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 2500Vrms 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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Description Datasheet Availability Pricing (IDR) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Primary Voltage Rating
Secondary Voltage Rating
Power Rating
Secondary Current Rating
Mounting Style
Primary Winding
Secondary Winding
Length
Width
Height
Series
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
3In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 10 kVA 41 A/82 A Chassis Dual Primary Winding Dual Secondary Winding 228.6 mm 330.2 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
10In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 2 kVA 9 A/18 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 209.6 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
5In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 3 kVA 14 A/28 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 234.9 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
9In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 3 kVA 7 A/14 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 234.9 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
5In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 1 kVA 2.25 A/4.5 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 158.8 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
7In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 250 VA 550 mA/1.1 A Chassis Dual Primary Winding Dual Secondary Winding 134.9 mm 107.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
10In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 5 kVA 11.5 A/23 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 273.1 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
16In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 500 VA 2.3 A/4.6 A Chassis Dual Primary Winding Dual Secondary Winding 134.9 mm 134.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
12In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 250 VA 1.1 A/2.2 A Chassis Dual Primary Winding Dual Secondary Winding 134.9 mm 107.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
7In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 5 kVA 23 A/46 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 273.1 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
22In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 500 VA 1.15 A/2.3 A Chassis Dual Primary Winding Dual Secondary Winding 134.9 mm 134.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
7In Stock
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 2 kVA 4.5 A/9 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 209.6 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
1In Stock
14Expected 26/03/2026
Min.: 1
Mult.: 1

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 1 kVA 4.5 A/9 A Chassis Dual Primary Winding Dual Secondary Winding 192.1 mm 158.8 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 208 V, 220 V, 240 V/0 V, 104 V, 110 V, 120 V 7.5 kVA 31 A/62 A Chassis Dual Primary Winding Dual Secondary Winding 228.6 mm 273.1 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 10 kVA 20.5 A/41 A Chassis Dual Primary Winding Dual Secondary Winding 228.6 mm 330.2 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

208 VAC, 220 VAC, 230 VAC, 240 VAC/104 VAC, 110 VAC, 120 VAC 0 V, 416 V, 440 V, 480 V/0 V, 208 V, 220 V, 240 V 7.5 kVA 15.5 A/31 A Chassis Dual Primary Winding Dual Secondary Winding 228.6 mm 273.1 mm 203.2 mm DU/SU