Description
HGJR12-1AM
12V Mercury Wetted Reed Relay 1 Form A
The HGJR12-1AM is a mercury wetted reed relay from SHR’s HGJR series, driven by a 12VDC 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 | 12 VDC |
| Max operating voltage | 16 VDC |
| Max pull-in voltage | 9 VDC |
| Min drop-out voltage | 1 VDC |
| Coil resistance | 685 Ω ±10% at 20°C |
| Max contact rating (series) | 100 W |
| Max switching voltage (series) | 500 V (max DC/peak AC) |
| Max switching current (series) | 2.0 A |
| Max carrying current (series) | 5.0 A |
| Max contact resistance (series) | 80 mΩ max |
| Dielectric strength (series) | 4000 V min (static) |
| Insulation resistance (series) | 109 Ω min |
| Operate time (series) | 1.8 ms max |
| Reset time (series) | 1.8 ms max |
| 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 4000VDC
- High load current capability
- High insulation resistance
- Low contact resistance, long-life sealed contacts
- External magnetic and electrostatic shield
- RoHS compliant
Applications
- Industrial automation
- Test and measurement equipment
- High-reliability switching systems
- Instrumentation
Specifications per the HGJR series datasheet; series-level values are marked (series). Refer to the datasheet or submit an RFQ for ordering options.







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