Staco & General Radio Motorized Variacs
Superior Stabiline Voltage Regulator
220 / 240v - 230v Nominal - 74 kva
(TV) EMT6270D8
Superior Stabiline voltage regulator. 3 phase. Original spare for Harris transmitter, P/N: 750-2938-000. We are uncertain of the date of manufacture but suspect the 1980's. New, never used.
  • Input: 196 - 225v, 3 phase @ 50/60 Hz
  • Output: Settable 220 / 240v (230v nominal)
  • Dimensions (Actual): 27" x 31" x 45"H
  • Dimensions (Shipping): 32" x 37" x 49"H
$5,500 each

Staco Voltage Regulator
208Y / 120v @ 125 amps - 45 kva

(TV) MVR-20WC1Y045
Staco voltage regulator. 3 phase. Like new. Unit was purchased and replaced with larger unit after hours of use. Manufacturer's Model Number: MVR20WC1Y045.

  • Input: 166 - 299v, 3 phase @ 60 Hz
  • Output: 208Y / 120v @ 125 amps
  • Dimensions: 36" x 25" x 53"H
$6,995 each

 

Motorized Variac
3.5 Amps / 1 Phase / 120 vac

Manufacturer's Tag

(TV) 620783-1
Navy surplus motorized variac. Reversible control motor. 3.5 amps, 120 vac, 1 phase (2 windings, 1 for each 240v leg). NSN: 5950-01-057-5612. New in the box!!

  • Input: 480v, 1 phase, 50/60 Hz
  • Output: 0 - 480v, 3.5 amps
  • Dimensions: 16"L x 7-1/2" x 7-1/2"
 
 
$2,995 each
 

General Electric Motorized Variac
120/240v / 50/60 Hz

(TV) 9T92A3052
General Electric motorized variac. 1 phase. 50/60 Hz. Control motor 115v AC. Includes rotation control microswitches. This variac is unique because either 120v or 240v can be input to generate 0-240v output.

  • Input: 120/240v
  • Output: 0 - 240 vac @ 8.5 amps
  • Dimensions: 8-1/4" x 8"H, 10-1/2" with motor.
 

Powerstat Motorized Variac
240v

(TV) 236B-1069B
Powerstat motorized variac. 1 phase. 50/60 Hz. Control motor 115v AC. Includes rotation control microswitches.

  • Input: 240v
  • Output: 0 - 240 vac @ 9 amps, 2.8kva
  • Dimensions: 8-1/4"w x 9"H, 9-1/2"d with motor.
$350 each - $299 (3+)
 
$325 each

Automatic Voltage Regulator
57 amps / 6.6 kva

(EQP) AVR12057BR
BRAND NEW IN THE BOX!! Staco AVR12057BR smooths out flucuating, unstable voltage. It is a single phase line voltage regulator comprised of a motor driven variable transformer, a buck-boost fixed ratio transformer, a Solid State electronic control unit and associated front panel controls and voltmeter which displays the regulated output voltage. The terminal block for input and output connections is mounted on the back of the unit next to the ground lug and fuse.

  • Frequency range: 47-63 Hz
  • Input volts: 95 - 135 vac
  • Output voltage in fully adjustable and settable to ANY voltage between 110 - 120 vac! Nominal output is 115 volts
  • Output amps: 57 amps, 6.6 kva
  • Accuracy is 0.75%
  • Correction Rate is 0.075 sec/volt
  • Meter Scale is 0 - 150 volts. Complete with installation and operating instructions
  • 10-1/2" high. Fits 19" rack
  • OEM over $3,000
 

Staco Heavy Duty Variac
0 - 120v @ 20 amps

(TV) 033-6565
Staco heavy duty motorized variac. 12 vdc motor control. Unit removed from service in excellent condition. Variac has been load tested. Variac is 6-3/4" diameter.

  • Input: 90 - 132 vac
  • Output: 0 - 120v @ 20 amps
  • Dimensions: 7-1/8"H x 8"W x 11" deep
  • Weight: 35 lbs

Although designed for 12 vdc operation, the motor will run at lower voltages with correspondingly longer rotation times. Viewed from the shaft end, rotation is clockwise with the red lead to positive, black lead to negative. Connections must be reversed to reverse rotation. There are no limit switches to stop the motor at the end of rotation. Power must be removed to stop. Rotation time may vary slightly in each direction. Motor draws less than 200 mA.

The voltages and approximate times are listed below:

Applied voltage Rotation Time
5v 10 seconds
7v 6 seconds
9v 5 seconds
11v 4 seconds
13v 3 seconds
16v 3 seconds
 
$975 each
 
$149 each - $139 (3+), $125 (10+)

Staco Motorized Variac
0 - 240v @ 10 amps

(TV) 033-7015
Staco motorized variac. Unit removed from service in excellent condition. Variac has been load tested. Motor assembly may or may NOT be functional. Variac is 6-3/4" diameter and measures 1" from metal screen.

  • Input: 240v
  • Output: 0 - 240v @ 10 amps, 2.4 kva, 50/60 Hz
  • Dimensions: 8-1/4"H x 8-1/4"W x 10-1/8" deep
$350 each - $299 (3+)

General Radio Variac
0 - 120 vac @ 6 amps

(TV) M5BB
General Radio motorized variac. 350 / 450 Hz. Motor control 115 vac, 60 Hz.

  • Output: 0 - 120 vac @ 6 amps
  • Dimensions: 4-1/2" x 4-1/2" x 8"L
 

Induction Voltage Regulator
115 vac - 16.2 amps Max

Adjust Line from 80 vac - 150 vac
(TV) 7379484
General Electric induction voltage regulator. 115 vac, ±30.4%, 60 Hz, 16.2 amps max. Can adjust manually with knob or electrically with 115 volt drive motor. 115 vac. Removed from rotary spark gap. 9" x 10" x 23" high. Weighs 132 pounds.
$135 each
 
$350 each

Motor Driven Variac
0 - 120v @ 10 amps

(TV) W8L
General Radio motor driven variac. Bodine motor 115 vac, 60Hz, 9 watts. Reversible too! Used, removed but in excellent condition.

  • Output: 0 - 120v @ 10 amps, 60 Hz
  • Dimensions: 4-1/2" x 10" x 5"H
 

Motor Driven Variac
0 - 120v @ 10 amps

(TV) W8L-KNB
General Radio motor driven variac. Same as left except knob and dial are on opposite end for manual setting of variac.

$195 each
 
$225 each