Description
HGMR05-1A004
5V Mercury Wetted Reed Relay 1 Form A
The HGMR05-1A004 is a mercury wetted reed relay from SHR’s HGMR series, driven by a 5VDC coil with 1 Form A (SPST-NO) contacts. Mercury wetted contacts deliver bounce-free switching with stable low contact resistance over life, making it suitable for high-reliability switching in industrial automation, test equipment and instrumentation.
Key Specifications
| Nominal coil voltage | 5 VDC |
| Max operating voltage | 7.0 VDC |
| Max pull-in voltage | 4.0 VDC max |
| Min drop-out voltage | 0.5 VDC min |
| Coil resistance | 70 Ω ±10% at 20°C |
| Max contact rating (series) | 50 W |
| Max switching voltage (series) | 1000 V (at 1mA) |
| Max switching current (series) | 1.0 A (2.6 A at 60°C) |
| Max carrying current (series) | 5.2 A (at 30°C) / 3.0 A |
| Max contact resistance (series) | 80 mΩ |
| Dielectric strength (series) | 2000 V (static) |
| Insulation resistance (series) | 1010–1012 Ω |
| Operate time (series) | 2.0 ms |
| Reset time (series) | 2.0 ms |
| Operating temperature (series) | -20 to +70°C |
| Storage temperature (series) | -35 to +105°C |
| Life expectancy (series) | 5×107 ops (at 500VDC-100mA) |
Key Highlights
- High power mercury reed relay with dielectric strength up to 2000VDC
- High carry current
- High insulation resistance, up to 1012Ω
- Low contact resistance, excellent lifetime characteristics
- External magnetic and electrostatic shield
- Custom design, conforming to RoHS directive
Applications
- Industrial automation
- Test and measurement equipment
- High-reliability switching systems
- Instrumentation
Specifications per the HGMR series datasheet; series-level values are marked (series). Refer to the datasheet or submit an RFQ for ordering options.







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