High voltage relay
RH1 Series
RH1 series high voltage relays are rated for systems up to 3.5 kV and designed to continuously carry 25 amps in an ultra-compact capsule style form factor. Molybdenum/copper contacts provide low stable contact resistance allowing for low loss in RF circuits. The Single Pole Double Throw (SPDT) configuration provides design flexibility by incorporating both Normally Open (NO) and Normally Closed (NC) contact sets within a single relay. Continuity transfers between the contact sets when the coil is powered on or off.
Key specifications
RH1 Series at a glance
- Voltage
- 3.5 kV
- Current
- 25 A
- Contact form
- SPDT
- Dielectric
- Vacuum
| Voltage rating | 3.5 kV |
|---|---|
| Current rating (continuous, DC or 60 Hz) | 25 A |
| Contact arrangement | SPDT |
| Contact form | C = Single Pole Double Throw |
| Operation | Carry Only |
| Coil voltage | 12 or 26.5 VDC |
| Construction | Capsule |
| Dielectric | Vacuum |
| Contact material | Molybdenum/Copper |
| HV termination | Solder Pot |
| Coil termination | Turret Terminals |
| Mounting | Through Panel |
Datasheet
Full ratings, dimensions and drawings are in the RH1 Series datasheet (PDF).
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Datasheet specifications
RH1 Series performance
| Contact Arrangement | Form C, SPDT |
|---|---|
| Max Operating Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 3.5 kV dc or 60 Hz; 2.5 kV dc at 2.5 MHz; 2.0 kV dc at 16 MHz; 1.5 kV dc at 32 MHz |
| Max Test Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 5.0 kV dc or 60 Hz |
| Continuous Current, Max dc or 60 Hz | 25 A |
| Continuous Current, Max 2.5 MHz | 14 A |
| Continuous Current, Max 16 MHz | 9 A |
| Continuous Current, Max 32 MHz | 7 A |
| Capacitance – Across Open Contacts | 2.0 pF |
| Capacitance – Contacts to Ground | 2.5 pF |
| Load Switching | No Load Switching |
| Coil Hi-Pot (V RMS, 60 Hz) | 500 V |
| Contact Resistance (Max) | 0.01 ohm @ 1 A |
| Operate Time (Max, incl bounce) | 6 ms |
| Release Time (Max) | 6 ms |
| Shock, Operating, 1/2 Sine, 11 ms | 50 G |
| Vibration, Operating, Sine (55-2,000 Hz) | 10 G |
| Operating Temperature | -55°C to 125°C |
| Mechanical life | 2,000,000 cycles |
| Weight | 28 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 | 80 Ω | 335 Ω |
From the RH1 datasheet. The datasheet notes on coil temperature effects apply. Download the datasheet.
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Applications
Where the RH1 Series is used
High Voltage Test Equipment
HV switching for test stands, labs, hipot systems, and simulation equipment.
Medical Devices and Therapy Systems
High voltage switching for medical diagnostic, therapy, and specialty equipment.
RF Switching and RF Test Equipment
Low-loss switching for RF generators, RF test equipment, and tuning networks.
Scientific and Analytical Instrumentation
HV switching for scientific instruments, measurement systems, and laboratory setups.
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Questions about the RH1 Series?
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