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Autotransformers

An autotransformer, also known as a step-down transformer, is an electrical transformer with only one winding. The winding has at least 3 taps where electrical connections are made. Autotransformers have the benefit of being small, light and cheap compared to dual-winding transformers.

Autotransformers are used to step up or step down voltages in the 110V-115V-120V range and 220V-230V-240...

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RS PRO 100VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
RS PRO 100VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
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RS Stock No.: 504-183Brand: RS PRO

AED 496.02

AED 496.02 Each (ex VAT)

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1AED 496.02
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RS Pro
220 V ac, 230 V ac, 240 V ac
115V ac
100VA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
65mm
65 x 115 x 78mm
115mm
78mm
-
-
0.934
EN 61558
RS PRO 250VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
RS PRO 250VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
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RS Stock No.: 504-199Brand: RS PRO

AED 770.54

AED 770.54 Each (ex VAT)

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1AED 770.54
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RS Pro
220 V ac, 230 V ac, 240 V ac
115V ac
250VA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
81mm
81 x 136 x 100mm
136mm
100mm
-
-
0.947
EN 61558
RS PRO 500VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
RS PRO 500VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
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RS Stock No.: 504-195Brand: RS PRO

AED 1,103.18

AED 1,103.18 Each (ex VAT)

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1AED 1,103.18
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RS Pro
220 V ac, 230 V ac, 240 V ac
115V ac
500VA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
98mm
98 x 145 x 118mm
145mm
118mm
-
-
0.958
EN 61558
RS PRO 50VA Enclosed Autotransformer, 230V ac Primary, 115V ac Secondary
RS PRO 50VA Enclosed Autotransformer, 230V ac Primary, 115V ac Secondary
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RS Stock No.: 504-202Brand: RS PRO

AED 420.32

AED 420.32 Each (ex VAT)

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1AED 420.32
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RS Pro
230V ac
115V ac
50VA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
58mm
58 x 63 x 70mm
63mm
70mm
-
-
0.922
EN 61558
RS PRO 150VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
RS PRO 150VA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
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RS Stock No.: 504-189Brand: RS PRO

AED 593.56

AED 593.56 Each (ex VAT)

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1AED 593.56
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RS Pro
220 V ac, 230 V ac, 240 V ac
115V ac
150VA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
73mm
73 x 120 x 89mm
120mm
89mm
-
-
0.942
EN 61558
RS PRO 1kVA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
RS PRO 1kVA Enclosed Autotransformer, 220 V ac, 230 V ac, 240 V ac Primary, 115V ac Secondary
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RS Stock No.: 504-206Brand: RS PRO

AED 1,985.71

AED 1,985.71 Each (ex VAT)

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1AED 1,985.71
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RS Pro
220 V ac, 230 V ac, 240 V ac
115V ac
1kVA
Enclosed
Chassis Mount, Floor Standing, Wall Mount
-
-
115mm
115 x 192 x 137mm
192mm
137mm
-
-
0.96
EN 61558
Siemens 200VA Autotransformer, 400 → 230V ac Primary
Siemens 200VA Autotransformer, 400 → 230V ac Primary
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RS Stock No.: 144-142Brand: SiemensManufacturers Part No.: 3KC9824-1

AED 2,501.42

AED 2,501.42 Each (ex VAT)

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1AED 2,501.42
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Siemens
400 → 230V ac
-
200VA
-
-
-
-
-
-
-
-
-
-
-
-
Siemens 400VA Autotransformer, 400 → 230V ac Primary
Siemens 400VA Autotransformer, 400 → 230V ac Primary
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RS Stock No.: 143-934Brand: SiemensManufacturers Part No.: 3KC9624-1

AED 2,968.88

AED 2,968.88 Each (ex VAT)

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1AED 2,968.88
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Siemens
400 → 230V ac
-
400VA
-
-
-
-
-
-
-
-
-
-
-
-
Tufvassons Transformator 460VA Autotransformer, 115V Primary, 230V Secondary
Tufvassons Transformator 460VA Autotransformer, 115V Primary, 230V Secondary
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RS Stock No.: 288-3517Brand: Tufvassons TransformatorManufacturers Part No.: PFEA460 115/230V

AED 1,278.06

AED 1,278.06 Each (ex VAT)

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1AED 1,278.06
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Tufvassons Transformator
115V
230V
460VA
-
-
-
-
-
-
-
-
-
-
-
-
Carroll & Meynell 2kVA Autotransformer, 230V ac Primary, 115V ac Secondary, Bobbin Core
Carroll & Meynell 2kVA Autotransformer, 230V ac Primary, 115V ac Secondary, Bobbin Core
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RS Stock No.: 347-6668Brand: Carroll & MeynellManufacturers Part No.: CM2000/A/US

AED 2,230.78

AED 2,230.78 Each (ex VAT)

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1AED 2,230.78
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Carroll & Meynell
230V ac
115V ac
2kVA
-
-
Bobbin
-
205mm
205 x 195 x 260mm
260mm
190mm
-
-
-
-
Block Enclosed Autotransformer, 115 V ac, 230 V ac Primary, 115 V ac, 220 V ac, 230 V ac Secondary
Block Enclosed Autotransformer, 115 V ac, 230 V ac Primary, 115 V ac, 220 V ac, 230 V ac Secondary
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RS Stock No.: 293-2678Brand: BlockManufacturers Part No.: AIM 5.0/2.5

AED 874.34

AED 874.34 Each (ex VAT)

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1AED 874.34
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Block
115 V ac, 230 V ac
115 V ac, 220 V ac, 230 V ac
-
Enclosed
Panel Mount
-
Screw
223mm
223 x 97 x 117mm
97mm
117mm
2.5 A, 5.0 A
-
-
-
Carroll & Meynell 3kVA Autotransformer, 230V Primary, 114.1V ac Secondary, Bobbin Core
Carroll & Meynell 3kVA Autotransformer, 230V Primary, 114.1V ac Secondary, Bobbin Core
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RS Stock No.: 436-8883Brand: Carroll & MeynellManufacturers Part No.: CM3000/A/US

AED 2,265.64

AED 2,265.64 Each (ex VAT)

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1AED 2,265.64
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Carroll & Meynell
230V
114.1V ac
3kVA
-
-
Bobbin
-
205mm
205 x 195 x 260mm
260mm
190mm
-
-
-
-
Carroll & Meynell 1kVA Autotransformer, 230V ac Primary, 114.2V ac Secondary, Bobbin Core
Carroll & Meynell 1kVA Autotransformer, 230V ac Primary, 114.2V ac Secondary, Bobbin Core
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RS Stock No.: 347-6652Brand: Carroll & MeynellManufacturers Part No.: CM1000/A/US

AED 1,934.10

AED 1,934.10 Each (ex VAT)

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1AED 1,934.10
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Carroll & Meynell
230V ac
114.2V ac
1kVA
-
-
Bobbin
-
205mm
205 x 195 x 260mm
260mm
190mm
-
Thermal Cutout
-
-
Carroll & Meynell 30kVA Autotransformer, 380 V, 400 V, 415 V Primary, 380 V, 400 V, 415 V Secondary, Bobbin Core
Carroll & Meynell 30kVA Autotransformer, 380 V, 400 V, 415 V Primary, 380 V, 400 V, 415 V Secondary, Bobbin Core
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RS Stock No.: 436-8877Brand: Carroll & MeynellManufacturers Part No.: CMA30K/FM0

AED 7,819.77

AED 7,819.77 Each (ex VAT)

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1AED 7,819.77
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Carroll & Meynell
380 V, 400 V, 415 V
380 V, 400 V, 415 V
30kVA
-
-
Bobbin
-
420mm
420 x 350 x 260mm
350mm
260mm
-
-
-
-
Carroll & Meynell 10kVA Enclosed Autotransformer, 380 V, 400 V, 415 V Primary, 380 V, 400 V, 415 V Secondary
Carroll & Meynell 10kVA Enclosed Autotransformer, 380 V, 400 V, 415 V Primary, 380 V, 400 V, 415 V Secondary
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RS Stock No.: 436-8861Brand: Carroll & MeynellManufacturers Part No.: CMA10K/FM0

AED 5,905.94

AED 5,905.94 Each (ex VAT)

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1AED 5,905.94
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Carroll & Meynell
380 V, 400 V, 415 V
380 V, 400 V, 415 V
10kVA
Enclosed
Floor Standing
-
-
420mm
420 x 270 x 325mm
270mm
325mm
-
-
-
-
Block 2kVA Open Frame Autotransformer, 480 V ac, 500 V ac Primary, 400 V ac Secondary, 3 UI 75/41,5 Core
Block 2kVA Open Frame Autotransformer, 480 V ac, 500 V ac Primary, 400 V ac Secondary, 3 UI 75/41,5 Core
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RS Stock No.: 738-7806Brand: BlockManufacturers Part No.: AT3 2-48/50-4

AED 1,170.54

AED 1,170.54 Each (ex VAT)

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1AED 1,170.54
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Block
480 V ac, 500 V ac
400 V ac
2kVA
Open Frame
Chassis Mount, Floor Standing, Wall Mount
3 UI 75/41,5
Screw
155mm
155 x 110 x 155mm
110mm
155mm
-
-
-
-
Block 10kVA Open Frame Autotransformer, 380 V ac, 415 V ac Primary, 400 V ac Secondary, 3 UI 90/31,5 Core
Block 10kVA Open Frame Autotransformer, 380 V ac, 415 V ac Primary, 400 V ac Secondary, 3 UI 90/31,5 Core
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RS Stock No.: 738-7852Brand: BlockManufacturers Part No.: AT3 10-38/42-4

AED 1,410.88

AED 1,410.88 Each (ex VAT)

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1AED 1,410.88
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Block
380 V ac, 415 V ac
400 V ac
10kVA
Open Frame
Chassis Mount, Floor Standing, Wall Mount
3 UI 90/31,5
Screw
220mm
220 x 105 x 175mm
105mm
175mm
-
-
-
-
Block 15kVA Open Frame Autotransformer, 440 V ac, 460 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
Block 15kVA Open Frame Autotransformer, 440 V ac, 460 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
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RS Stock No.: 738-7880Brand: BlockManufacturers Part No.: AT3 15-44/46-4

AED 2,804.97

AED 2,804.97 Each (ex VAT)

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1AED 2,804.97
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Block
440 V ac, 460 V ac
400 V ac
15kVA
Open Frame
Chassis Mount, Floor Standing, Wall Mount
3 UI 114/64
Screw
267mm
267 x 150 x 215mm
150mm
215mm
-
-
-
-
Block 3.5kVA Open Frame Autotransformer, 200 V ac, 208 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
Block 3.5kVA Open Frame Autotransformer, 200 V ac, 208 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
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RS Stock No.: 738-7812Brand: BlockManufacturers Part No.: AT3 3,5-20/21-4

AED 2,692.88

AED 2,692.88 Each (ex VAT)

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1AED 2,692.88
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Block
200 V ac, 208 V ac
400 V ac
3.5kVA
Open Frame
Chassis Mount, Floor Standing, Wall Mount
3 UI 114/64
Screw
267mm
267 x 150 x 220mm
150mm
220mm
-
-
-
-
Block 3.5kVA Open Frame Autotransformer, 220 V ac, 230 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
Block 3.5kVA Open Frame Autotransformer, 220 V ac, 230 V ac Primary, 400 V ac Secondary, 3 UI 114/64 Core
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RS Stock No.: 738-7821Brand: BlockManufacturers Part No.: AT3 3,5-22/23-4

AED 2,698.82

AED 2,698.82 Each (ex VAT)

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1AED 2,698.82
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Block
220 V ac, 230 V ac
400 V ac
3.5kVA
Open Frame
Chassis Mount, Floor Standing, Wall Mount
3 UI 114/64
Screw
267mm
267 x 150 x 220mm
150mm
220mm
-
-
-
-