8 kV, 10 kV Peak, SPDT, 15 Amps, Kilovac HC-4 Vacuum Relay


with epoxy / plastic encapsulation vacuum relay with SPDT contacts (Make & Break Load Switching)

(Other manufacturers make other variations of this relay and are sometimes available, inquire)
Jennings RJ1AKilovac HC-1Gigavac GH-1
Operating Voltage8 kV
Peak Voltage10 kV
Current Carry Amps (RMS)15 Amps @ 60 Hz
Contact Close Speed6 MS (Milliseconds)
Contact Release Speed6 MS (Milliseconds)
Rated Life Operations2,000,000
Important Dimensions
Max Length2.05 in / 52.07 mm
Max Diameter1.00 in / 25.40 mm
Weight1.40 oz / 39.69 g
MountingThreaded base with mounting nut included.
ConditionBrand New, unused. Guaranteed good.
Manufacturer’s Data SheetClick Here!

Spec Sheet

About Max-Gain Systems, Inc.

Max-Gain Systems, Inc. carries a full line of in-series, between series, right angle, T-shaped, quick connect, handie-talkie (BLACK), pigtails (coaxial jumpers), etc… RF adapters. Our RF adapter lines are constantly expanding. We keep our RF connector and adapter lines in stock. We ship both retail and wholesale quantities. To become a dealer / wholesale user, contact us with your potential usage.

Max-Gain Systems, Inc. is the number one supplier of fiberglass round hollow tube, square tube and round solid rod to the antenna manufacturing industry. We produce millions of feet a year for hundreds of different industries including but not limited to: marine / boating, aeronautical, agriculture, construction, emergency services, etc…. We have the unique ability to sell one piece or even a semi-truck full. Feel free to prototype using our fiberglass tube and rod then contact us for a quote on a production run. At production run quantities we can cut to your desired lengths at no additional charge, and we can also perform several different fabrications (example: drilling holes in precise locations along a tube) to ensure your delivered material is ready for assembly. We have several accessory items designed for our fiberglass including but not limited to: couplers, telescoping clamps, ferrules, etc…

Additional information

Shipping Weight1.40 oz
Shipping Dimensions2.05 × 1.00 × 1.00 in
Coil Voltage

12 VDC, 26.5 VDC

Contact Set Body Type


Contact Set Configuration

Current Rating

15 Amps


8 KV

Peak Voltage

10 kV




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