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Variable Auto Transformers

We offer the 'Dimmer Dot' brand range of variable auto transformers (Often referred to as 'Variac').

These units offer a solution where a variable AC supply is required.

The Variable Auto transformer is an efficient, reliable method of controlling AC voltage from zero to line voltage. Note - these units will not provide isolation from the mains.

 

 
  • Single phase and three phase models available
  • Input 240V, output 0-270V
  • Models 2A to 80A
  • Fully enclosed or panel mounting
 
Panel mount type -
 
Type Nom.
Amps
Cont.
Amps
H W L M D Wt
D-11-OB 1 1 100 98 84 28 5 1.6
D-21-OB 2 1.9 132 127 117 92 6.5 3.3
D-41-OB 4 3.9 155 190 175 146 10.2 6.0
D-81-OB 8 7 175 190 175 146 10.2 8.5
D-101-OB 10 9 175 210 192 154 10.2 10
D-151-OB 15 12 190 240 220 176 10.2 14
D-201-OB 20 17 215 290 250 204 14 19
D-281-OB 28 23 215 345 295 238 14 25
 
Enclosed / portable type -
 
Type Nom.
Amps
Cont.
Amps
H W L Wt
D-21-P 2 1.9 155 155 145 4.5
D-41-P 4 3.9 180 220 175 9
D-81-P 8 7 218 220 185 12
D-101-P 10 9 205 235 205 13
D-151-P 15 12 230 265 240 18
D-201-P 20 17 265 325 270 22
D-281-P 28 23 265 380 315 31
D-841-P 84 63 670 440 360 98
 
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