Frequently Asked Questions
Q&a about MG relay products
What's the difference between the LED and the mechanical flag indicator? Isn't one enough?
The LED lights up when there's electrical power, and the mechanical flag moves only when the relay actually operates. Using both together helps quickly tell if the problem is a lack of power or a stuck relay.
Why is "blow-out magnet" technology specifically emphasized for high-power relays?
It uses a magnetic field to stretch and extinguish the powerful spark (arc) created when breaking a high DC current, preventing the contacts from welding together and significantly extending relay life.
How do I choose between AgNi (Silver Nickel) and AgSnO2 (Silver Tin Oxide) contact materials?
Use AgNi for general resistive loads (like heaters). Choose AgSnO2 for inductive loads (like motors, coils) that cause arcing, as it's much more resistant to welding and wear.
Q: Can I directly replace an Omron or Schneider relay with an MG relay?
Yes, the pin layout follows the same international standard for direct replacement, but you should verify the coil voltage and mounting dimensions match
Is the Push-in base really better than traditional screw terminals?
Yes, it's more reliable against vibration-induced loosening and can reduce installation time by about 60%.
The new ultra-slim relay is only 6.2mm wide. Can I use it to replace a bulkier relay?
For low-current signal switching, yes. For high-current loads (above 10A), the larger physical size of standard relays is necessary for proper arc extinction and heat dissipation.
Since Solid-State Relays (SSRs) last longer and are faster, why should I still buy electromechanical relays?
Electromechanical relays offer two key advantages: true physical isolation (zero leakage current when off) for safety, and superior surge withstand capability, making them more robust for harsh industrial power environments.
How can I justify the higher cost of MG relays to my finance department using your "cost of failure" theory?
While a relay itself costs very little, a single failure can cause hours of production line downtime, resulting in losses that far exceed the relay's price. Investing in high-reliability relays buys "guaranteed uptime."
How does your product perform in extreme temperatures, like -40°C cold or 70°C heat?
MG relays are designed for a wide operating temperature range, typically from -40°C to +70°C, ensuring reliable operation in harsh environments.
What international certifications do your relays have? My equipment needs to be exported to Europe and North America.
MG relays carry comprehensive global approvals including UL (North America), CE, TUV, VDE (Europe), and comply with RoHS 2.0 & REACH environmental standards, ensuring smooth export for your end equipment.