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.

Results: 16
Select Image Part #
 Mfr.
Description Datasheet Availability Pricing (CAD) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Power Rating
Primary Voltage Rating
Secondary Voltage Rating
Mounting Style
Secondary Current Rating
Primary Winding
Secondary Winding
Length
Width
Height
Series
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
6In Stock
Min.: 1
Mult.: 1

5 kVA 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 Chassis 11.5 A/23 A Dual Primary Winding Dual Secondary Winding 192.1 mm 273.1 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
12In Stock
Min.: 1
Mult.: 1

250 VA 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 Chassis 1.1 A/2.2 A Dual Primary Winding Dual Secondary Winding 134.9 mm 107.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
14In Stock
Min.: 1
Mult.: 1

500 VA 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 Chassis 2.3 A/4.6 A Dual Primary Winding Dual Secondary Winding 134.9 mm 134.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
9In Stock
Min.: 1
Mult.: 1

3 kVA 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 Chassis 7 A/14 A Dual Primary Winding Dual Secondary Winding 192.1 mm 234.9 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
5In Stock
Min.: 1
Mult.: 1

1 kVA 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 Chassis 2.25 A/4.5 A Dual Primary Winding Dual Secondary Winding 192.1 mm 158.8 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
7In Stock
Min.: 1
Mult.: 1

250 VA 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 Chassis 550 mA/1.1 A Dual Primary Winding Dual Secondary Winding 134.9 mm 107.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
3In Stock
5Expected 2026-08-07
Min.: 1
Mult.: 1

10 kVA 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 Chassis 41 A/82 A Dual Primary Winding Dual Secondary Winding 228.6 mm 330.2 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
12In Stock
Min.: 1
Mult.: 1

1 kVA 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 Chassis 4.5 A/9 A Dual Primary Winding Dual Secondary Winding 192.1 mm 158.8 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
7In Stock
Min.: 1
Mult.: 1

2 kVA 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 Chassis 9 A/18 A Dual Primary Winding Dual Secondary Winding 192.1 mm 209.6 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
2In Stock
Min.: 1
Mult.: 1

3 kVA 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 Chassis 14 A/28 A Dual Primary Winding Dual Secondary Winding 192.1 mm 234.9 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
4In Stock
Min.: 1
Mult.: 1

5 kVA 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 Chassis 23 A/46 A Dual Primary Winding Dual Secondary Winding 192.1 mm 273.1 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
18In Stock
Min.: 1
Mult.: 1

500 VA 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 Chassis 1.15 A/2.3 A Dual Primary Winding Dual Secondary Winding 134.9 mm 134.9 mm 133.4 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
4In Stock
Min.: 1
Mult.: 1

2 kVA 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 Chassis 4.5 A/9 A Dual Primary Winding Dual Secondary Winding 192.1 mm 209.6 mm 187.3 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

7.5 kVA 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 Chassis 31 A/62 A Dual Primary Winding Dual Secondary Winding 228.6 mm 273.1 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

10 kVA 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 Chassis 20.5 A/41 A Dual Primary Winding Dual Secondary Winding 228.6 mm 330.2 mm 203.2 mm DU/SU
Bel Signal Transformer Power Transformers - Industrial Power Isolation Transformer
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 5
Mult.: 5

7.5 kVA 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 Chassis 15.5 A/31 A Dual Primary Winding Dual Secondary Winding 228.6 mm 273.1 mm 203.2 mm DU/SU