Optimizing Mining Applications with Reed Relay Technology
Mining environments place unique demands on switching technology. Higher voltages, harsh operating conditions, and the need for accurate monitoring all require relays that combine high isolation, low leakage, fast switching, and long-term reliability.
This application guide explains why reed relays are such a strong fit for mining equipment — from power distribution units, load centers and switchgear through to sensor-based monitoring, condition monitoring, and underground safety systems.
As mining operations become more electrified, switching and monitoring circuits are being asked to do more than ever before. Equipment is moving to higher voltages to reduce power losses, while safety systems and predictive maintenance platforms rely on precise, repeatable signal switching.
That creates a challenge: the relay must handle demanding power environments without compromising measurement accuracy or system reliability.
Reed relays offer a compelling solution because they are:
- Hermetically sealed, keeping dust and moisture away from the contacts
- Capable of high switching and stand-off voltages
- Extremely low leakage, supporting accurate sensing and monitoring
- Galvanically isolated, helping protect control electronics
- Fast, compact, and able to deliver millions or even billions of operations
Ready to find out more?
Download the full guide now to learn more about utilizing reed relays in mining applications.
Example applications covered in the guide:
- Power distribution units (PDUs)
- Underground load centers and switchgear
- Electric drills and rock-cutting equipment
- Conveyor, pumping and ventilation systems
- Battery charging stations for mining vehicles
- Ore sorting and condition monitoring systems
- Gas, smoke, strain, roof bolt, and geotechnical monitoring
Recommended Reed Relays for use in Mining Applications
Mining applications where reed relays are required vary widely, from switching high voltages to incredibly low EMF in sensing and measurement equipment. Please browse the below relay types to find the ideal relay for your application, or reach out to our expert team today to help choose a relay, or even create a custom design.

Ultra High Density Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Fast operate and release times (as low as 80μs or less) make these relays suitable for high-speed test systems. Body dimensions from (W x H x D): 3.9 x 9.5 x 3.9mm. Available forms: 1 Form A contact configuration.

High Density Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Switches feature sputtered ruthenium contacts for long life and high reliability. Body dimensions from (W x H x D): 6.6 x 9.5 x 3.7mm. Available forms: 1 Form A, 1 Form A Coax, 2 Form A, 1 Form B, and 1 Form C contact configurations.

Miniature High-Voltage Reed Relays
These relays have switching voltages up to 1.5kV and standoff voltages up to 5kV. The maximum switch current is 1A (up to 25W) and the maximum carry current is 1.5A. High coil resistance options (up to 6.8kΩ). Thermal EMF devices are between 3 and 10μV. Relays can endure temperatures as high as 150°C if requested. Body dimensions from (W x H x D): 12.5 x 6.6 x 3.7mm. Available forms: 1 Form A, 2 Form A, and 1 Form B contact configurations.

High Voltage Reed Relays
These relays have switching voltages up to 12.5kV and minimum standoff voltages up to 20kV. The maximum switch current is 3A (up to 200W) and the maximum carry current is up to 5A. Option of PCB pins, chassis, PCB mounting, and flying leads. Body dimensions from (W x H x D): 58.4 x 19.0 x 12.6mm. Available forms: 1 Form A, 1 Form B, and 1 Form C contact configurations.

High Coil Resistance Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Featuring high coil resistances (up to 6kΩ), devices are ideal for portable instruments. Body dimensions from (W x H x D): 8.13 x 15.24 x 4.8mm. Available forms: 1 Form A, 2 Form A, 1 Form B, and 1 Form C contact configurations.

Low Thermal EMF Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Devices feature low thermal EMF (around 1μV or less) and low power consumption. Body dimensions from (W x H x D): 20.1 x 9.4 x 7.4mm. Available forms: 1 Form A, 2 Form A, 1 Form B, and 1 Form C contact configurations.

Industry Standard Size Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Featuring superb contact resistance stability and ultra-high insulation resistance. Body dimensions from (W x H x D): 19.1 x 7.6 x 4.8mm. Available forms: 1 Form A, 2 Form A, 1 Form B, 1 Form C, and 2 Form C contact configurations.

Low Capacitance Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Ultra-low capacitance levels of typically 0.1pf, compared to typically 2.5pF for a standard device. Body dimensions from (W x H x D): 19.1 x 8.1 x 4.8mm. Available forms: 1 Form A contact configuration.

Coaxial Reed Relays
These relays have a maximum switch current of 1A (up to 20W), and the maximum carry current is 1.2A. Devices with 50 and 75Ω coils are suitable for up to 5GHz, making them ideal for RF Signal Switching, RF switched tunable filters, and High-Speed Digital Switching. Available in thru-hole and SMT. Body dimensions from (W x H x D): 12.5 x 6.6 x 3.7mm. Available forms: 1 Form A and 1 Form B