Safety Site Transformers

Safety site transformers are often used with industrial and power tools. They provide the user with protection by isolating the tools from the main power supply to prevent overloading and minimise shock risk.

How do safety site transformers work?

The transformer consists of two coils of wire around an iron core. The incoming, or primary, coil converts the electric field into a magnetic one, inducing an electric field in second coil without actually touching it. The voltage can be stepped up or down by varying the number of turns in the coil. Safety site transformers can be used to step down UK mains voltage to, for example, 110V CTE (centre tap earthed) to limit the power of a potential electric shock.

Types of safety site transformers

Safety site transformers can have different input and output voltage ratings. As they're often used outside, they're designed with the appropriate socket fittings. They tend to be heavy duty, with strong lifting handles, to withstand harsh industrial or site conditions. They can also be free standing and portable, wall mounted or even hung, depending on your needs.


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Description Price Primary Voltage Rating Secondary Voltage Rating Power Rating Number of Phases Output Current Series Plug Type Socket Type Weight Length Width Depth Dimensions Mounting Type
RS Stock No. 436-8827
Mfr. Part No.CMH 1200/230
£172.39
Each
Units
230V ac 230V ac 1.2kVA 1 5.2A CMH1200/230 Type G - British 3-Pin Type G - British 3-Pin 7kg - 74mm 200mm W74 x D200 x H160mm Shoulder Carry
RS Stock No. 310-2171
Mfr. Part No.CMH 1200/110
£170.77
Each
Units
230V ac ±55V ac 600VA - 16A CMH1200 Type G - British 3-Pin BS EN 60309 7kg 235mm 160mm 74mm 235 x 160 x 74mm Shoulder Carry
RS Stock No. 436-8855
Mfr. Part No.CM10K36
£697.80
Each
Units
400V ac ±55 V ac, 110 V 10kVA 3 90A CM10K36 Hard Wire L1-L2-L3-E BS EN 60309 86kg 470mm 586mm 452mm 420 x 325 x 270mm Free Standing
RS Stock No. 347-6696
Mfr. Part No.EOU 4F
£69.90
Each
Units
110V ac 110V ac - - 16A EOU 4F BS EN 60309 BS EN 60309 2.5kg 225mm 225mm 210mm 225 x 210 x 230mm Free Standing
RS Stock No. 260-4345
Mfr. Part No.CM1500WM0
£158.55
Each
Units
230V ac ±110V ac 750VA - 8.18A CM1500WM0 Hard Wire L-N-E - 10.5kg 200mm 176mm 226mm 200 x 176 x 226mm Wall Mount
RS Stock No. 399-6140
Mfr. Part No.CMHT 3
£303.84
Each
Units
230V ac ±55V ac 3kVA - 27A CMHT Hard Wire L-N-E BS EN 60309 32kg 370mm 230mm 300mm 285 x 225 x 380mm Free Standing
RS Stock No. 436-8984
Mfr. Part No.CM5000/FM0/400
£499.99
Each
Units
400V ac ±55V ac 5kVA 1 - CM5000/FM0/400 Hard Wire L1-L2-E - 50kg 420mm 350mm 260mm 600 x 525 x 400mm Wall Mount
RS Stock No. 436-9000
Mfr. Part No.CM10000/FM0/400
£725.50
Each
Units
400V ac ±55V ac 10kVA 1 - SIM Hard Wire L1-L2-E - 85kg 550mm 530mm 330mm 550 x 530 x 330mm Wall Mount
RS Stock No. 260-4834
Mfr. Part No.CM3300WM2
£237.22
Each
Units
230V ac ±110V ac 1.65kVA - 15A CM3300WM2 Hard Wire L-N-E BS EN 60309 18kg 240mm 255mm 240mm 240 x 250 x 255mm Wall Mount
RS Stock No. 436-8962
Mfr. Part No.CM5000/FM0/230
£499.99
Each
Units
230V ac ±55V ac 5kVA 1 - CM5000/FM0/230 Hard Wire L-N-E - 50kg 420mm 350mm 260mm 420 x 325 x 270mm Wall Mount
RS Stock No. 812-9590
Mfr. Part No.EOU2X32/GRP
£69.34
Each
Units
110V ac 110V ac - - 32A EOU BS EN 60309 BS EN 60309 - - - - - Free Standing
RS Stock No. 812-9578
Mfr. Part No.CM3300/11
£105.90
Each
Units
230V ac ±55V ac 1.65kVA 1 - CM Type G - British 3-Pin BS EN 60309 18kg 195mm 205mm 265mm 195 x 205 x 265mm Floor Standing
RS Stock No. 260-4351
Mfr. Part No.CM1500WM2
£163.73
Each
Units
230V ac ±110V ac 750VA - 8.18A CM1500WM2 Hard Wire L-N-E BS EN 60309 10.5kg 200mm 230mm 230mm 200 x 230 x 230mm Wall Mount
RS Stock No. 310-2193
Mfr. Part No.ILT 200/24/2
£186.98
Each
Units
230V ac 24V ac 200VA 1 8.3A ILT Hard Wire L-N-E BS EN 60309 5.2kg 180mm 180mm 180mm 180 x 180 x 200mm Wall Mount
RS Stock No. 812-9588
Mfr. Part No.CM3000/230/EURO
£156.46
Each
Units
230V ac 230V 1.5kVA 1 - CM SCHUKO Schuko 18kg 195mm 205mm 265mm 195 x 205 x 265mm Floor Standing
RS Stock No. 812-9594
Mfr. Part No.EOU1/ELCB
£72.88
Each
Units
230V ac 230V ac - - 13A EOU Type G - British 3-Pin BS EN 60309 - - - - - Free Standing
RS Stock No. 347-6674
Mfr. Part No.CM2250WM2/110/24
£278.87
Each
Units
230V ac 24 V ac, ±55 V ac 1.2 kVA, 200 VA 1 10.2 A rms, 24 V ac CM2250WM2 Hard Wire L-N-E BS EN 60309 16kg 240mm 250mm 255mm 240 x 250 x 255mm Wall Mount
RS Stock No. 436-8849
Mfr. Part No.CM5000/WM4
£538.82
Each
Units
230V ac ± 55V ac 5000VA - 31.81A CM5000/WM4 Hard Wire L-N-E BS EN 60309 35kg 350mm 460mm 380mm 470 x 586 x 452mm Wall Mount
RS Stock No. 436-9808
Mfr. Part No.TIM500
BrandBlock
£103.88
Each
Units
230V ac 115V ac 500VA - 2.17A TIM - - 9.1kg - 150mm 176mm - Chassis Mount
RS Stock No. 436-9836
Mfr. Part No.TIM1000
BrandBlock
£169.54
Each
Units
230V ac 115V ac 1kVA - 4.35A TIM - - 17.1kg - 165mm 200mm - Chassis Mount
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