Variable Transformers

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Mfr Part #	Quantity Available	Price	Series	Package	Product Status	Type	Output Type	Voltage - Output	Voltage - Supply	Input Type	Constant Current Load - Max	Size

221-B VARIABLE TRANSFORMER 132V 2.5A Staco Energy Products Company	29 In Stock	1 : R3 822,00000 Bulk	200	Bulk	Active	Panel Mount	Terminals	120VAC, 132VAC	120VAC	Terminals	2.5A (0.33kVA)	2.940" Dia x 2.120" L (74.68mm x 53.85mm)
3PN1010B VARIABLE TRANSFORMER 140V 10A Staco Energy Products Company	40 In Stock	1 : R12 039,30000 Bulk	3PN	Bulk	Active	Bench	Receptacle	140VAC	120VAC	Plug, 6' Cord	10A (1.4kVA)	6.960" L x 4.620" W x 5.500" H (176.78mm x 117.35mm x 139.70mm)
3PN1210B VARIABLE TRANSFORMER 120V 12A Staco Energy Products Company	44 In Stock	1 : R13 950,30000 Box	3PN	Box	Active	Bench	Receptacle	120VAC	120VAC	Plug, 6' Cord	12A (1.44kVA)	6.960" L x 4.620" W x 5.500" H (176.78mm x 117.35mm x 139.70mm)
171 VARIABLE TRANSFORMER 132V 1.75A Staco Energy Products Company	4 In Stock	1 : R3 822,00000 Bulk	100	Bulk	Active	Panel Mount	Terminals	120VAC, 132VAC	120VAC	Terminals	1.75A (0.23kVA)	2.940" Dia x 1.880" L (74.68mm x 47.75mm)
291 VARIABLE TRANSFORMER 132V 3A Staco Energy Products Company	40 In Stock	1 : R5 350,80000 Bulk	200	Bulk	Active	Panel Mount	Terminals	120VAC, 132VAC	120VAC	Terminals	3A (0.4kVA)	2.930" Dia x 2.310" L (74.40mm x 58.67mm)
511 VARIABLE TRANSFORMER 140V 5A Staco Energy Products Company	11 In Stock	1 : R5 733,00000 Bulk	500	Bulk	Active	Panel Mount	Terminals	120VAC, 140VAC	120VAC	Terminals	5A (0.7kVA)	4.160" L x 3.940" W x 2.380" H (105.66mm x 100.08mm x 60.45mm)
501C VARIABLE TRANSFORMER 140V 5A Staco Energy Products Company	17 In Stock	1 : R6 497,40000 Bulk	500	Bulk	Active	Panel Mount	Terminals	120VAC, 140VAC	120VAC	Terminals	5A (0.7kVA)	4.380" L x 3.750" W x 3.000" H (111.25mm x 95.25mm x 76.20mm)
1010B VARIABLE TRANSFORMER 140V 10A Staco Energy Products Company	11 In Stock	1 : R7 835,10000 Bulk	1000	Bulk	Active	Panel Mount	Terminals	120VAC, 140VAC	120VAC	Terminals	10A (1.4kVA)	5.570" L x 4.380" W x 4.160" H (141.48mm x 111.25mm x 105.66mm)
3PN1020B VARIABLE TRANSFORMER 280V 3.5A Staco Energy Products Company	6 In Stock	1 : R14 332,50000 Bulk	3PN	Bulk	Active	Bench	Receptacle	280VAC	240VAC	Plug, 6' Cord	3.5A (0.98kVA)	6.960" L x 4.620" W x 5.500" H (176.78mm x 117.35mm x 139.70mm)
3PN1520B VARIABLE TRANSFORMER 280V 9.5A Staco Energy Products Company	6 In Stock	1 : R21 976,50000 Box	3PN	Box	Active	Bench	Receptacle	280VAC	240VAC	Plug, 6' Cord	9.5A (2.66kVA)	9.350" L x 6.240" W x 6.000" H (237.49mm x 158.50mm x 152.40mm)
3PN2210B VARIABLE TRANSFORMER 140V 22A Staco Energy Products Company	3 In Stock	1 : R31 149,30000 Box	3PN	Box	Active	Bench	Receptacle	140VAC	120VAC	Plug, 6' Cord	22A (3.08kVA)	10.850" L x 7.950" W x 6.310" H (275.59mm x 201.93mm x 160.27mm)
3PN2520B VARIABLE TRANSFORMER 280V 10A Staco Energy Products Company	2 In Stock	1 : R31 149,30000 Bulk	3PN	Bulk	Active	Bench	Receptacle	280VAC	240VAC	Plug, 6' Cord	10A (2.8kVA)	10.850" L x 7.950" W x 6.310" H (275.59mm x 201.93mm x 160.27mm)
5021CT VARIABLE TRANSFORMER 280V 28A Staco Energy Products Company	3 In Stock	1 : R53 317,09000 Bulk	5000	Bulk	Active	Panel Mount	Terminals	240VAC, 280VAC	120VAC, 240VAC	Terminals	28A (7.8kVA)	17.940" L x 14.130" W x 7.250" H (455.68mm x 358.90mm x 184.15mm)
1210B VARIABLE TRANSFORMER 120V 12A Staco Energy Products Company	7 In Stock	1 : R8 790,60000 Bulk	1200	Bulk	Active	Panel Mount	Terminals	120VAC	120VAC	Terminals	12A (1.44kVA)	5.570" L x 4.380" W x 4.160" H (141.48mm x 111.25mm x 105.66mm)
3PN221B VARIABLE TRANSFORMER 132V 2.5A Staco Energy Products Company	2 In Stock	1 : R10 510,50000 Bulk	3PN	Bulk	Active	Bench	Receptacle	132VAC	120VAC	Plug, 6' Cord	2.5A (0.33kVA)	6.060" L x 5.310" W x 4.100" H (153.92mm x 134.87mm x 104.14mm)
1020B VARIABLE TRANSFORMER 280V 3.5A Staco Energy Products Company	3 In Stock	1 : R10 510,50000 Bulk	1000	Bulk	Active	Panel Mount	Terminals	240VAC, 280VAC	120VAC, 240VAC	Terminals	3.5A (0.98kVA)	5.570" L x 4.380" W x 4.160" H (141.48mm x 111.25mm x 105.66mm)
3PN1010BV VARIABLE TRANSFORMER 140V 10A Staco Energy Products Company	3 In Stock	1 : R19 874,40000 Bulk	3PN	Bulk	Active	Bench	Receptacle	140VAC	120VAC	Plug, 6' Cord	10A (1.4kVA)	6.960" L x 4.620" W x 5.500" H (176.78mm x 117.35mm x 139.70mm)
2520 VARIABLE TRANSFORMER 280V 10A Staco Energy Products Company	2 In Stock	1 : R21 403,20000 Bulk	2500	Bulk	Active	Panel Mount	Terminals	240VAC, 280VAC	120VAC, 240VAC	Terminals	10A (2.8kVA)	8.310" L x 7.620" W x 4.380" H (211.07mm x 193.55mm x 111.25mm)
3PN1510B VARIABLE TRANSFORMER 140V 15A Staco Energy Products Company	2 In Stock	1 : R21 976,50000 Box	3PN	Box	Active	Bench	Receptacle	140VAC	120VAC	Plug, 6' Cord	15A (2.1kVA)	9.350" L x 6.240" W x 6.000" H (237.49mm x 158.50mm x 152.40mm)
5011CT-2S VARIABLE TRANSFORMER 280V 50A Staco Energy Products Company	2 In Stock	1 : R102 047,59000 Bulk	5000	Bulk	Active	Panel Mount	Terminals	280VAC	240VAC	Terminals	50A (14kVA)	21.560" L x 20.000" W x 13.250" H (547.62mm x 508.00mm x 336.55mm)
30M501C-2 MOTORIZED VRBLE TRANSF 280V 5A Staco Energy Products Company	5 In Stock	1 : R50 641,69000 Bulk	500	Bulk	Active	Panel Mount	Terminals	120VAC, 140VAC, 240VAC, 280VAC	120VAC, 240VAC	Terminals	5A (1.4kVA)	6.560" L x 5.250" W x 13.230" H (166.62mm x 133.35mm x 336.04mm)
221-B-3 VARIABLE TRANSFORMER 240V 2.5A Staco Energy Products Company	3 In Stock	1 : R17 791,41000 Bulk	200	Bulk	Active	Panel Mount	Terminals	240VAC	240VAC	Terminals	2.5A (1.04kVA)	3.880" Dia x 8.120" L (98.55mm x 206.25mm)
L501B VARIABLE TRANSFORMER 140V 4.5A Staco Energy Products Company	9 In Stock	1 : R15 288,00000 Bulk	L	Bulk	Active	Bench	Receptacle	140VAC	120VAC	Plug, 6' Cord	4.5A (0.63kVA)	5.370" L x 5.620" W x 7.750" H (136.40mm x 142.75mm x 196.85mm)
1210BCT-3 VARIABLE TRANSFORMER 240V 12A Staco Energy Products Company	2 In Stock	1 : R41 086,50000 Bulk	1200	Bulk	Active	Panel Mount	Terminals	240VAC	240VAC	Terminals	12A (4.96kVA)	6.880" L x 6.000" W x 14.880" H (174.75mm x 152.40mm x 377.95mm)
1220B VARIABLE TRANSFORMER 240V 5A Staco Energy Products Company	0 In Stock Check Lead Time	1 : R10 701,60000 Bulk	1200	Bulk	Active	Panel Mount	Terminals	240VAC	240VAC	Terminals	5A (1.2kVA)	5.570" L x 4.380" W x 4.160" H (141.48mm x 111.25mm x 105.66mm)

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Variable transformers, or adjustable voltage transformers, allow the user to select an output voltage while maintaining a fixed amperage rating. These transformers have one voltage winding that is tapped at various points to provide multiple output voltages. They are available in bench or panel mount with receptacle or terminal output options, plug or terminal input options, and a wide variety of supply and output voltages.

Variable Transformers

Variable Transformers

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