Power Transformers - Board Mount

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14A One-4-All™ International Transformers

Signal Transformer / Bel 14A (One-4-All) PC and Chassis Mount Transformers are specifically designed to satisfy North American (UL, CSA, CE) and international (VDE, IEC, CSA, CE) transformer regulatory requirements for power isolation in Medical and Dental applications. Signal Transformer / Bel 14A ensures double isolation and low leakage current, surpassing the construction requirements for patient-connected equipment per UL 544 Standard for Medical and Dental Equipment, as well as, the IEC 601-1 Standard for Medical Electrical Equipment. The transformers are dielectric strength tested to 4000V_RMS, provide a UL class F insulation system, and meet the creepage and clearance requirements for both the UL and IEC standards. The 14A series is available in nine PC mount models with 2.5VA-56VA power.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	Primary Voltage Rating	Secondary Voltage Rating	Power Rating	Secondary Current Rating	Mounting Style	Primary Winding	Secondary Winding	Length	Width	Height	Series
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-10R-24 Bel Signal Transformer 1: 10,84 € 248In Stock	Mfr. Part No. 14A-10R-24 Mouser Part No 530-14A-10R-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	248In Stock	10,84 € 9,92 € 9,57 € 9,12 € 9,00 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	24 V CT/12 V	10 VA	420 mA/840 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	47.6 mm	39.7 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-10R-28 Bel Signal Transformer 1: 11,41 € 534In Stock	Mfr. Part No. 14A-10R-28 Mouser Part No 530-14A-10R-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	534In Stock	11,41 € 10,46 € 9,83 € 9,47 € View 9,18 € 8,75 € 8,36 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	28 V CT/14 V	10 VA	360 mA/720 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	47.6 mm	39.7 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 30VA 14A-30-512 Bel Signal Transformer 1: 19,40 € 493In Stock	Mfr. Part No. 14A-30-512 Mouser Part No 530-14A-30-512	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 30VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	493In Stock	19,40 € 17,48 € 16,75 € 16,23 € View 15,72 € 14,79 € 14,78 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	5 V/12 V	30 VA	250 mA/1.25 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	39.7 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-10R-16 Bel Signal Transformer 1: 11,48 € 236In Stock	Mfr. Part No. 14A-10R-16 Mouser Part No 530-14A-10R-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	236In Stock	11,48 € 10,41 € 9,96 € 9,67 € View 9,41 € 9,06 € 8,83 € 8,82 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	16 V CT/8 V	10 VA	620 mA/1.25 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	47.6 mm	39.7 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED 14A-5.0R-36 Bel Signal Transformer 1: 10,45 € 302In Stock	Mfr. Part No. 14A-5.0R-36 Mouser Part No 530-14A-5.0R-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	302In Stock	10,45 € 9,58 € 9,00 € 8,68 € View 8,41 € 8,02 € 7,78 € 7,59 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	36 V CT/18 V	5 VA	140 mA/280 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA 14A-20-12 Bel Signal Transformer 1: 17,86 € 81In Stock	Mfr. Part No. 14A-20-12 Mouser Part No 530-14A-20-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	81In Stock	17,86 € 16,48 € 15,92 € 14,94 € View 14,54 € 14,20 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	12.6 V CT/6.3 V	20 VA	1.6 A/3.2 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 56VA 14A-56-28 Bel Signal Transformer 1: 23,56 € 143In Stock	Mfr. Part No. 14A-56-28 Mouser Part No 530-14A-56-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 56VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	143In Stock	23,56 € 21,01 € 20,34 € 19,71 € View 19,08 € 17,57 € 17,29 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	28 V CT/14 V	56 VA	2 A/4 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	76.2 mm	63.5 mm	46.5 mm	14A
Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC 14A-20-515 Bel Signal Transformer 1: 16,35 € 453In Stock	Mfr. Part No. 14A-20-515 Mouser Part No 530-14A-20-515	Bel Signal Transformer	Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	453In Stock	16,35 € 14,96 € 14,04 € 13,53 € View 13,12 € 12,23 € 12,13 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	5 V/15 V	20 VA	175 mA/750 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED 14A-5.0R-24 Bel Signal Transformer 1: 10,25 € 258In Stock	Mfr. Part No. 14A-5.0R-24 Mouser Part No 530-14A-5.0R-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	258In Stock	10,25 € 9,40 € 8,83 € 8,51 € View 8,25 € 7,94 € 7,63 € 7,44 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	24 V CT/12 V	5 VA	210 mA/420 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED 14A-2.5R-24 Bel Signal Transformer 1: 11,59 € 192In Stock	Mfr. Part No. 14A-2.5R-24 Mouser Part No 530-14A-2.5R-24	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	192In Stock	11,59 € 10,63 € 9,98 € 9,61 € View 9,42 € 8,63 € 8,51 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	24 V CT/12 V	2.5 VA	100 mA/200 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	28.6 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA 14A-20-16 Bel Signal Transformer 1: 14,77 € 101In Stock	Mfr. Part No. 14A-20-16 Mouser Part No 530-14A-20-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	101In Stock	14,77 € 12,71 € 12,19 € 11,81 € View 10,85 € 10,14 € 10,11 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	16 V CT/8 V	20 VA	1.25 A/2.5 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED 14A-5.0R-28 Bel Signal Transformer 1: 10,25 € 98In Stock 100On Order	Mfr. Part No. 14A-5.0R-28 Mouser Part No 530-14A-5.0R-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	98In Stock 100On Order	10,25 € 9,40 € 8,83 € 8,51 € View 7,99 € 7,87 € 7,63 € 7,44 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	28 V CT/14 V	5 VA	180 mA/360 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	34.9 mm	14A
Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC 14A-56-515 Bel Signal Transformer 1: 31,32 € 28In Stock	Mfr. Part No. 14A-56-515 Mouser Part No 530-14A-56-515	Bel Signal Transformer	Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	28In Stock	31,32 € 27,34 € 26,14 € 24,86 € View 24,21 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	5 V/15 V	56 VA	250 mA/3 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	76.2 mm	63.5 mm	46.5 mm	14A
Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC 14A-5.0R-10 Bel Signal Transformer 1: 10,90 € 90In Stock	Mfr. Part No. 14A-5.0R-10 Mouser Part No 530-14A-5.0R-10	Bel Signal Transformer	Power Transformers - Board Mount TRANS CUST ONE-4-ALL MICROPROC Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	90In Stock	10,90 € 9,62 € 9,23 € 8,38 € View 7,83 € 7,72 € 7,60 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	10 V CT/5 V	5 VA	500 mA/1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-10R-20 Bel Signal Transformer 1: 11,83 € 153In Stock	Mfr. Part No. 14A-10R-20 Mouser Part No 530-14A-10R-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	153In Stock	11,83 € 10,84 € 10,19 € 9,81 € View 9,51 € 9,29 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	20 V CT/10 V	10 VA	500 mA/1 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	47.6 mm	39.7 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED 14A-2.5R-36 Bel Signal Transformer 1: 14,22 € 256In Stock	Mfr. Part No. 14A-2.5R-36 Mouser Part No 530-14A-2.5R-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	256In Stock	14,22 € 13,12 € 12,69 € 12,28 € View 10,12 € 9,70 € 8,42 € 8,33 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	36 V CT/18 V	2.5 VA	70 mA/140 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	28.6 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA 14A-20-28 Bel Signal Transformer 1: 14,77 € 182In Stock 50On Order	Mfr. Part No. 14A-20-28 Mouser Part No 530-14A-20-28	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	182In Stock 50On Order	14,77 € 12,87 € 12,47 € 12,07 € View 11,70 € 11,21 € 10,85 € 10,40 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	28 V CT/14 V	20 VA	720 mA/1.44 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA 14A-20-36 Bel Signal Transformer 1: 15,06 € 144In Stock 100Expected 10/23/2026	Mfr. Part No. 14A-20-36 Mouser Part No 530-14A-20-36	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	144In Stock 100Expected 10/23/2026	15,06 € 13,57 € 13,00 € 12,59 € View 12,19 € 11,69 € 11,30 € 11,25 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	36 V CT/18 V	20 VA	560 mA/1.12 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED 14A-5.0R-16 Bel Signal Transformer 1: 12,42 € 329In Stock	Mfr. Part No. 14A-5.0R-16 Mouser Part No 530-14A-5.0R-16	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 05VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	329In Stock	12,42 € 11,39 € 11,26 € 10,90 € View 10,56 € 10,12 € 9,25 € 9,11 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	16 V CT/8 V	5 VA	310 mA/620 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-10R-12 Bel Signal Transformer 1: 11,73 € 52In Stock	Mfr. Part No. 14A-10R-12 Mouser Part No 530-14A-10R-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	52In Stock	11,73 € 10,64 € 10,23 € 10,22 € View 10,14 € 9,81 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	12.6 V CT/6.3 V	10 VA	800 mA/1.6 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	47.6 mm	39.7 mm	34.9 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED 14A-2.5R-10 Bel Signal Transformer 1: 10,23 € 134In Stock	Mfr. Part No. 14A-2.5R-10 Mouser Part No 530-14A-2.5R-10	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 10VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	134In Stock	10,23 € 9,22 € 8,84 € 8,56 € View 8,29 € 7,16 € 6,76 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	10 V CT/5 V	2.5 VA	250 mA/500 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	28.6 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED 14A-2.5R-12 Bel Signal Transformer 1: 11,58 € 35In Stock	Mfr. Part No. 14A-2.5R-12 Mouser Part No 530-14A-2.5R-12	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	35In Stock	11,58 € 9,21 € 8,74 € 8,46 € View 7,36 € 7,16 € 7,01 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	12.6 V CT/6.3 V	2.5 VA	200 mA/400 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	28.6 mm	14A
Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED 14A-2.5R-20 Bel Signal Transformer 1: 10,69 € 43In Stock	Mfr. Part No. 14A-2.5R-20 Mouser Part No 530-14A-2.5R-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER 14A 2.5VA REVISED Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	43In Stock	10,69 € 9,77 € 9,37 € 9,07 € View 8,79 € 7,35 € 7,18 €	Min.: 1 Mult.: 1	115 VAC, 230 VAC	20 V CT/10 V	2.5 VA	120 mA/240 mA	Through Hole	Dual Primary Winding	Dual Secondary Winding	41.3 mm	36.5 mm	28.6 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA 14A-20-20 Bel Signal Transformer 1: 14,25 € 1In Stock	Mfr. Part No. 14A-20-20 Mouser Part No 530-14A-20-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 20VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	1In Stock	14,25 € 13,03 € 12,32 € 12,06 € View 11,55 € 11,19 € 10,53 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	20 V CT/10 V	20 VA	1 A/2 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	57.2 mm	47.6 mm	41.3 mm	14A
Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 30VA 14A-30-20 Bel Signal Transformer 1: 19,75 € 19In Stock	Mfr. Part No. 14A-30-20 Mouser Part No 530-14A-30-20	Bel Signal Transformer	Power Transformers - Board Mount TRANSFORMER ONE-4-ALL 30VA Learn More about Bel Signal Transformer signal transformer 14a transformers	Datasheet	19In Stock	19,75 € 17,23 € 16,68 € 15,58 € View 15,16 € 13,70 € 13,34 € Quote	Min.: 1 Mult.: 1	115 VAC, 230 VAC	20 V CT/10 V	30 VA	1.5 A/3 A	Through Hole	Dual Primary Winding	Dual Secondary Winding	66.7 mm	55.5 mm	39.7 mm	14A