Staco Energy Products 5A 0.7KVA Variac Variable Auto Transformer 501

The Staco Energy Products 501C is a versatile and durable variable auto transformer designed for precise voltage control in various applications.

Key Features

• Input Voltage: 120 VAC at 50/60 Hz
• Output Voltage: Adjustable from 0 to 120 VAC, with the capability to reach up to 140 VAC under constant current conditions
• Current Rating: 5 Amperes for constant current loads; 7 Amperes for constant impedance loads at line voltage
• Power Rating: 0.7 kVA
• Mounting: Panel mount with both single-point and four-point mounting options
• Construction: Open construction with Faston® terminals, easily convertible to screw connections using the provided terminal adapter kits

Design and Functionality

The 501C features a coil tapping arrangement that allows for output voltages ranging from 0 to line voltage, or up to 17% above line voltage under constant current conditions. Its compact design ensures efficient operation without waveform distortion or noise, making it suitable for applications requiring precise voltage adjustments. The unit can operate at frequencies up to 2000 Hz without derating, providing flexibility across various operational environments.

Applications

Ideal for OEM applications, the 501C’s panel mount and fixed shaft design make it suitable for integration into equipment requiring variable voltage control. Its robust construction and reliable performance ensure consistent operation in industrial and laboratory settings.

Additional Information

For applications requiring automated control, motor-driven versions of the 501C are available, identified by the prefix “M” in the model number. These units feature synchronous motors designed for operation on 120 VAC, 50/60 Hz single-phase lines, drawing approximately 0.3 Amperes. Travel times from 0 to maximum voltage can be specified as 5, 15, 30, or 60 seconds, depending on application requirements.

The Staco Energy Products 501C variable auto transformer combines precision, versatility, and durability, making it a reliable choice for applications demanding accurate voltage control.