Staco Energy 3PN1020B Variable Autotransformer, 220–280V AC, 10A, 2.8kVA Output

Staco Energy 3PN1020B Variable Autotransformer, 220–280V AC, 10A, 2.8kVA Output

Condition: Used. Good used condition. May show signs of wear but fully functional.

The Staco Energy 3PN1020B Variable Autotransformer is a robust and reliable variable transformer designed to provide precise voltage control for a wide range of applications. With an adjustable output of 220 to 280 volts AC and a power rating of 2.8 kVA, this autotransformer is suitable for industrial, laboratory, educational, and maintenance use. Its durable design ensures consistent performance, while the adjustable rotary dial allows for fine-tuned voltage selection. This unit is perfect for voltage-sensitive equipment testing, repair, and calibration tasks.

Features
Model: 3PN1020B
Manufacturer: Staco Energy Products Co.
Type: Variable Autotransformer (Variac)
Input Voltage: 220V AC
Output Voltage: Adjustable 220 to 280V AC
Maximum Output Current: 10 Amps
Power Rating: 2.8 kVA (2,800 VA)
Frequency: 50/60 Hz (compatible with international standards)
Output Control: Precision rotary dial for smooth voltage adjustment
Cooling System: Natural air cooling (open-frame design)
Construction: Durable metal housing for long-term reliability
Mounting Style: Bench-top or panel mount (user-configurable)
Connection Type: Screw terminal connections for input/output
Overcurrent Protection: Built-in thermal protection for safe operation

Applications
Industrial Equipment Testing: Provide adjustable voltage for testing and calibration of machinery and electronics.
Laboratory Use: Precision voltage control for sensitive instruments and experiments.
Educational Demonstrations: Perfect for teaching electrical principles in technical schools.
Maintenance and Repair: Simulate various voltage conditions for equipment repair.
Power Conditioning: Maintain stable voltage for voltage-sensitive devices.

Cross-Referenced Models
Staco Energy 3PN1010B (Lower Current Model – 10A, 110V)
Staco Energy 3PN1020 (Non-Bench Model)
Superior Electric Powerstat 116B (Similar Specifications)
General Radio W10MT3 Variac (High-Precision Alternative)

Comparable Products
Variac TDGC2-3KM (3kVA Variable Transformer)
Acme Electric Variable Autotransformer (2.8kVA)
Superior Electric 3PN116 (Higher Capacity, 3kVA)
General Radio 10B Variac (High-Precision Model)

Assembly & System Use
Installation Instructions:
Select Mounting Location: Secure the unit on a stable surface (bench or panel mount).
Connect Input Voltage: Use the screw terminals for 220V AC input.
Connect Output Load: Attach the output wires to the designated output terminals.
Adjust Voltage Output: Use the rotary dial to set the desired output voltage (220-280V).
Monitor Output: Use an external voltmeter (recommended) for precise voltage reading.
Operate Safely: Do not exceed the 10A output current limit.
Safety Tips:
Always ensure the autotransformer is properly grounded.
Avoid operating in damp environments.
Do not exceed the 2.8kVA power rating.
Allow for adequate ventilation around the unit to prevent overheating.
Regularly inspect the unit for signs of wear or damage.

Technical Specifications

Related
Staco Energy variable autotransformer
adjustable voltage transformer 220V
bench-top variable transformer
precision autotransformer for lab use
Staco Energy 3PN series variac
high-power autotransformer 2.8kVA

Common Requests:
-Can this autotransformer be used with 110V AC input?
No, the Staco 3PN1020B is specifically designed for 220V input.
-Is this autotransformer compatible with 60 Hz and 50 Hz systems?
Yes, it is designed for both 50 Hz and 60 Hz frequency operation.
-Can I use this for motor speed control?
It can be used to adjust voltage for universal (brush-type) motors, but not for AC induction motors without a dedicated speed controller.
-Is this a true isolation transformer?
No, this is an autotransformer, meaning the input and output are electrically connected.
-Does it include a voltmeter or ammeter?
No, an external meter is recommended for precise voltage monitoring.

All product names, trademarks, and registered trademarks are the property of their respective owners. Use of these names does not imply any affiliation or endorsement.

P120