Variacs
Variacs are adjustable transformers commonly used in electrical equipment to control voltage levels. These devices are essential for testing and regulating the output of power supplies, motors, and other electrical components. Variacs operate by adjusting the turns ratio of the transformer, allowing users to increase or decrease the voltage output as needed. They are versatile tools suitable for a wide range of applications, including electronics testing, industrial equipment calibration, and laboratory experiments. Variacs are known for their precision and reliability, making them a popular choice among engineers and technicians working with electrical systems.
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General Radio W10 Variac Variable Autotransformer 120V 10A 50-60Hz Panel
General Radio Company
$175.00Was: $500.00General Radio W10 Variac Variable Autotransformer 120V 10A 50-60Hz Panel The General Radio Company W10 is a panel-mount variable autotransformer — commonly known by the Variac trade name — designed to provide continuously adjustable AC output voltage...53217- SKU:
- 53217
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 16.00 LBS
- Brand:
- General Radio Company
- Model:
- W10
- MPN:
- W10
- Type:
- Variable Autotransformer (Variac)
- SKU:
- 53217
- Condition:
- Used – Pulled from Working Environment
- Input Voltage:
- 120V AC
- Current Rating:
- 10 Amperes
- Frequency:
- 50-60 Hz
- Phase:
- Single Phase
- Output Voltage:
- 0-120V AC (variable)
- Form Factor:
- Panel Mount
- Terminal Configuration:
- 5 screw terminals on top plate
- Winding Style:
- Toroidal
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Unit only — no enclosure or mounting hardware included.
- Condition Notes:
- This General Radio Company W10 Variac Variable Autotransformer has been inspected and is in good used condition. The unit was pulled from a working environment where it was previously in service.
$175.00Was: $500.00 -
General Radio W2M Variac Autotransformer 0-140V 2A 120V 50-60Hz Benchtop
General Radio
$110.00Was: $225.00General Radio W2M Variac Autotransformer 0-140V 2A 120V 50-60Hz BenchtopThe General Radio W2M is a benchtop variable autotransformer — marketed under General Radio's registered Variac trade name — that accepts a standard 120V AC line input and delivers a...46425- SKU:
- 46425
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 9.00 LBS
- Brand:
- General Radio
- Model:
- W2M
- MPN:
- W2M
- Type:
- Variable Autotransformer (Variac)
- SKU:
- 46425
- Condition:
- Used – Inspected
- Form Factor:
- Benchtop
- Input Voltage:
- 120V AC
- Output Voltage Range:
- 0-140V AC
- Current Rating:
- 2 Amps
- Frequency:
- 50-60 Hz
- Phase:
- Single Phase
- Wiring Configuration:
- One side common to line and load
- Patent Number:
- US Pat. 2949592
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Includes unit only; inspected and in good condition.
- Condition Notes:
- General Radio W2M Variac autotransformer inspected and in good used condition. Steel enclosure shows typical bench wear; nameplate intact, control knob turns freely, binding posts present. No damage noted.
$110.00Was: $225.00 -
General Radio Type 200B Variac Adjustable Transformer 115V 170VA 0-185V Out
General Radio Company
$50.00Was: $100.00General Radio Type 200B Variac Adjustable Transformer 115V 170VA 0-185V OutSingle-phase variable autotransformer for laboratory and industrial use. Provides continuously adjustable AC output from 0 to 185V when supplied with 115V input, enabling voltage...47559- SKU:
- 47559
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 6.00 LBS
- Brand:
- General Radio
- Model:
- Type 200B
- MPN:
- 200B
- Type:
- Variable Autotransformer (Variac)
- SKU:
- 47559
- Condition:
- Used – Pulled from Working Environment
- Primary Voltage:
- 115V AC
- Output Voltage Range:
- 0 – 185V AC
- Power Rating:
- 170 VA
- Current Rating (Rated):
- 1A
- Current Rating (Max):
- 1.5A
- Phase:
- Single Phase
- Form Factor:
- Benchtop / Open Frame
- Dimensions:
- 4" x 3" x 3" (approx.)
- Country/Region of Manufacture:
- United States
- Seller Notes:
- Unit only — no enclosure or dial assembly included.
- Condition Notes:
- This General Radio Type 200B Variac has been inspected and is in good used condition. Pulled from a working environment. Shows age-appropriate patina — tarnished brass, scuffed bakelite, oxidized wiper arm. Toroid winding intact.
$50.00Was: $100.00 -
Staco 3PN500B Adjust-A-Volt Variac 120V In 0-140V Out 1.05 KVA 7.5A Single Phase
Staco
$260.00Was: $525.00Staco 3PN500B Adjust-A-Volt Variac 120V In 0-140V Out 1.05 KVA 7.5A Single PhaseVariable autotransformer that accepts 120V AC input and outputs adjustable voltage from 0-140V AC. Manual rotary dial control allows stepped voltage adjustment for testing...47600- SKU:
- 47600
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 9.00 LBS
- Brand:
- Staco
- Model:
- 3PN500B
- MPN:
- 3PN500B
- Type:
- Variable Autotransformer (Variac)
- SKU:
- 47600
- Input Voltage:
- 120V AC
- Output Voltage:
- 0-140V AC (adjustable)
- Power Rating:
- 1.05 KVA
- Current Rating:
- 7.5A
- Phase:
- Single Phase
- Frequency:
- 50/60 Hz
- Form Factor:
- Benchtop
- Control Type:
- Manual rotary dial
- Power Switch:
- Toggle ON/OFF switch
- Indicator:
- Red pilot light
- Output Connector:
- Binding post terminals
- Input Connector:
- Standard 2-prong AC line cord
- Country/Region of Manufacture:
- United States (Dayton, Ohio)
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Unit only; no additional accessories included.
- Condition Notes:
- Used Staco 3PN500B Adjust-A-Volt variac showing cosmetic wear, paint loss, and surface rust on base. Dial, switch, binding posts, and cord present. Not powered or tested at our facility; pulled from a working lab environment.
$260.00Was: $525.00 -
Superior Electric Powerstat Type 20 Variable Transformer 115V 0-130V 3A Variac
Superior Electric
$120.00Was: $250.00Superior Electric Powerstat Type 20 Variable Transformer 115V 0-130V 3A VariacA single-phase variable autotransformer that accepts 115V AC input and provides continuously adjustable output from 0-130V AC at up to 3A. Manual rotary dial control allows...47613- SKU:
- 47613
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 4.00 LBS
- Brand:
- Superior Electric
- Model:
- Type 20
- MPN:
- Type 20
- Type:
- Variable Autotransformer (Variac)
- SKU:
- 47613
- Primary Voltage:
- 115V AC
- Secondary Voltage:
- 0-130V AC
- Output Current (Max):
- 3A
- Frequency:
- 60 Hz
- Phase:
- Single Phase
- Form Factor:
- Benchtop
- Control Type:
- Manual Rotary Dial
- Country/Region of Manufacture:
- United States
- Condition:
- Used – Pulled from Working Environment
- Seller Notes:
- Unit only; no additional accessories included.
- Condition Notes:
- Superior Electric Powerstat Type 20 variac in good used condition. Housing shows paint flaking and surface wear typical of age. Dial and scale intact. Not powered at our facility; pulled from working environment. Please contact us with questions.
$120.00Was: $250.00 -
Temp-Tendor 428-8171R1 Temperature Controller 0-1000°C w/ SE Variac Transformer
Temp-Tendor
$75.00Was: $150.00Temp-Tendor 428-8171R1 Temperature Controller 0-1000°C w/ SE Variac TransformerBenchtop temperature control unit with integrated SE Variac autotransformer. Measures temperatures from 0–1000°C using a thermocouple analog panel meter and outputs variable...48740- SKU:
- 48740
- Availability:
- Usually ships within 1-2 business days.
- Weight:
- 28.00 LBS
- Brand:
- Temp-Tendor
- Model:
- 428-8171R1
- MPN:
- 428-8171R1
- Secondary Model:
- 428-8171
- Type:
- Temperature Controller with Variac Autotransformer
- SKU:
- 48740
- Condition:
- As-Is / For Parts or Not Working
- Seller Notes:
- Sold as-is; includes SE Variac autotransformer assembly and thermocouple meter gauge
- Measurement Range:
- 0 – 1000°C (Centigrade)
- Meter Type:
- Thermocouple Analog Panel Meter
- Transformer Type:
- SE Variac Autotransformer, 0–100 VAC Output
- Output Voltage Range:
- 0 – 100 VAC
- Form Factor:
- Benchtop / Desktop Enclosure
- Front Panel Controls:
- Rotary variac dial (0–100), indicator lamp, toggle switch
- Included Components:
- SE Variac autotransformer, Temp-Tendor meter, control wiring harness, power cord
- Power Cord:
- Standard 2-prong AC power cord (included)
- Enclosure Material:
- Steel sheet metal, gray painted
- Manufacturer:
- Assembly Products Inc
- Condition Notes:
- Temp-Tendor 428-8171R1 temp controller w/ SE Variac sold as-is for parts or repair. Unit is disassembled; power cord shows wear. Not tested, not functional guarantee. Good source of parts.
$75.00Was: $150.00 -
RJD Controls Model 3 Variac Voltage Timer Control 115VAC DC Ammeter Benchtop
RJD Controls
$75.00Was: $150.00RJD Controls Model 3 Variac Voltage Timer Control 115VAC DC Ammeter BenchtopBenchtop variac control unit with integrated Time Ranger timer module. Provides variable AC voltage output with integrated DC ammeter for monitoring current draw during testing...26686- SKU:
- 26686
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 7.00 LBS
- Brand:
- RJD Controls
- Model:
- Model 3
- MPN:
- Model 3
- Type:
- Variac Voltage & Timer Control
- SKU:
- 26686
- Condition:
- As-Is / For Parts or Not Working
- Seller Notes:
- Sold as-is for parts or repair; includes Time Ranger timer module
- Form Factor:
- Benchtop
- Power Requirements:
- 115VAC
- Input Voltage:
- 115VAC
- Output Connector:
- DB9 (9-pin D-sub)
- Current Meter Range:
- 0–5 DC Amperes
- Controls:
- Voltage knob, Coil switch, Power switch, Push-to-start
- Timer Module:
- Time Ranger (integrated)
- Indicators:
- Power LED (green), Current meter
- Country/Region of Manufacture:
- United States
- Condition Notes:
- RJD Controls Model 3 Variac Voltage Timer Control sold AS-IS for parts or repair. Not tested or guaranteed functional. Cosmetically intact with normal wear. All visible components present. Contact us with questions.
$75.00Was: $150.00 -
General Radio Variac Type 10B M2 Variable Transformer Test Board TFX-5297
Powerstat
$200.00Was: $400.00General Radio Variac Type 10B M2 Variable Transformer Test Board TFX-5297Variable autotransformer test fixture designed for bench-level power distribution and circuit testing. Provides 0–132V AC variable output from 120V AC single-phase input, with...36423- SKU:
- 36423
- Availability:
- Usually ships within 1–2 business days.
- Weight:
- 28.00 LBS
- Brand:
- General Radio Company
- Model:
- Type 10B
- Secondary Model:
- Type M2
- MPN:
- TFX-5297
- SKU:
- 36423
- Type:
- Variable Autotransformer (Variac) in Test Enclosure
- Output Voltage:
- 0–132V AC (variable)
- Input Voltage:
- 120V AC
- Phase:
- Single Phase
- Variac Series:
- Powerstat / Variac Type M2
- Enclosure / Assembly:
- TFX-5297 Board-Level Test Fixture
- Front Panel Features:
- AC Input Vari-Set knob, Phase-Select (A/B/C/None), AC Meter, Metering switch (Vari/Fixed)
- Additional Controls:
- Current XFMR Vari-Set knob, PWM SD, Contactor, Gen Warn, OV1/OV2/UV Fault indicators
- Test Points:
- SIG GEN IN, GRD, 12VDC N, Neutral, A, B, C banana jacks; PWM OUT, POS 26V IN
- Connector Included:
- Burdy UPC2B25P-4 / M55302/4-03 connector (M8833)
- Calibration:
- Labeled CALIBRATION NOT REQUIRED
- Labels:
- FINAL TEST / BOARD LEVEL panel labels
- Country/Region of Manufacture:
- United States
- Form Factor:
- Benchtop / Freestanding Enclosure
- Seller Notes:
- Includes wiring harness and Burny connector; sold as pictured with all visible hardware
- Condition Notes:
- General Radio Variac Type 10B (M2) in TFX-5297 test enclosure. Inspected, pulled from a working environment where it was in active use. Shows surface wear and paint chips on enclosure. Panel components appear complete.
$200.00Was: $400.00