High voltage relay
R12 Series
The R12 series high voltage relay is designed for make and break load switching applications, providing reliable performance for systems up to 8 kV. With an 8 A continuous carry rating, this Form C Double Pole Double Throw (DPDT) relay ensures efficient and precise switching, making it ideal for high voltage circuits requiring both isolation and control. Constructed with vacuum-sealed ceramic bottle technology, the R12 features ultra-low contact resistance for enhanced performance. Its robust design is built to handle the most demanding environments, offering optimal dielectric strength and preventing contact arcing in make and break operations. For reliable, high-voltage switching in critical applications, the R12 series delivers superior performance and durability.
Key specifications
R12 Series at a glance
- Voltage
- 8 kV
- Current
- 8 A
- Contact form
- DPDT
- Dielectric
- Vacuum
| Voltage rating | 8 kV |
|---|---|
| Current rating (continuous, DC or 60 Hz) | 8 A |
| Contact arrangement | DPDT |
| Contact form | 2C = 2xSingle Pole Double Throw |
| Operation | Make/Break Load Switching - Limited |
| Coil voltage | 12 or 26.5 VDC |
| Construction | Bottle |
| Dielectric | Vacuum |
| Contact material | Molybdenum/Tungsten |
| HV termination | Solder Tab |
| Coil termination | Turret Terminals |
| Mounting | Through Panel |
Datasheet
Full ratings, dimensions and drawings are in the R12 Series datasheet (PDF).
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Options and part numbers from the R12 datasheet. Other combinations may be available as custom builds.
All standard R12 part numbers
Datasheet specifications
R12 Series performance
| Contact Arrangement | Form 2C, DPDT (Double Pole Double Throw) |
|---|---|
| Max Operating Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 8 kV dc or 60 Hz; 5 kV at 2.5 MHz; 3 kV at 16 MHz; 2 kV at 32 MHz |
| Test Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 8 kV dc or 60 Hz |
| Current Carry, Continuous, Max | 8 A dc or 60 Hz; 7 A at 2.5 MHz; 3 A at 16 MHz; 2 A at 32 MHz |
| Capacitance – Across Open Contacts | 0.5 pF |
| Capacitance – Contacts to Ground | 1.0 pF |
| Load Switching (Make and Break) | Limited - (Consult Factory) |
| Coil Hi-Pot (V RMS, 60 Hz) | 500 V |
| Contact Resistance (Max) | 0.020 Ω @ 1 A |
| Operate Time (Max, incl bounce) | 15 ms |
| Release Time (Max) | 9 ms |
| Shock - Operating, 1/2 Sine, 11 ms | 30 G |
| Vibration (55-500 Hz Peak) | 10 G |
| Operating Temperature | -55°C to 125°C |
| Mechanical life | 1,000,000 cycles |
| Weight | 71 g |
| Coil (25 °C) | 12 VDC | 26.5 VDC |
|---|---|---|
| Nominal Voltage | 12 VDC | 26.5 VDC |
| Pick-up Voltage, Max | 8 VDC | 16 VDC |
| Drop-out Voltage | 0.5-5 VDC | 1.0-10 VDC |
| Coil Resistance (±10%) | 60 Ω | 250 Ω |
From the R12 datasheet. The datasheet notes on coil temperature effects apply. Download the datasheet.
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Applications
Where the R12 Series is used
Defibrillator and Pulse Power Development
Switching for defibrillator development, pulsed power, and energy delivery test platforms.
High Power Test Systems and Load Banks
Switching and protection for load banks, dynos, and high-power test setups.
Medical Devices and Therapy Systems
High voltage switching for medical diagnostic, therapy, and specialty equipment.
Scientific and Analytical Instrumentation
HV switching for scientific instruments, measurement systems, and laboratory setups.
Questions about the R12 Series?
Talk to an application engineer about ratings, options or a custom build.