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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • 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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • 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!! Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • 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
Line Voltage Regulator
75 amp / 400 Hz / 115v AC In / Out
(PS) SPR400
Superior Electric 75 amp, 400 Hz Line Voltage Regulator. Brand new, never used. Built in 1980. 115v AC in and out @ 400 Hz. Line Amps: 75.
  • Dimensions: 21" x 23" x 10.5".
$1,800
Variac
400 Hz / 3 Phase / 5.2 kva
More Images: Pic 2 | Pic 3 | Pic 4 | Pic 5
(TV) 7749
Standard Electric Production Co. variac. 400 Hz, 3 phase, 5.2 kva. 115v input each core, 300 - 1000 Hz. 27.5v DC control motor. Open delta - open delta start - stop end switches. 19.5" x 8"W x 8"H. New, unused. NSN: 5950-501-2358. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
$1,200 each
General Radio Motorized Variac
0 - 140v @ 10 amps / 1 phase
(TV) W10D8CKM
General Radio motorized variac. 115v AC with limit micro-switches. Enclosed. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120v, 50 / 60 Hz
  • Output: 0 - 140v @ 10 amps / 1 phase
  • Dimensions: 7" x 12" x 9-3/4"H
$275
Lewyt Motorized 2 Gang Variac
0 - 120v @ 7.5 amps each
0 - 240v @ 7.5 amps or 0 - 120v @ 15 amps
(TV) CN-354/FST-1
Lewyt motorized 2 gang variac. 115v, 60 Hz motor. New! Made in the 1960's. NOTE: Remove wood blocking before use. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120v / 240v
  • Output: 0 - 120v @ 7.5 amps each / 0 - 240v @ 7.5 amps or 0 - 120v @ 15 amps
  • Dimensions: 6" x 14" x 7"H
$325 each
General Radio Motorized Variac
0 - 240v @ 6 amps / 3 phase
(TV) W5G3DI6CKS2
General Radio Type W5G3DI6CKS2 motor driven variac. Motor driven with 115v motor. Only one available. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 0 - 240v (120v each section), 3 phase
  • Output: 0 -240v @ 6 amps
  • Dimensions: 4.5" x 6" x 17"H
$975
General Radio Motorized Variac
0 - 280v @ 2.4 amps / 50/60 Hz
(TV) W2G3D32CK
General Radio Type W2G3D32CK motorized variac. Motor driven with 115v motor, 50/60 Hz. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 0 - 240v (120v each section), 3 phase
  • Output: 0 -280v @ 2.4 amps
  • Dimensions: 3-1/8" x 4-1/2" x 16-1/2"H
$595 each
Staco Motorized Variac
0 - 240 / 280v @ 10 amps / 2.8 kva
(TV) 60M2520
Staco motorized variac. 120v motor. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v, 50 / 60 Hz, 1 phase
  • Output: 0 - 240 / 280v @ 10 amps / 2.8 kva
  • Dimensions: 8-3/4" x 8-3/4" x 11"H
$450
Powerstat Motorized Variac
0 - 280v @ 15 amps / 4.2 kva
(TV) 5N24GT
Powerstat motorized variac. Also manually adjusted by wood knob on top. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v, 50 / 60 Hz, 1 phase
  • Output: 0 - 280v @ 15 amps / 4.2 kva
  • Dimensions: 12" x 9-1/2" x 13"H
$650
Weschler Motorized Variac
0 - 208v @ 10 amps
(TV) 9T92C2445G44
Weschler motorized variac. 3 phase. Enclosed. New! Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 208v, 3 phase, 50 / 60 Hz
  • Output: 0 - 208v @ 10 amps
  • Dimensions: 8-1/4" x 8-1/4" x 24"H
$775
Powerstat Motorized Variac
0 - 280v @ 10 amps / 4.8 kva
(TV) 30M168T-3
Powerstat motorized variac. 3 phase. NOTE: Motor cover missing. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v, 3 phase, 60 Hz
  • Output: 0 - 280v @ 10 amps / 4.8 kva
  • Dimensions: 7-1/4" x 7-1/4" x 21"L
$695
Luxtrol Light Control
0 - 120v @ 16.7 amps / 2kw
(TV) 6MD2000
Luxtrol light control. 120v motor. Our variacs are the highest quality, MADE IN THE USA! Not poorly made imported copies.
  • Input: 120v, 50/60 Hz, 1 phase
  • Output: 0 - 120v @ 16.7 amps / 2kw
  • Dimensions: 8-1/2" x 11" x 14-1/2"H
$290
Powerstat Motorized Variac
0 - 280v @ 30 amps / 14.5 kva
(TV) 30M146U-3
Powerstat motorized variac. 120v AC motor. Micro-switch end stops. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v, 60 Hz, 3 phase
  • Output: 0 - 280v @ 30 amps / 14.5 kva
  • Dimensions: 9" x 10-1/2" x 22"H
$1,175
Rondi Deltacore Motorized Variac
0 - 280v @ 48 amps
(TV) MP22-12X2KNM
Rondi Deltacore motorized variac. 4 cores - 2 parallel for each leg. Belt missing. Drive motor condition unknown. can be operated manually with knob. Made in Italy.
  • Input: 220v, 50/60 Hz
  • Output: 0 - 280v @ 48 amps
  • Dimensions: 11" x 11" x 22"H
$950
Powerstat Motorized Variac
0 - 280v @ 50 amps / 24.2 kva
(TV) 30MB1156D-3
Powerstat motorized variac. 120v motor. Fused. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v, 60 Hz, 3 phase
  • Output: 0 - 280v @ 50 amps / 24.2 kva
  • Dimensions: 15"D x 28"H
$2,900
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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120/240v
  • Output: 0 - 240 vac @ 8.5 amps
  • Dimensions: 8-1/4" x 8"H, 10-1/2" with motor
$350 each - $299 (3+)
Powerstat Motorized Variac
240v
(TV) 236B-1069B
Powerstat motorized variac. 1 phase. 50/60 Hz. Control motor 115v AC. Includes rotation control microswitches. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 240v
  • Output: 0 - 240 vac @ 9 amps, 2.8kva
  • Dimensions: 8-1/4"w x 9"H, 9-1/2"d with motor
$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
$975 each
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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • 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
 
$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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • 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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Output: 0 - 120 vac @ 6 amps
  • Dimensions: 4-1/2" x 4-1/2" x 8"L
$135 each
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.
$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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Output: 0 - 120v @ 10 amps, 60 Hz
  • Dimensions: 4-1/2" x 10" x 5"H
$195 each
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. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
$225 each
General Radio Variac / Automatic Voltage Regulator
120v AC up to 8.4 amps
(TV) 1591-A
General Radio variac, automatic voltage regulator. Type 1591-A. Automatically maintains a constant 120v AC (adjustable 105 - 125v) up to 8.4 amps or 1000 watts. Perfect for use where line voltage fluctuates 100 - 130v. New condition! Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120v AC (Adjustable 105-125v) up to 8 amps
  • Dimensions: 5-1/4" x 11-3/4"W x 8-1/2"H
$550
Staco Motorized Variac
0 - 140v @ 5 amps
(TV) 15M501
Staco motorized variac with limit switches. Type 15M501. Well built, reliable motor driven variac. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120v
  • Output: 0 - 140 @ 5 amps
  • Dimensions: 5-1/4" x 9"L x 6-1/2"H
$139 each
Motorized Variac
0 - 140v @ 20 amps
(TV) W20D32CK
Motorized variac. Type W20D32CK. 3090-5716. 115v, 60 Hz motor. New, unused. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Output: 0 - 140v @ 20 amps
  • Dimensions: 7-1/2" x 8" x 10"L
$495
Technipower Motorized Dual Stack Variac
Each 0 - 140v @ 20 amps
(TV) W20G2CK
Technipower motorized dual stack variac. Type W20-2. 115v AC motor. New, unused. Alt. P/N: 3090-5726. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 0 - 280v, 50/60 Hz
  • Dual Output: Each 0 - 140v @ 20 amps
  • Dimensions: 7-1/2" x 7-1/2" x 14"L
$895
Dual Powerstat Motorized Variac
2 x 0 - 140v @ 4.5 amps / 0.63 kva
(TV) 5M21-2
Dual Powerstat motorized variac. 120v motor. Motor drives forward and reverse. Limit switches to prevent overrun. Use for 2-leg 240v. Brand new in the box!! Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 120v
  • Output: 2 x 0 - 140v @ 4.5 amps, 0.63 kva
  • Dimensions: 5-1/4" x 6-1/2" x 12" overall
$635 each
General Radio / Technipower Motorized Variac
0 - 240v @ 2.4 amps
(TV) W2G3M
General Radio / Technipower motorized variac. 3 phase. Bodine motor: 115v @ 60 Hz. Reversible motor with redundant end switches. One set for motor control and one set for indicating circuitry. Brand new!! Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Output: 0 - 240v @ 2.4 amps with 20v taps and center tap windings
  • Dimensions: 3-1/4" x 3-3/4" x 16-3/4"L
$850 each
Toshiba Motorized Variac
0 to 260v @ 5 amps
(TV) PS205B
Toshiba motorized variac. 100 vac motor control. Unit removed from service in excellent condition. Variac has been load tested. Motor assembly may or may NOT be functional. Variac is 5" diameter. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 200v
  • Output: 0 to 260v @ 5 amps
  • Dimensions: 6-5/8"H x 8-1/4"W x 8-3/4" deep
$115 each
Powerstat Motorized Variac
0 - 580v @ 7.5 amps / 7.3 kva
(TV) 15MC226T-3
Powerstat motorized variac. Looks new. Bolted down but never wired. Enclosed. Our variacs are the highest quality, MADE IN THE USA!. Not poorly made imported copies.
  • Input: 480v, 3 phase, 60 Hz
  • Output: 0 - 580v @ 7.5 amps, 7.3 kva
  • Dimensions: 6" x 8-1/2"H x 20"L
$950