Statco 1020B Variable Transformer

The 1020B Variable Transformer from Staco Energy Products Co. is a single‑phase variac that provides a smoothly adjustable AC source for lab testing and calibration. It accepts 240 VAC input at 50/60 Hz and delivers an output that can be varied from 0 to 280 VAC, rated to 3.5 A (approximately 0.98 kVA). In the plug‑and‑cord enclosed variant, such as 3PN1020B, the unit uses CW shaft rotation to increase the output voltage and exposes terminal connections configured for straightforward wiring of the load and source. Designed for bench and laboratory use, the 1020B supports voltage ramping tests on motors, power supplies, instrumentation, and other equipment powered from AC mains. As part of the 1000 Series of STACO variable transformers, it offers a compact, single‑phase voltage control solution suitable for test rigs and development work requiring a controllable AC source. Note that the 1020B family includes variations with different enclosure and connection options, but the 1020B model specifically provides 0–280 V output from a 240 V input, for applications operating in 50/60 Hz environments.