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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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Currently unavailable RS PRO 2 x 115 V ac 2 x 12 V Toroidal Transformer, REACH, RoHS RS Stock No. 124-3869 Subtotal (1 unit) Kr. 261,63(exc. VAT) Kr. 261,63/unit Quantity	2 x 115 V ac	-	Toroidal Transformer	2 x 12 V	-	-	-	625mA	26.3mm	-	304g	-	-	-	50Hz	-	-	Dual Primary	60°C	Through Hole	-	-	-	-	-	REACH, RoHS
Temporarily out of stock RS PRO 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 225 VA, IEC 61558 Class II, EN 61558 Class II, UL 506, VDE0570 RS Stock No. 173-0154 Subtotal (1 box of 6 units) Kr. 3 661,392(exc. VAT) Kr. 610,232/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	9.375A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	IEC 61558 Class II, EN 61558 Class II, UL 506, VDE0570 Class II, RoHS
Temporarily out of stock RS PRO 230 V ac 2 x 55 V ac Toroidal Transformer 2 Output 225 VA, UL 506, RoHS, IEC 61558 Class II, EN 61558 Class II, RS Stock No. 173-0248 Subtotal (1 box of 6 units) Kr. 3 787,71(exc. VAT) Kr. 631,285/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	2.045A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	UL 506, RoHS, IEC 61558 Class II, EN 61558 Class II, VDE0570 Class II
In Stock RS PRO 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 160 VA, IEC 61558 Class II, RoHS, UL 506, EN 61558 Class II, RS Stock No. 173-0137 Subtotal (1 box of 8 units) Kr. 4 124,36(exc. VAT) Kr. 515,545/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	6.667A	46mm	160VA	1.74kg	109mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	IEC 61558 Class II, RoHS, UL 506, EN 61558 Class II, VDE0570 Class II
In Stock RS PRO 2 x 115 V ac 2 x 55 V ac Toroidal Transformer 2 Output 50 VA, UL506, IEC BS EN 61558-2-6, IEC BS EN 61558-1, RS Stock No. 540-4952 Subtotal (1 unit) Kr. 785,94(exc. VAT) Kr. 785,94/unit Quantity	2 x 115 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	600mA	34mm	50VA	760g	71mm	-	50Hz	60Hz	-	-	Dual Secondary, Dual Primary	105°C	-	-	-	-	-	-	UL506, IEC BS EN 61558-2-6, IEC BS EN 61558-1, RoHS, AS NZS 61558.2.4, BS EN 61558-1, AS NZS 61558.2.6, AS NZS 61558.1, IEC BS EN 61558-2-4, CE
Temporarily out of stock RS PRO 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 80 VA RS Stock No. 173-0129 Subtotal (1 box of 16 units) Kr. 5 928,128(exc. VAT) Kr. 370,508/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	3.333A	38mm	80VA	1kg	93mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	No
Temporarily out of stock RS PRO 230 V ac 11.8 V ac Toroidal Transformer 1 Output 50 VA, UL506, VDE0570 Class II, EN61558 Class II, IEC61558 Class RS Stock No. 173-0174 Subtotal (1 box of 24 units) Kr. 6 941,256(exc. VAT) Kr. 289,219/unit Quantity	230 V ac	-	Toroidal Transformer	11.8 V ac	-	-	1	4.237A	33mm	50VA	0.72kg	80mm	-	50Hz	60Hz	-	-	Insulated Winding	180°C	-	-	-	Lead	-	-	UL506, VDE0570 Class II, EN61558 Class II, IEC61558 Class II
In Stock RS PRO 230 V ac 2 x 18 V ac Toroidal Transformer 2 Output 225 VA RS Stock No. 173-0251 Subtotal (1 box of 6 units) Kr. 4 079,70(exc. VAT) Kr. 679,95/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 18 V ac	-	-	2	6.25A	50mm	225VA	2.3kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	No
In Stock RS PRO 115 V ac, 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 30 VA, EN61558 Class II, IEC61558 Class II, UL506, RS Stock No. 173-0083 Subtotal (1 box of 30 units) Kr. 7 807,44(exc. VAT) Kr. 260,248/unit Quantity	115 V ac, 230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	1A	32mm	30VA	0.503kg	70mm	-	50Hz	60Hz	-	-	Primary Winding, Secondary Winding	-	-	-	-	Lead	-	-	EN61558 Class II, IEC61558 Class II, UL506, VDE0570 Class II
In Stock RS PRO 230 V ac 2 x 30 V ac Toroidal Transformer 2 Output 225 VA, VDE0570 Class II, EN61558 Class II, IEC61558 Class II, RS Stock No. 671-9040 Subtotal (1 unit) Kr. 622,70(exc. VAT) Kr. 622,70/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 30 V ac	-	-	2	1.0408A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Lead	-	-	VDE0570 Class II, EN61558 Class II, IEC61558 Class II, UL506
In Stock RS PRO 230 V ac 2 x 30 V ac Toroidal Transformer 2 Output 160 VA, EN 61558 Class II, UL 506, VDE0570 Class II, IEC 61558 RS Stock No. 173-0233 Subtotal (1 box of 8 units) Kr. 4 033,512(exc. VAT) Kr. 504,189/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 30 V ac	-	-	2	2.667A	46mm	160VA	1.74kg	109mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	EN 61558 Class II, UL 506, VDE0570 Class II, IEC 61558 Class II, RoHS
Temporarily out of stock RS PRO 230 V ac 2 x 15 V ac Toroidal Transformer 2 Output 225 VA, VDE0570 Class II, UL506, EN61558 Class II, IEC61558 RS Stock No. 671-9034 Subtotal (1 unit) Kr. 582,68(exc. VAT) Kr. 582,68/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 15 V ac	-	-	2	1.0408A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	Primary Winding, Secondary Winding	180°C	-	-	-	Copper Conductor	-	-	VDE0570 Class II, UL506, EN61558 Class II, IEC61558 Class II
Temporarily out of stock RS PRO 230 V ac 11.8 V ac Toroidal Transformer 1 Output 150 VA RS Stock No. 671-9191 Subtotal (1 unit) Kr. 467,56(exc. VAT) Kr. 467,56/unit Quantity	230 V ac	-	Toroidal Transformer	11.8 V ac	-	-	1	12.712A	43mm	150VA	1.7kg	106mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Termination Wire	-	-	No
In Stock RS PRO 2 x 115 V ac 2 x 24 V ac Toroidal Transformer 2 Output 250 VA, IEC 61558-2-6 RS Stock No. 117-6061 Subtotal (1 unit) Kr. 1 297,68(exc. VAT) Kr. 1 297,68/unit Quantity	2 x 115 V ac	-	Toroidal Transformer	2 x 24 V ac	-	-	2	-	52mm	250VA	2.4kg	115mm	-	50Hz	60Hz	-	Open	Dual Primary	105°C	Surface	-	-	Termination Wire	-	-	IEC 61558-2-6
In Stock RS PRO 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 160 VA, RoHS, IEC 61558 Class II, VDE0570 Class II, EN 61558 RS Stock No. 671-9019 Subtotal (1 unit) Kr. 647,39(exc. VAT) Kr. 647,39/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	6.667A	46mm	160VA	1.74kg	109mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	RoHS, IEC 61558 Class II, VDE0570 Class II, EN 61558 Class II, UL 506
Temporarily out of stock RS PRO 2 x 115 V ac 2 x 55 V ac Toroidal Transformer 2 Output, EN615581 Class II, UL51, UL506, EN60065 Class II RS Stock No. 123-4053 Subtotal (1 unit) Kr. 2 608,09(exc. VAT) Kr. 2 608,09/unit Quantity	2 x 115 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	-	70mm	-	6.5kg	162mm	-	50Hz	60Hz	105°C	-	Dual Primary, Dual Secondary	180°C	Surface	-	-	Wire	-	-	EN615581 Class II, UL51, UL506, EN60065 Class II
In Stock RS PRO 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 50 VA, RoHS, UL RS Stock No. 123-4016 Subtotal (1 unit) Kr. 369,22(exc. VAT) Kr. 369,22/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	-	42mm	50VA	650g	87mm	-	50Hz	60Hz	-	Open	Dual Secondary	-	Surface	-	-	Wire	-	-	RoHS, UL
In Stock RS PRO 2 x 115 V ac 2 x 12 V ac Toroidal Transformer 2 Output 100 VA, IEC 61558-2-6 RS Stock No. 117-6051 Subtotal (1 unit) Kr. 823,53(exc. VAT) Kr. 823,53/unit Quantity	2 x 115 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	-	42mm	100VA	1.1kg	90mm	-	50Hz	60Hz	-	Open	Dual Primary	105°C	Surface	-	-	Termination Wire	-	-	IEC 61558-2-6
Temporarily out of stock RS PRO 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 225 VA, IEC 61558 Class II, EN 61558 Class II, UL 506, VDE0570 RS Stock No. 671-9167 Subtotal (1 unit) Kr. 747,05(exc. VAT) Kr. 747,05/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	9.375A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	IEC 61558 Class II, EN 61558 Class II, UL 506, VDE0570 Class II, RoHS
Temporarily out of stock RS PRO 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 500 VA, UL506 & UL51, EN615581 Class II, EN60065 Class II RS Stock No. 123-4011 Subtotal (1 unit) Kr. 513,28(exc. VAT) Kr. 513,28/unit Quantity	230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	10A	39mm	500VA	0.3kg	82mm	-	50Hz	60Hz	105°C	-	-	180°C	Surface	-	-	Wire	-	-	UL506 & UL51, EN615581 Class II, EN60065 Class II