Power Transformers - Industrial – Mouser Switzerland

DU & SU Step-Up or Step-Down Transformers

Signal Transformer / Bel DU and SU Industrial Grade Step-Up or Step-Down Transformers allow users to adapt voltages for worldwide applications. The transformers are designed to provide a multitude of step-up or step-down voltage configurations to accommodate various input voltages. The series has a power rating of 250VA to 10kVA and a 2500V_rms hipot dielectric strength. Signal Transformer / Bel DU and SU Transformers feature plated brass screw-type terminals and can be chassis or rack-mounted.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (CHF) Filter the results in the table by unit price based on your quantity.	Qty.	Power Rating	Primary Voltage Rating	Secondary Voltage Rating	Mounting Style	Secondary Current Rating	Primary Winding	Secondary Winding	Length	Width	Height	Termination Style	Series
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-1/2 Bel Signal Transformer 1: 205.51 CHF 14In Stock	Mfr. Part No. DU-1/2 Mouser Part No 530-DU-1/2	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	14In Stock	205.51 CHF 185.11 CHF 185.00 CHF	Min.: 1 Mult.: 1	500 VA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	2.3 A/4.6 A	Dual Primary Winding	Dual Secondary Winding	134.9 mm	134.9 mm	133.4 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-1/2 Bel Signal Transformer 1: 194.24 CHF 16In Stock	Mfr. Part No. SU-1/2 Mouser Part No 530-SU-1/2	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	16In Stock	194.24 CHF 186.53 CHF	Min.: 1 Mult.: 1	500 VA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	1.15 A/2.3 A	Dual Primary Winding	Dual Secondary Winding	134.9 mm	134.9 mm	133.4 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-10 Bel Signal Transformer 1: 1 694.41 CHF 8In Stock	Mfr. Part No. DU-10 Mouser Part No 530-DU-10	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	8In Stock	1 694.41 CHF	Min.: 1 Mult.: 1	10 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	41 A/82 A	Dual Primary Winding	Dual Secondary Winding	228.6 mm	330.2 mm	203.2 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER SPLIT-TRAN DST-7 DU-1 Bel Signal Transformer 1: 357.38 CHF 11In Stock	Mfr. Part No. DU-1 Mouser Part No 530-DU-1	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER SPLIT-TRAN DST-7 Learn More about Bel Signal Transformer bel du su transformers	Datasheet	11In Stock	357.38 CHF	Min.: 1 Mult.: 1	1 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	4.5 A/9 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	158.8 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-1/4 Bel Signal Transformer 1: 165.35 CHF 12In Stock	Mfr. Part No. DU-1/4 Mouser Part No 530-DU-1/4	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	12In Stock	165.35 CHF 159.43 CHF 146.26 CHF	Min.: 1 Mult.: 1	250 VA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	1.1 A/2.2 A	Dual Primary Winding	Dual Secondary Winding	134.9 mm	107.9 mm	133.4 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-5 Bel Signal Transformer 1: 789.77 CHF 6In Stock	Mfr. Part No. SU-5 Mouser Part No 530-SU-5	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	6In Stock	789.77 CHF	Min.: 1 Mult.: 1	5 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	11.5 A/23 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	273.1 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-1/4 Bel Signal Transformer 1: 154.47 CHF 6In Stock	Mfr. Part No. SU-1/4 Mouser Part No 530-SU-1/4	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	6In Stock	154.47 CHF 146.87 CHF	Min.: 1 Mult.: 1	250 VA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	550 mA/1.1 A	Dual Primary Winding	Dual Secondary Winding	134.9 mm	107.9 mm	133.4 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-5 Bel Signal Transformer 1: 793.69 CHF 3In Stock	Mfr. Part No. DU-5 Mouser Part No 530-DU-5	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	3In Stock	793.69 CHF	Min.: 1 Mult.: 1	5 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	23 A/46 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	273.1 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-2 Bel Signal Transformer 1: 485.90 CHF 3In Stock	Mfr. Part No. SU-2 Mouser Part No 530-SU-2	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	3In Stock	485.90 CHF	Min.: 1 Mult.: 1	2 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	4.5 A/9 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	209.6 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-3 Bel Signal Transformer 1: 685.56 CHF 1In Stock	Mfr. Part No. DU-3 Mouser Part No 530-DU-3	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	1In Stock	685.56 CHF	Min.: 1 Mult.: 1	3 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	14 A/28 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	234.9 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial 4-40X1-3/8 SLOTTED PAN SCREW SU-1 Bel Signal Transformer 1: 348.79 CHF 10Expected 11/12/2026	Mfr. Part No. SU-1 Mouser Part No 530-SU-1	Bel Signal Transformer	Power Transformers - Industrial 4-40X1-3/8 SLOTTED PAN SCREW Learn More about Bel Signal Transformer bel du su transformers	Datasheet	10Expected 11/12/2026	348.79 CHF	Min.: 1 Mult.: 1	1 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	2.25 A/4.5 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	158.8 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-2 Bel Signal Transformer 10: 557.27 CHF Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. DU-2 Mouser Part No 530-DU-2	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	Non-Stocked Lead-Time 16 Weeks	557.27 CHF	Min.: 10 Mult.: 1	2 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	9 A/18 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	209.6 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO DU DU-7.5 Bel Signal Transformer 5: 1 668.53 CHF Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. DU-7.5 Mouser Part No 530-DU-7.5	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO DU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	Non-Stocked Lead-Time 16 Weeks	1 668.53 CHF	Min.: 5 Mult.: 5	7.5 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/104 V/110 V/120 V/208 V/220 V/240 V	Chassis	31 A/62 A	Dual Primary Winding	Dual Secondary Winding	228.6 mm	273.1 mm	203.2 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-10 Bel Signal Transformer 5: 1 621.62 CHF Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. SU-10 Mouser Part No 530-SU-10	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	Non-Stocked Lead-Time 16 Weeks	1 621.62 CHF	Min.: 5 Mult.: 5	10 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	20.5 A/41 A	Dual Primary Winding	Dual Secondary Winding	228.6 mm	330.2 mm	203.2 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-3 Bel Signal Transformer 10: 634.36 CHF Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. SU-3 Mouser Part No 530-SU-3	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	Non-Stocked Lead-Time 16 Weeks	634.36 CHF	Min.: 10 Mult.: 1	3 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	7 A/14 A	Dual Primary Winding	Dual Secondary Winding	192.1 mm	234.9 mm	187.3 mm	Screw	DU/SU
Power Transformers - Industrial TRANSFORMER POWER ISO SU SU-7.5 Bel Signal Transformer 5: 1 264.68 CHF Non-Stocked Lead-Time 16 Weeks	Mfr. Part No. SU-7.5 Mouser Part No 530-SU-7.5	Bel Signal Transformer	Power Transformers - Industrial TRANSFORMER POWER ISO SU Learn More about Bel Signal Transformer bel du su transformers	Datasheet	Non-Stocked Lead-Time 16 Weeks	1 264.68 CHF	Min.: 5 Mult.: 5	7.5 kVA	104 VAC/110 VAC/120 VAC/208 VAC/220 VAC/230 VAC/240 VAC	0 V/0 V/208 V/220 V/240 V/416 V/440 V/480 V	Chassis	15.5 A/31 A	Dual Primary Winding	Dual Secondary Winding	228.6 mm	273.1 mm	203.2 mm	Screw	DU/SU

DU & SU Step-Up or Step-Down Transformers

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