Power Transformers - Industrial

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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 (IDR) 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: Rp4.706.116 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	Rp4.706.116 Rp4.243.430 Rp4.198.666	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: Rp4.542.286 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	Rp4.542.286 Rp4.203.069 Rp4.106.385	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: Rp38.611.909 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	Rp38.611.909	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: Rp8.076.827 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	Rp8.076.827	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 SU SU-3 Bel Signal Transformer 1: Rp14.533.701 9In Stock	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	9In Stock	Rp14.533.701	Min.: 1 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-1/4 Bel Signal Transformer 1: Rp3.598.384 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	Rp3.598.384 Rp3.346.494 Rp3.259.534 Rp3.206.881 View Quote	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-1/4 Bel Signal Transformer 1: Rp3.800.924 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	Rp3.800.924 Rp3.605.356 Rp3.330.900 Rp3.283.200 View Quote	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 DU DU-2 Bel Signal Transformer 1: Rp12.700.752 7In Stock	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	7In Stock	Rp12.700.752	Min.: 1 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-5 Bel Signal Transformer 1: Rp18.089.156 4In 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	4In Stock	Rp18.089.156	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: Rp11.074.196 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	Rp11.074.196	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 SU SU-5 Bel Signal Transformer 1: Rp17.999.811 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	Rp17.999.811	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 DU DU-3 Bel Signal Transformer 1: Rp15.624.738 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	Rp15.624.738	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: Rp7.949.322 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	Rp7.949.322	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-7.5 Bel Signal Transformer 5: Rp38.027.772 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	Rp38.027.772	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: Rp37.268.064 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	Rp37.268.064	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-7.5 Bel Signal Transformer 5: Rp28.823.401 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	Rp28.823.401	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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