Specialized high-voltage routing
20kV-class relays are used when high stand-off capability is required in a compact test or measurement path.
20kV HV Reed Relay
20kV Reed Relays for Specialized HV Switching
20kV reed relay solutions are specialized components for high-voltage test benches, insulation systems and custom switching assemblies that require careful derating and application review.
20kV class isolationCustom HV switchingGuarded measurementApplication review required
What this component is used for
Custom assemblies
These relays are often engineered into complete HV fixtures with cables, shielding, enclosure spacing and safety interlocks.
Low-leakage design discipline
At very high voltage, surface contamination, humidity and mechanical spacing become critical design variables.
Application details
Hipot and dielectric withstand testing
Route test voltage to selected outputs in automated safety test equipment.
Cable, connector and insulation test
Switch between conductors, shields and guard paths in multi-point HV test fixtures.
Research and industrial labs
Support controlled high-voltage routing where manual cable changes would be slow or unsafe.
OEM equipment integration
Design into custom instruments after confirming load type, switching conditions and environmental requirements.
Representative 20 kV-class HVR models
At the 20 kV class, parts are selected per circuit rather than from a single universal rating; the following HVR models cover high stand-off switching and guarded measurement paths. Request the datasheet for the exact candidate and have the real load reviewed before design-in.
- HVR12-1A20-150-S — 12 VDC coil, single Form A, 20 kV grade, 150 terminal option — datasheet (PDF)
- HVR12-1A20-150 — same switching grade, standard terminal option — datasheet (PDF)
- HVR24-1A20-P00 — 24 VDC coil, single Form A, 20 kV grade, P00 package — datasheet (PDF)
Beyond hipot and cable test, this class is also specified for high-voltage power supplies, electrostatic precipitator electrode switching, telecom antenna-tuning and transmission paths, and high-energy-physics experimental rigs — applications where a sealed, low-leakage contact replaces manual high-voltage re-cabling. Browse HVR products
Selection factors engineers should confirm
- Confirm whether the application is cold-switching, hot-switching or stand-off only.
- Calculate stored energy in cables and capacitors before opening or closing contacts.
- Use proper HV connectors, wiring, enclosure spacing and interlocks.
- Confirm insulation resistance, leakage, life and environmental derating.
- Request engineering review before using near maximum ratings.
Engineering note: 20kV switching should be treated as a system design problem, not only a component selection. SHR AUTOSENSOR should review the real circuit and mechanical layout before recommendation.
Need help selecting a relay or contactor?
Send voltage, current, load type, coil voltage, package constraints and target application. SHR AUTOSENSOR can recommend a standard series or custom design path.