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Transformers（Number of phases/winding：Other）

A transformer is a device that changes the voltage, also called a power transformer. Performs the step-down and step-up of AC voltage, and makes adjustments necessary for use in electronic devices. The transformer has a structure in which a primary coil and a secondary coil are wound around an iron core. Depending on the position of the iron core and the coil, it is divided into an inner iron type where the coil covers the iron core and an outer iron type where the iron core is outside the coil. Wiring methods are classified into two types: single-phase, which is a 100 V power supply used in offices, and three-phase, which is a 200 V power supply that sends a large amount of power. The winding of the coil is usually compound wound in which the primary and secondary sides are insulated, but there are also smaller auto transformers. There are also types that can be connected with the cover attached, types that can be used overseas and in Japan, portable types that are suitable for on-site construction with different power and voltage, etc.

Configure

Specification/Dimensions

Primary voltage(V)
AC0-380-400-440

0-200

0-200-220

AC0-200-220

AC0-200-210-220

AC0-100-110

0 → 230 → 400V ac

2 x 115V ac

15 → 400V ac

100

AC100

AC100-220

AC100-220 to 240

AC100-200

AC100-120-200-220-240

AC100-110

AC100-110-120

AC100-110-120-200-220-240

AC100-110-120-200-220-230-240

AC110 to 130

AC110～130-220～240

AC110 to 240

115 V ac, 230 V ac

115V ac, 230V ac

AC170 to 260

AC180-200-220

AC190-200-210

AC190-200-210-220-230-240

200

AC200

AC200-220

AC200-220-240

AC200-220-230-240

AC200-208-220-230-240

220

AC220

220-200-0

AC220 to 230

AC220 to 240

230V ac

230 V ac, 245 V ac, 400 V ac, 415 V ac

240

240V

AC240

380

AC380-400-440

AC380-400-420-440-460-480

AC380-400-415-440

415V

420
Clear

Capacity(kVA)
0.005

0.01

0.02

0.022

0.024

0.03

0.05

0.055

0.06

0.064

0.075

0.1

0.12

0.15

0.2

0.3

0.3A

0.35

0.4

0.5

0.5 or Less

0.5A

0.51

0.55

0.6

0.7

0.75

1

1A

1.5

2

2A

2.5

3

3A

4

5

5A

6

7.5

8

10

10A

12

15

20

50
Clear

Secondary voltage(V)
AC0-200-220

0-100

0-100-110

AC0-100-110

AC0-100-105-110

AC0-24-26

0 → 240 V, 0 → 270 V

0 → 415 V, 0 → 470 V

2 x 6V ac

2 x 9V ac

2 x 12V ac

2 x 24V ac

2 x 115V ac

4 x 0-55-60V ac

AC6-8-10-12

9V ac

AC10-12

12V ac

AC12

AC12-15-20-24

AC14-16-18-20

18V ac

24

24V ac

AC24

±24V ac

AC24-32-35-38

28

100

AC100

AC100-220 to 240

AC100-120-200-220-240

AC100-115

AC100-115-200

AC100-110

AC100-110-120

AC100-110-120-200-220-240

AC100-110-120-200-220-230-240

AC100-110-115

AC100-110-115-120

110

110-100-0

115

117

AC120

200

AC200

AC200-220

AC200-220-240

AC200-220-230-240

220

AC220 to 230

230V ac

235

AC240
Clear

Number of phases/winding
- Single-phase/single-winding
- Single-phase/Double-winding
- Three-phase/double-winding
- Other
Clear

Insulation type
- A type
- E Type
- B Type
- F type
- H type
Clear

Input/output terminal shape
- Screw terminal block
- Up screw type terminal block
- Other
Clear

Dimension vertical(mm)
35

36

39

41

43

45

50

51

52

55

60

65

67

69

71

80

81

84

85

87

88

89

90

92

93

94

95

96

97

98

100

102

103

105

107

109

110

111

112

112.5

113

115

116

116.5

117

118

120

122

127

128

130

131

132

135

140

141

143

144.5

145

147

150

152

155

155.5

156

158

160

164

170

172

175

176

180

182

183

185

187

190

195

196

197

200

203

205

209

210

211

215

220

224.5

225

227

230

235

240

248

250

260

265

270

280

295

300

320

350

370

380

400

430

450

460

500

550
Clear

Shield presence
- Available
- NA
Clear

With/without Case
- Available
- NA
Clear

Representative Standard
- CE
- UL
- CUL
- TUV
Clear

Dimension width(mm)
43

50

51

60

68

69

70

75

76

77

79

80

81

82

85

86

88

89

90

90mm

94

96

99

101

105

106

108

109

110

117

120

122

128

130

133

134

135

136

144

145

146

150

152

153

154

155

157

159

160

170

175

177

178

180

186

200

204

206

210

215

220

224

250

260

270

280

290

330

360

410
Clear

Dimension depth(mm)
36

39

40

42

44

45

46

48

50

51

54

55

58

59

63

67

68

77

80mm

83

85

86

88

89

90

92

94

95

97

98

99

100

101

102

103

104

105

108

109

110

111

114

115

116

117

118

119

120

122

123

128

131

134

135

140

142

143

145

149

150

155

157

160

165

170

172

173

175

178

180

182

183

185

186

188

190

195

198

200

203

210

211

213

215

220

225

226

230

235

240

247

250

260

262

270

280

300

320

350

360

370

430

450

500
Clear

Brand	AIHARA (1) ESCO (0) KAMADASIGNAL (0) PATLITE (KASUGA) (0) RS Pro (0) SWALLOW ELECTRIC (3) Schneider Electric (0) TDK (0) TOYOGIKEN (0) TOYOZUMI (0)
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Days to Ship	All Same day 1 Day(s) or Less 3 Day(s) or Less 5 Day(s) or Less 6 Day(s) or Less Others

4 items

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: 30; 60; 90

Compare

Single-Phase/Three-Phase Transformer Case, BK Series

SWALLOW ELECTRIC

• Steel case for transformer BK series.
• Steel case for indoor used transformer.
• Standard semi-gloss white color for indoor used (Munsell 5Y7/1).
• 16 sizes of cases are available which is applicable for several size of transformer’s capacities including single phase transformer (200VA-500kVA) and Three phase transformer (50VA-500 kVA).
• 4 Shapes of transformers are available A, B, C and D.
• 2 holes for cable wiring had prepared with grommet.
• Wiring holes diameter are 9-49mm.
• Eye bolt for movement is available.
• Large exhaust area.

From: ฿ 2,619.11
Days to Ship: 5 Day(s)

5 Day(s)

Compare

Transformer AVR-E Series, AC Constant Voltage Power Supply Unit

Until 31/03/2025

Transformer AVR-E Series, AC Constant Voltage Power Supply Unit

SWALLOW ELECTRIC

AC constant voltage power supply unit for overseas.
[Features]
· Japanese electric products can be used by automatically converting from 170 to 260 V.
· With no fuse breaker protection function.
· With input code 1.5 m.
[Applications]
· Suitable when using electric products in countries with unstable voltage.

From: ฿ 20,913.91
Special Price
Days to Ship: Same day

Same day

Compare

S Series

AIHARA

• Steel case for middle size transformer S series.
• Steel case for indoor used transformer.
• Material: Cold rolled steel SPC.
• Standard semi-gloss white color for indoor used (Munsell 5Y7/1).
• 6 sizes of cases are available which is applicable for several size of transformer’s capacities including single phase transformer (30VA-5kVA) and Three phase transformer (300VA-2kVA).
• 2 holes for cable wiring had prepared with grommet.
• Part No. S6 Wiring holes diameter are 15-28mm.
• Eye bolt for movement is available.
• Large exhaust area.
• Ground terminal is available.

From: ฿ 2,844.69
Days to Ship: 5 Day(s)

5 Day(s)

Compare

WORLD Series, Transformer For Use Overseas

SWALLOW ELECTRIC

Electronic type input voltage automatic conversion device.
[Features]
· Can be used anywhere in the world since it supports 110 to 240 V input voltage.
· Converter with 3 sets of conversion plugs (A-2 / BF / 0-plug).
· With input code 80 cm.
· Protection function, automatic return type temperature thermostat.
· With the voltage stable function.
[Applications]
· For charging of compatible electric products, shavers, notebook personal computers, CD / MD players, video cameras, digital cameras, etc.

From: ฿ 6,352.23
Days to Ship: 5 Day(s)

5 Day(s)


Brand
Product Series
From
Days to Ship
Primary voltage(V)
Capacity(kVA)
Secondary voltage(V)
Number of phases/winding
Insulation type
Input/output terminal shape
Dimension vertical(mm)
Shield presence
With/without Case
Representative Standard
Dimension width(mm)
Dimension depth(mm)

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare Until 31/03/2025	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
Brand	SWALLOW ELECTRIC	SWALLOW ELECTRIC	AIHARA	SWALLOW ELECTRIC
Product Series	Single-Phase/Three-Phase Transformer Case, BK Series	Transformer AVR-E Series, AC Constant Voltage Power Supply Unit	S Series	WORLD Series, Transformer For Use Overseas
From	฿ 2,619.11	฿ 20,913.91 Special Price On Sale Until 31/03/2025	฿ 2,844.69	฿ 6,352.23
Days to Ship	5 Day(s)	Same day	5 Day(s)	5 Day(s)
Primary voltage(V)	-	AC170 to 260	-	AC110 to 240
Capacity(kVA)	0.5 or Less ～ 50	1.5 ～ 2	0.05 ～ 0.2	0.12 ～ 0.3
Secondary voltage(V)	-	AC100	-	AC100
Number of phases/winding	Other	Other	Other	Other
Insulation type	-	-	-	-
Input/output terminal shape	-	-	-	-
Dimension vertical(mm)	135 ～ 550	235 ～ 300	113 ～ 158	50 ～ 120
Shield presence	-	NA	-	NA
With/without Case	Available	Available	NA	Available
Representative Standard	-	-	-	-
Dimension width(mm)	180 ～ 410	145 ～ 210	120 ～ 160	82 ～ 155
Dimension depth(mm)	150 ～ 500	150 ～ 250	170 ～ 240	46 ～ 128

Related Categories to Transformers

- Transformers

FAQ Transformers

Question: What is different between 1phase transformers and 3phase transformers.: Answer: 1. In a single-phase transformer, the electricity is supplied through two wires called Line and neutral. In three phase transformers, the electricity is supplied through three wires (four wires if neutral wire is included).
2. The voltage of single-phase transformer supply is 230V whereas three-phase transformer supply is 415V.
3. The efficiency of a three-phase transformer is significantly higher than a single-phase supply and the power transfer capability is also more.
Question: How many types of transformers?: Answer: Type of transformer can be separated by different types of applications.
1. Transformer types based on core structure.
   1.1) Iron core transformer
   1.2) Shell core transformer
   1.3) H-type core transformer
2. Transformer types based on electric system.
   2.1) Single-phase transformer
   2.2) Three-phase transformer
3. Transformer types based on voltage level.
   3.1) Step-up transformer which is use for boost voltage up then transmit to secondary side.
   3.2) Step-down transformer which is use for reducing voltage down then transmit to secondary side.
   3.3) Isolation transformer which voltage at primary and secondary side are same. Typically, applicable for Laboratory which is need stable voltage and current.
Question: How is transformer maintenance method?: Answer: 1. Should install and using in low-humidity to prevent short circuit issue.
2. Installation place should be good for heat transfer.
3. Always keep cleaning heat transfer component.
4. Always keep inspection terminal and wire.
Question: Why transformer is necessary?: Answer: Transformers is necessary because each electric device need different level of voltage. So, we must use transformer to adjust the electrical voltage from power source to sub-unit. Such as, reduce voltage from high-power electric post to the building and transformer for reduce voltage level from electric source of building to each electrical home appliance as well.