1000 pf, 3 KV Peak, Jennings UCSL-1000-3D345


Capacitance 7-1000 pf
Voltage Rating 3 KV
Current Rating 75 Amps RMS

27.50 VDC motor drive

The capacitor is a Glass, VARIABLE capacitance, vacuum capacitor. 7-1000 pf capacitance rated at 3 KV peak voltage. These units are removed from equipment, checked, and guaranteed.

3 in stock

Jennings UCSL-1000-3D345 glass, vacuum, variable capacitor

Rated Capacitance 7-1000 pf
Peak Voltage 3 KV
Current Amps (RMS) Maximum 75 Amps
Shaft Diameter N/A
Turns for Full Travel Max N/A
Drive Information
Motor Voltage 27.50 VDC
Motor Current 0.60 Amps
Motor Speed 1/100 HP at 15,000 RPM min.
Important Dimensions
Max Length 5.00 in / 127.00 mm (Capacitor only)
Max Diameter 2.98 in / 75.69 mm (Capacitor only)
Base width 7.75 in / 196.85 mm
Base Depth 3.00 in / 76.20 mm
Weight 53.00 oz. / 1502.52 g
Cap is mounted and motor driven. The drive has several drilled and tapped holes for mounting. The butt-end of the capacitor requires a compression ring or a Jennings FM1C Flange. (Available at additional cost) See our flange page: Vacuum Capacitor Flanges
Condition Removed from equipment, checked and guaranteed
Manufacturer’s Data Sheet Jennings UCSL-1000-3D345
(Other variations of this capacitor are sometimes available, inquire)


“Out of spec” and “budget” capacitors:  If you want the quality and performance of vacuum capacitors, but the budget just won’t allow it, (or if you are just looking to save some money) we frequently have “out of spec” capacitors. These capacitors do not meet the specifications for the particular model. This can happen because of many reasons, but they are still perfectly usable in other capacitance ranges or maximum voltages. For instance, we might have a type that is listed at 15 kv, but tests good to 12 kv.  In this case, we will not sell it to a user who needs 15 kv ratings, but if you need only 5 kv, 7.5 kv, or 10 kv, this capacitor would do nicely.  If you want us to check our “out of spec” shelves for current stock, just tell us your capacitance range and voltage requirements (and current rating if you know it… or approximate power level) and we will let you know what we have available at steep discounts!

“SCRATCH AND DENT” We also frequently have in stock many vacuum capacitors which have cosmetic blemishes such as dents, which would not meet our high standards for regular sale, but which still check good, both in range, and in their ability to withstand voltage.

Some dents will damage or totally destroy a capacitor. Others, if they occur in just the right places, cause no harm at all. We have the knowledge and test capability to make these determinations, and if they pass our stringent testing, sell these units at discounted prices with our regular guarantee! If interested in these units, please inquire as to current availability.

If you don’t see what you wanted: These pages show only a fraction of the stock we have available. We have many thousands of vacuum capacitors, both fixed and variable, as well as vacuum relays. This stock changes daily. If you have requirements for items not listed in these product lines, please Email, and our knowledgeable staff will search our inventory. (Don’t forget to give us your email address and contact information!)

Additional information

Shipping Weight 53.00 oz
Shipping Dimensions 9.00 × 9.00 × 13.75 in


Min Capacitance

Max Capacitance


3 KV

Current Rating

75 Amps



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