Toroidal Transformers

Toroidal transformers are magnetic core transformers manufactured within a toroidal (ring or doughnut) shape.

How do Toroidal Transformers they work?


Transformers use the principles of induction to transfer energy in the form of electricity via their internal coli. They make it possible for devices with different requirements to run off the same source of voltage. They are able to step the voltage up or down as needed. They can also increase and decrease current and alter electrical energy in other ways.
Toroidal transformers can be open or encapsulated, and some models are completed with PCB mounting pins.

Benefits of Toroidal Transformers


  • Transformers take up less space than their traditional square counterparts using less real estate. Some manufacturers suggest that fitting a toroidal transformer with flying leads instead of terminal blocks can save you up to 60% space.

  • These transformers are easy to mount, some even just require a single bolt to fix them in place.

  • They have flexible dimensions.

  • Toroidal transformers offer great noise reduction and emit less EMI (electromagnetic interference) than standard transformers.

  • They have a low stray field.

  • They are quieter to run than standard transformers and create less hum noise.

  • They present excellent value for money. Toroidal cores take less energy to maintain a magnetic field, and therefore use less power.

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Description Price Primary Voltage Rating Secondary Voltage Rating Power Rating Number of Outputs Secondary Current Height Weight Diameter Dimensions Minimum Operating Frequency Maximum Operating Frequency Mounting Type Termination Type Fixing Hole Diameter
RS Stock No. 173-0169
BrandRS PRO
£13.173
Each (In a Box of 24)
Units
230V ac 2 x 12V ac 50VA 2 2.083A 33mm 740g 80mm 80 (Dia.) x 33mm 50Hz 60Hz - Copper Conductor Termination Wire -
RS Stock No. 671-8956
BrandRS PRO
£14.64
Each
Units
230V ac 2 x 12V ac 50VA 2 2.083A 33mm 740g 80mm 80 (Dia.) x 33mm 50Hz 60Hz - Copper Conductor Termination Wire -
RS Stock No. 223-9323
Mfr. Part No.70051K
£13.49
Each
Units
115V ac, 230V ac 2 x 9V ac 15VA 2 833mA - 304g - 60 x 60 x 26.3mm 50Hz 60Hz PCB Pin M4
RS Stock No. 671-9050
BrandRS PRO
£9.66
Each
Units
115 V ac, 230 V ac 2 x 12V ac 15VA 2 625mA 31mm 365g 60mm 60 (Dia.) x 31mm 50Hz 60Hz - Copper Conductor Termination Wire -
RS Stock No. 173-0072
BrandRS PRO
£8.694
Each (In a Box of 40)
Units
115 V ac, 230 V ac 2 x 12V ac 15VA 2 625mA 31mm 365g 60mm 60 (Dia.) x 31mm 50Hz 60Hz - Copper Conductor Termination Wire -
RS Stock No. 223-9351
Mfr. Part No.70054K
£14.69
Each
Units
115V ac, 230V ac 2 x 18V ac 15VA 2 417mA - 304g - 60 x 60 x 26.3mm 50Hz 60Hz PCB Pin M4
RS Stock No. 420-9201
Mfr. Part No.92435-P2S2
£69.08
Each
Units
115V ac, 230V ac 2 x 40V ac 500VA 2 6.25A 60mm 3.5kg 136mm 136 (Dia.) x 60mm 50Hz 60Hz - Leads -
RS Stock No. 361-6210
Mfr. Part No.58-0100-012-D
£37.99
Each
Units
230V ac 12V ac 100VA 1 8.333A 52mm 1kg 93mm 93 (Dia.) x 52mm - - DIN Rail - -
RS Stock No. 671-9139
BrandRS PRO
£21.43
Each
Units
115V ac, 230V ac 2 x 18V ac 120VA 2 3.333A 48mm 1.4kg 96mm 96 (Dia.) x 48mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 173-0135
BrandRS PRO
£19.288
Each (In a Box of 12)
Units
115 V ac, 230 V ac 2 x 18V ac 120VA 2 3.333A 48mm 1.4kg 96mm 96 (Dia.) x 48mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 257-4963
Mfr. Part No.91942-P2S2
£16.54
Each
Units
115 V ac, 230 V ac 2 x 12V ac 30VA 2 1.25A 32mm 450g 70mm 70 (Dia.) x 32mm 50Hz 60Hz - Leads -
RS Stock No. 361-6248
Mfr. Part No.58-0300-012-D
£76.58
Each
Units
230V ac 12V ac 300VA 1 25A 69mm 2.5kg 117mm 117 (Dia.) x 69mm - - DIN Rail - -
RS Stock No. 361-6260
Mfr. Part No.58-0100-024-D
£38.45
Each
Units
230V ac 24V ac 100VA 1 4.167A 52mm 1kg 93mm 93 (Dia.) x 52mm - - DIN Rail - -
RS Stock No. 257-5231
Mfr. Part No.91966-P2S2
£53.36
Each
Units
115V ac, 230V ac 2 x 35V ac 300VA 2 4.286A 58mm 2.3kg 115mm 115 (Dia.) x 58mm 50Hz 60Hz - Leads -
RS Stock No. 671-9148
BrandRS PRO
£20.37
Each
Units
115V ac, 230V ac 2 x 25V ac 120VA 2 2.4A 48mm 1.4kg 96mm 96 (Dia.) x 48mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 173-0136
BrandRS PRO
£18.333
Each (In a Box of 12)
Units
115 V ac, 230 V ac 2 x 25V ac 120VA 2 2.4A 48mm 1.4kg 96mm 96 (Dia.) x 48mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 671-9047
BrandRS PRO
£19.25
Each
Units
230V ac 2 x 25V ac 225VA 2 4.5A 50mm 2.3kg 120mm 120 (Dia.) x 50mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 173-0075
BrandRS PRO
£18.782
Each (In a Box of 6)
Units
230V ac 2 x 25V ac 225VA 2 4.5A 50mm 2.3kg 120mm 120 (Dia.) x 50mm 50Hz 60Hz - Copper Conductor -
RS Stock No. 223-9418
Mfr. Part No.70063K
£17.82
Each
Units
115V ac, 230V ac 2 x 15V ac 25VA 2 832mA - 435g - 60 x 60 x 37.5mm 50Hz 60Hz PCB Pin M4
RS Stock No. 257-5203
Mfr. Part No.91964-P2S2
£53.89
Each
Units
115V ac, 230V ac 2 x 25V ac 300VA 2 6A 58mm 2.3kg 115mm 115 (Dia.) x 58mm 50Hz 60Hz - Leads -
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