Product Range: ATC
- Auto Transformer Speed Controller

The ATC range of fan speed controllers are all step auto transformer type, available for use with single and 3 phase voltage controllable fans. Transformer speed controllers regulate the voltage output whilst maintaining a true sine wave. The great advantage of this type of control is the low motor noise (humming) and almost no EMC emission problems.
 

Single Phase

Models have grey (RAL7035) plastic enclosures, with a 5 position rotary selector switch. The on/off switch is a separate double pole illuminated rocker type. All models have internal motor protection fusing. All are suitable for 2 or 3 wire connections.

 
Three-Phase

Models have grey (RAL7032) metal enclosures, with a 6 position rotary selector switch, this switch incorporates a “0” off position. When in the off position all incoming 3 phases are broken. All models have ventilation top and bottom. The hinged doors are locked with a removable key.

 
Optional Extras:

• Both single and 3 phase models are available for use with fan motors having “TK” (thermal contacts) protection.
• Thermal high temperature trips (manual reset) monitoring internal temperature that break the incoming supply on tripping.
• Higher current ratings available to special order.

 
TYPE MAX FULL LOAD
CURRENT
(AMPS)
DIMENSIONS
HxWxD(mm)
WEIGHT (kg) ENCLOSURE IP
RATING
ELECTRICAL SUPPLY
 ATC1-2 2.00 240 x 190 x 90 2.60 PLASTIC IP51 230V AC 1PH
ATC1-4 4.00 240 x 190 x 90 3.00 PLASTIC IP51 230V AC 1PH
ATC1-7 7.00 300 x 220 x 120 5.25 PLASTIC IP51 230V AC 1PH
ATC1-9 9.00 300 x 220 x 120 6.20 PLASTIC IP51 230V AC 1PH
ATC1-12 12.00 300 x 220 x 120 8.30 PLASTIC IP51 230V AC 1PH
ATC3-2 2.00 300 x 300 x 150 11.50 METAL IP51 400V AC 3PH
ATC3-5 5.00 300 x 300 x 150 15.00 METAL IP51 400V AC 3PH
ATC3-7 7.00 300 x 300 x 150 18.64 METAL IP51 400V AC 3PH
ATC3-10 10.00 400 x 300 x 200 23.40 METAL IP51 400V AC 3PH
ATC3-14 14.00 400 x 300 x 200 35.70 METAL IP51 400V AC 3PH
           
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