The STACO 3PN1010 is a manually operated variable autotransformer that delivers adjustable AC voltage output from 0–120 VAC (0–140 VAC range). Designed for benchtop, industrial, and laboratory environments, this single-phase unit operates at 50/60 Hz and is housed in a rugged steel enclosure. The autotransformer accepts 120 VAC input and supplies up to 10 A maximum output current at 1.4 kVA apparent power. A graduated control knob enables voltage adjustment across the full 0–100% range. The unit ships with a 3-prong input cord and plug (NEMA 5-15P) and includes an illuminated on/off switch, output receptacle (NEMA 5-15R), and output fuse for protection. Manufactured in the USA and CSA-listed, the 3PN1010 meets NAFTA requirements. Approximate weight is 11–13.78 lbs with compact benchtop dimensions of 6.960″ L × 4.620″ W × 5.500″ H.
Technical Specifications
• Input Voltage: 120 VAC
• Output Voltage: 0–120 VAC / 0–140 VAC (adjustable)
• Maximum Output Current: 10 A
• Apparent Power: 1.4 kVA
• Primary Current: 10 A
• Secondary Current: 15 A
• Frequency: 50/60 Hz (400 Hz available on some variants)
• Phase: Single-phase
• Turns Ratio: 1:40
• Output Fuse: 12 A
– Key Features
• Manual knob control with 0–100% graduated voltage adjustment
• Illuminated on/off switch for convenient operation
• Enclosed steel construction for durability and safety
• Integrated output fuse protection (12 A)
• Industry-standard NEMA 5-15P input and NEMA 5-15R output connectors
• USA-manufactured quality
• CSA agency listing
– Typical Applications
• AC voltage regulation in industrial test and commissioning work
• Laboratory power supply conditioning
• Equipment burn-in and thermal cycling
• Sensitive load protection during startup transients
– Compatibility & Integration
The 3-prong configuration (3PN designation) ensures compatibility with standard North American 120 VAC power infrastructure. Output receptacle accepts standard NEMA 5-15R loads up to 10 A continuous.
