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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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In Stock RS PRO 230 V ac 2 x 55 V ac Toroidal Transformer 2 Output 50 VA, UL 506, IEC 61558 Class II, VDE0570 Class II, RoHS, EN RS Stock No. 671-9101 Subtotal (1 unit) £24.88(exc. VAT) £24.88/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	0.455A	33mm	50VA	740g	80mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	UL 506, IEC 61558 Class II, VDE0570 Class II, RoHS, EN 61558 Class II
In Stock Nuvotem Talema 230 V ac 2 x 55 V ac Toroidal Transformer 2 Output 120 VA, UL5, VDE0550, EN61558, BS415, EN60065, UL506 RS Stock No. 223-8055 Mfr. Part No. 0120P1-2-055 Subtotal (1 unit) £70.62(exc. VAT) £70.62/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	5A	46mm	120VA	1.2kg	93mm	-	50Hz	60Hz	0°C	-	Secondary Winding, Primary Winding	180°C	-	-	-	Copper Conductor Termination Wire	-	-	UL5, VDE0550, EN61558, BS415, EN60065, UL506
In Stock Nuvotem Talema 230 V ac 2 x 18 V ac Toroidal Transformer 2 Output 5 VA, UL, IEC RS Stock No. 223-9159 Mfr. Part No. 70024K Subtotal (1 unit) £49.90(exc. VAT) £49.90/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 18 V ac	-	-	2	139mA	-	5VA	144g	-	-	50Hz	60Hz	-	Potted	Dual Primary	60°C	PCB	-	70000	Pin	-	-	UL, IEC
In Stock RS PRO 230 V ac 2 x 25 V ac Toroidal Transformer 2 Output 120 VA RS Stock No. 671-9006 Subtotal (1 unit) £36.66(exc. VAT) £36.66/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 25 V ac	-	-	2	2.4A	48mm	120VA	1.4kg	96mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	No
In Stock Nuvotem Talema 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 15 VA, UL5, EN60065, UL506, EN61558, BS415, VDE0550 RS Stock No. 223-7771 Mfr. Part No. 0015P1-2-012 Subtotal (1 unit) £42.17(exc. VAT) £42.17/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	1.25A	31mm	15VA	0.3kg	60mm	-	50Hz	60Hz	0°C	-	Primary Winding, Secondary Winding	180°C	-	-	-	Copper Conductor Termination Wire	-	-	UL5, EN60065, UL506, EN61558, BS415, VDE0550
In Stock Nuvotem Talema 230 V ac 2 x 55 V ac Toroidal Transformer 2 Output 300 VA, EN61558 (DEKRA Certificate 161054.0), EN60065, RS Stock No. 223-8241 Mfr. Part No. 0300P1-2-055 Subtotal (1 unit) £109.77(exc. VAT) £109.77/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 55 V ac	-	-	2	6A	58mm	300VA	2.3kg	115mm	-	50Hz	60Hz	0°C	-	Dual Secondary	180°C	-	-	-	Copper Conductor Termination Wire	-	-	EN61558 (DEKRA Certificate 161054.0), EN60065, UL5 (File E15495), BS415, VDE0550, UL506
In Stock Nuvotem Talema 230 V ac 2 x 9 V ac Toroidal Transformer 2 Output 15 VA, UL, IEC RS Stock No. 223-9323 Mfr. Part No. 70051K Subtotal (1 unit) £17.18(exc. VAT) £17.18/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 9 V ac	-	-	2	833mA	-	15VA	304g	-	-	50Hz	60Hz	-	Potted	Dual Primary	60°C	PCB	-	70000	Pin	-	-	UL, IEC
In Stock RS PRO 230 V ac 2 x 18 V ac Toroidal Transformer 2 Output 225 VA, VDE0570 Class II, UL506, IEC61558 Class II, EN61558 RS Stock No. 671-9038 Subtotal (1 unit) £43.78(exc. VAT) £43.78/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 18 V ac	-	-	2	1.0408A	50mm	225VA	2.29kg	120mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Solid Copper Conductor Terminal with PVC Insulation	-	-	VDE0570 Class II, UL506, IEC61558 Class II, EN61558 Class II
In Stock Nuvotem Talema 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 25 VA, UL, IEC RS Stock No. 223-9402 Mfr. Part No. 70062K Subtotal (1 unit) £23.73(exc. VAT) £23.73/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	1.041A	-	25VA	435g	-	-	50Hz	60Hz	-	Potted	Dual Primary	60°C	PCB	-	70000	Pin	-	-	UL, IEC
In Stock Block 2 x 115 V ac 2 x 115 V ac Toroidal Transformer 2 Output 3000 VA, cURus, EN 61558-2-6, IEC 61558-2-6, DIN EN RS Stock No. 752-9230 Mfr. Part No. RKD 100/2x18 Subtotal (1 unit) £49.52(exc. VAT) £49.52/unit Quantity	Block	2 x 115 V ac	-	Toroidal Transformer	2 x 115 V ac	-	-	2	-	-	3000VA	1.2kg	92mm	-	50Hz	60Hz	-	-	-	40°C	Hole, Screw	-	RKD	Connecting Lead	-	-	cURus, EN 61558-2-6, IEC 61558-2-6, DIN EN 61558-2-1, IEC 61558-2-1, EN 61558-2-1, DIN EN 61558-2-4, UL 5085-1/-2, VDE 0570 Teil 2-1, DIN EN 61558-2-6, VDE 0570 Part 2-6, EN 61558-2-4, CSA 22.2 No.66, VDE 0
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) £57.25(exc. VAT) £57.25/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
In Stock Nuvotem Talema 230 V ac 2 x 9 V ac Toroidal Transformer 2 Output 5 VA, EN60742, BS415, EN60950, UL506, VDE0551, VDE0550, RS Stock No. 278-6908 Mfr. Part No. 60021 Subtotal (1 unit) £67.15(exc. VAT) £67.15/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 9 V ac	-	-	2	278mA	19mm	5VA	0.14kg	49mm	-	50Hz	60Hz	-	-	Secondary Winding, Primary Winding	180°C	-	-	-	-	-	-	EN60742, BS415, EN60950, UL506, VDE0551, VDE0550, EN60065 (IEC65)
In Stock RS PRO 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 30 VA, EN 61558 Class II, VDE0570 Class II, UL 506, RoHS, IEC RS Stock No. 671-8937 Subtotal (1 unit) £21.66(exc. VAT) £21.66/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	2.5A	32mm	30VA	503g	70mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	EN 61558 Class II, VDE0570 Class II, UL 506, RoHS, IEC 61558 Class II
Last RS stock RS PRO 2 x 115 V ac 2 x 18 V Toroidal Transformer, REACH, RoHS RS Stock No. 124-3865 Subtotal (1 unit) £15.00(exc. VAT) £15.00/unit Quantity		2 x 115 V ac	-	Toroidal Transformer	2 x 18 V	-	-	-	278mA	26mm	-	252g	-	-	-	50Hz	-	-	Dual Primary, Multiple Secondary	60°C	Through Hole	-	-	-	-	-	REACH, RoHS
In Stock RS PRO 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 50 VA RS Stock No. 671-8959 Subtotal (1 unit) £39.91(exc. VAT) £39.91/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	4.167A	33mm	50VA	740g	80mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor Termination Wire	-	-	No
In Stock RS PRO 230 V ac 2 x 6 V ac Toroidal Transformer 2 Output 50 VA RS Stock No. 671-9088 Subtotal (1 unit) £25.19(exc. VAT) £25.19/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 6 V ac	-	-	2	4.167A	33mm	50VA	740g	80mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor Termination Wire	-	-	No
In Stock RS PRO 230 V ac 2 x 25 V ac Toroidal Transformer 2 Output 500 VA, UL506, EN60065 Class II, EN615581 Class II, UL51 RS Stock No. 123-4031 Subtotal (1 unit) £121.24(exc. VAT) £121.24/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 25 V ac	-	-	2	10A	65mm	500VA	0.3kg	148mm	-	50Hz	60Hz	-	-	Single Primary, Dual Secondary	180°C	Surface	-	-	Wire	-	-	UL506, EN60065 Class II, EN615581 Class II, UL51
In Stock RS PRO 230 V ac 2 x 18 V ac Toroidal Transformer 2 Output 30 VA, UL 506, IEC 61558 Class II, VDE0570 Class II, RoHS, EN RS Stock No. 671-8946 Subtotal (1 unit) £28.69(exc. VAT) £28.69/unit Quantity		230 V ac	-	Toroidal Transformer	2 x 18 V ac	-	-	2	0.833A	32mm	30VA	503g	70mm	-	50Hz	60Hz	-	-	-	-	-	-	-	Copper Conductor	-	-	UL 506, IEC 61558 Class II, VDE0570 Class II, RoHS, EN 61558 Class II
In Stock Nuvotem Talema 230 V ac 2 x 12 V ac Toroidal Transformer 2 Output 5 VA, IEC, UL RS Stock No. 223-9137 Mfr. Part No. 70022K Subtotal (1 unit) £17.80(exc. VAT) £17.80/unit Quantity	Nuvotem Talema	230 V ac	-	Toroidal Transformer	2 x 12 V ac	-	-	2	208mA	-	5VA	144g	-	-	50Hz	60Hz	-	Potted	Dual Primary	60°C	PCB	-	70000	Pin	-	-	IEC, UL
In 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. 671-9185 Subtotal (1 unit) £55.66(exc. VAT) £55.66/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