High voltage relay
RH5 Series
RH5 series high voltage relays are an enhanced version of the RH1, featuring the same ultra-compact capsule style form factor and 3.5 kV voltage rating but designed specifically for make-only applications. Rated for systems up to 3.5 kV, the RH5 can continuously carry 8 amps. 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
RH5 Series at a glance
- Voltage
- 3.5 kV
- Current
- 8 A
- Contact form
- SPDT
- Dielectric
- Inert Gas
| Voltage rating | 3.5 kV |
|---|---|
| Current rating (continuous, DC or 60 Hz) | 8 A |
| Contact arrangement | SPDT |
| Contact form | C = Single Pole Double Throw |
| Operation | Make Only |
| Coil voltage | 12 or 26.5 VDC |
| Construction | Capsule |
| Dielectric | Inert Gas |
| Contact material | Molybdenum/Tungsten |
| HV termination | Solder Pot |
| Coil termination | Turret Terminals |
| Mounting | Through Panel |
Datasheet
Full ratings, dimensions and drawings are in the RH5 Series datasheet (PDF).
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Options and part numbers from the RH5 datasheet. Other combinations may be available as custom builds.
All standard RH5 part numbers
Datasheet specifications
RH5 Series performance
| Contact Arrangement | Form C, SPDT |
|---|---|
| Contact Material | Molybdenum / Tungsten |
| Max Operating Voltage (Peak, between Contacts and Contacts to Base) (Max Leakage Current: 15µA) | 3.5 kV dc or 60 Hz |
| 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 | 8 A |
| Load Switching (Make and Break) | Consult Factory |
| Coil Hi-Pot (V RMS, 60 Hz) | 500 V |
| Contact Resistance (Max) | 0.50 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 RH5 datasheet. The datasheet notes on coil temperature effects apply. Download the datasheet.
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Applications
Where the RH5 Series is used
Capacitive Discharge Circuits
Relays and switching for capacitive discharge and controlled energy dump circuits.
ESD Protection and Controlled Discharge
Switching for ESD protection systems requiring controlled discharge paths.
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 RH5 Series?
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