High voltage relay
R64A Series
The R64A series high voltage relay is designed for make-only load switching applications, commonly used in capacitive discharge scenarios such as electrostatic discharge (ESD) and lightning strike protection. Featuring a Single Pole Single Throw, Normally Open (SPST-NO) configuration, this relay ensures reliable operation with a 10 A continuous carry rating, making it ideal for demanding high-voltage systems up to 50 kV. Backfilled with inert gas to provide optimal insulation and arc suppression, the R64A series offers superior performance in critical applications requiring precise, fast switching. Its robust design ensures longevity and reliability, even in harsh conditions. For applications needing efficient isolation and load switching in high voltage environments, the R64A delivers unmatched reliability and performance.
Key specifications
R64A Series at a glance
- Voltage
- 50 kV
- Current
- 10 A
- Contact form
- SPST-NO
- Dielectric
- Inert Gas
| Voltage rating | 50 kV |
|---|---|
| Current rating (continuous, DC or 60 Hz) | 10 A |
| Contact arrangement | SPST-NO |
| Contact form | A = Normally Open |
| Operation | Make Only |
| Coil voltage | 12 or 26.5 VDC |
| Construction | Bottle |
| Dielectric | Inert Gas |
| Contact material | Molybdenum/Tungsten |
| HV termination | Flying Leads |
| Coil termination | Turret Terminals |
| Mounting | Through Panel |
Datasheet
Full ratings, dimensions and drawings are in the R64A Series datasheet (PDF).
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Datasheet specifications
R64A Series performance
| Contact Form | A |
|---|---|
| Contact Arrangement | SPST-NO |
| Max Operating Voltage (Peak, between Contacts and Contacts to Base) kV dc or 60 Hz (Max Leakage Current: 15µA) | 50 kV Peak |
| Test Voltage (Peak, between Contacts and Contacts to Base) kV dc or 60 Hz (Max Leakage Current: 15µA) | 55 kV Peak |
| Continuous Current DC or 60 Hz | 10 Amps |
| Load Switching (Make and Break) | (Consult Factory) |
| Coil Hi-Pot (V RMS, 60 Hz) | 500 V |
| Contact Resistance (Max) @ 1 A | 1.0 Ω |
| Operate Time (Max, incl bounce) | 15 ms |
| Release Time (Max) | 15 ms |
| Shock - Operating, 1/2 Sine, 11 ms | 10 G’s |
| Vibration (55-500 Hz Peak) | 10 G’s |
| Operating Temperature | -55 to 85 °C |
| Mechanical life | 1,000,000 Cycles |
| Weight | 336 g |
| Coil (25 °C) | 12.0 VDC | 26.5 VDC |
|---|---|---|
| Nominal Voltage | 12.0 VDC | 26.5 VDC |
| Pick-up Voltage, Max | 9 VDC | 18 VDC |
| Drop-out Voltage | 0.5-5 VDC | 1-10 VDC |
| Coil Resistance (±10%) | 18 Ω | 75 Ω |
From the R64A datasheet. The datasheet notes on coil temperature effects apply. Download the datasheet.
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Applications
Where the R64A Series is used
Capacitive Discharge Circuits
Relays and switching for capacitive discharge and controlled energy dump circuits.
Defibrillator and Pulse Power Development
Switching for defibrillator development, pulsed power, and energy delivery test platforms.
ESD Protection and Controlled Discharge
Switching for ESD protection systems requiring controlled discharge paths.
High Power Test Systems and Load Banks
Switching and protection for load banks, dynos, and high-power test setups.
High Voltage Test Equipment
HV switching for test stands, labs, hipot systems, and simulation equipment.
Lightning and Surge Simulation
Switching for lightning strike and surge simulation and transient testing equipment.
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.
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Questions about the R64A Series?
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