power is applied
The microcontroller-based unit incorporates zero-voltage switching and a soft-start function to eliminate the lamps’ initial high inrush
current – potentially increasing lamp life by as much as 30%. Installation of the unit is simple and once installed is relatively
maintenance-free.
INSTALLATION
Important: Read carefully the following information before installing the unit.
The Infresco-S-4kW should be fixed securely using the four mounting holes accessible from the front of the unit. Remove the lid to
access the mounting holes. To ease installation, a mounting template is provided on the next page to locate the 4 mounting hole
centres.
IMPORTANT! The unit must be positioned with the cable glands facing down.
Wiring
Warning! Ensure all earth wires are connected to maintain earth continuity to the lamp fittings. Isolate the mains
supply before wiring this unit.
The unit is fitted with two cable glands. Only one cable should be fitted per gland to maintain the unit’s IP rating. When fitting two
lamps, refer to wiring diagram for an alternative wiring configuration using a junction box.
The mains supply connects to the terminal block marked ‘LINE’. Connect the supply LIVE to the ‘L’ terminal, NEUTRAL to the ‘N’
terminal and EARTH to the ‘E’ terminal.
The lamps connect to the terminal block marked ‘LOAD’. Connect the load LIVE to the ‘L’ terminal, NEUTRAL to the ‘N’ terminal
and EARTH to the ‘E’ terminal. If two lamps are to be fitted they must be wired in parallel.
Check all wiring - particularly the line and load connections and make sure the cable glands are tightened.
Fusing
It is recommended that fast acting semiconductor type fusing (or MCB) be used in line with the LIVE supply for device and circuit
protection. See SRA Data sheet X10255 for further information.
