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| PartNumber | M1020B-2 | M1020B-3 | M1020B |
| Description | Industrial Control Transformers 0-480/560V out 3.5A 480/240Vin Single | Industrial Control Transformers 0-480/560V out 3.5A 480/240Vin 3-Phase | Industrial Control Transformers 0-240/280V out 10A 240/120Vin Single |
| Manufacturer | Staco | Staco | Staco |
| Product Category | Industrial Equipment | Industrial Equipment | Industrial Equipment |
| Series | 1000 | 1000 | 1000 |
| Product | Industrial Control Transformers | Industrial Control Transformers | Industrial Control Transformers |
| Type | Variable Transformers | Variable Transformers | Variable Transformers |
| Unit Weight | 34 lbs | 46 lbs | 22 lbs |
| Mounting Style | Chassis | Chassis | Chassis |
| Height | 152.4 mm | 152.4 mm | 152.4 mm |
| Length | 261.9 mm | 384.2 mm | 139.7 mm |
| Width | 188.8 mm | 188.8 mm | 188.8 mm |
| Power Rating | 0.73 kV 0.84 kV 1.45 kV 1.68 kV 1.7 kV 1.96 kV | 1.46 kV 2.91 kV 3.4 kV | 0.42 kV 0.84 kV 0.98 kV |
| Primary Voltage Rating | 120 V 240 V 480 V | 240 V 480 V | 120 V 240 V |
| Secondary Voltage Rating | 0 V to 240 V/280 V 0 V to 480 V/560 V | 0 V to 480 V/560 V | 0 V to 120 V/140 V 0 V to 240 V/280 V |
| Secondary Current Rating | 3.5 A | 3.5 A | 3.5 A |
| Operating Frequency | 50 Hz/60 Hz | 50 Hz/60 Hz | 50 Hz/60 Hz |