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 : $326.56000 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	41 In Stock	1 : $1,028.66000 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 : $1,191.94000 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 : $326.56000 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 : $457.18000 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 : $489.84000 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 : $555.15000 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 : $669.45000 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 : $1,224.60000 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 : $1,877.72000 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 : $2,661.46000 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 : $2,661.46000 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 : $4,555.53000 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 : $751.09000 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	3 In Stock	1 : $898.04000 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 : $898.04000 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 : $1,698.11000 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 : $1,828.74000 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 : $1,877.72000 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 : $8,719.17000 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 : $4,326.94000 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 : $1,520.14000 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 : $1,306.24000 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 : $3,510.52000 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 : $914.37000 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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