Description
General Radio Type 200B Variac Adjustable Transformer 115V 170VA 0-185V Out
Single-phase variable autotransformer for laboratory and industrial use. Provides continuously adjustable AC output from 0 to 185V when supplied with 115V input, enabling voltage regulation and testing applications.
Specifications & What's Included
- Brand: General Radio; Model: Type 200B
- Primary: 115V AC; Output: 0–185V AC adjustable
- Power rating: 170 VA; Rated current: 1A (max 1.5A)
- Single-phase, benchtop open-frame construction
- Dimensions: 4" × 3" × 3" (approx.)
- Unit only — no enclosure or dial assembly included
Applications
Variacs are used for voltage regulation, equipment testing, power supply design, and controlled power delivery in laboratory and manufacturing environments. The Type 200B serves low-power AC circuits requiring adjustable output voltage. Commonly found in vintage test benches, telecommunications equipment servicing, and educational labs. Compatible with standard 115V AC mains supply.
Condition: Used
This General Radio Type 200B Variac adjustable transformer has been inspected and appears to be in good used condition. It was pulled from a working environment where it was in use. The unit is complete and structurally sound. Photos show the original VARIAC label is intact and legible, though the body shows age-appropriate patina throughout — the brass collar has tarnished, the bakelite housing has surface scuffs, and the wiper arm on the toroid shows oxidation and surface discoloration consistent with age. The toroidal winding itself appears intact with no visible damage. This is an early production unit, likely dating from the 1940s–1950s, and shows cosmetic wear in keeping with its age. Please view our photo set and contact us if you have any questions.
This General Radio Type 200B Variac adjustable transformer has been inspected and appears to be in good used condition. It was pulled from a working environment where it was in use. The unit is complete and structurally sound. Photos show the original VARIAC label is intact and legible, though the body shows age-appropriate patina throughout — the brass collar has tarnished, the bakelite housing has surface scuffs, and the wiper arm on the toroid shows oxidation and surface discoloration consistent with age. The toroidal winding itself appears intact with no visible damage. This is an early production unit, likely dating from the 1940s–1950s, and shows cosmetic wear in keeping with its age. Please view our photo set and contact us if you have any questions.
Warranty Information
We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information
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. |
