Relay Overview

Relay is an electrical switch device that controls one circuit by using electromagnetic induction to open or close another circuit. They are widely used in various application fields, including power systems, automation, automotive, and electronic devices, providing electrical isolation and reliable switching functions, enhancing circuit safety and flexibility.

Our solution is designed specifically to address a variety of issues related to circuit control, protection, and automation, and it is applicable to a wide range of industries and application areas.

Certification
  • ISO14001
  • ISO9001
  • TUV
  • VDE
  • UL
  • CE
  • CQC
  • Product Features
    • Complete Product Specifications
    • Long Lifespan Stable Performance
    • Small Size, High Current
    • Nergy Conservation & Environmental Protection
    Types of Relays
    in Meishuo
    Meishuo, as a high-quality global relay supplier, offers a wide range of products, continuously innovates, and uses increasingly smaller relays to control larger currents, meeting market demands.
    What are Meishuo Relays used for?
    MEISHUO offers a variety of relays to meet different application requirements. Ranging from 1A to 200A, MEISHUO's relays are commonly used in the following industries.
    • Household Appliances
      Relays are used to control and coordinate functions like circuit control, temperature control, and motor control in household appliances, ensuring the reliability and performance of the devices.
    • Smart Home
    • New Energy
    • Smart Grid
    • Automotive Industry
    • Communications IOT
    Relay Components
    Relays control circuit switches when the electromagnetic coil is activated and are used in various applications. Their design and function depend on the specific application requirements.inquiry
    17+Years Experienced Relays Manufacturers
    We are committed to becoming the preferred supplier for electrical equipment customers.
    • Quality Control
      We subject each product to three manual inspection processes to ensure a PPM3 or lower.
    • Customization Service
      We have engineers and a technical team with years of manufacturing and design experience to ensure our products meet your application standards & requirements.
    • Cost Efficiency
      We have 45 fully automated production lines and continuously optimized manufacturing processes to reduce costs, making our products more competitive.
    • After-Sales Service
      We are committed to becoming the preferred supplier for electrical equipment customers.
    FAQ
    Meishuo professional technical team for you to answer more product questions
    • About the cleaning of the relays?
      Use only alcohol-based solvents (e.g., isopropyl alcohol). Avoid chlorine-based, strong acid/alkaline, or ultrasonic cleaners, as they can damage relay materials, contacts, or internal seals. Always follow the specific cleaning instructions in the product datasheet.
    • When selecting a relay, can the voltage and current of the load be simply converted by switching power?
      No. While power (Watts = Volts x Amps) is conserved, relay contact ratings are separately specified for voltage and current due to:·Arc suppression capability (voltage dependent).·Contact erosion resistance (current dependent).A contact rated for 10A/250VAC cannot safely handle 25A/100VAC, even though the power is similar. Always select based on the actual load voltage and current.
    • Are general purpose relays suitable for loads up to 200mA? Why?
      Yes, generally suitable. Most general-purpose relays have a minimum recommended load well below 200mA (often 10-100mA depending on voltage). A 200mA load typically provides sufficient current to ensure reliable contact cleaning action ("wetting current") and overcome surface film resistance, making them a good fit.
    • Will a molded relay have higher electrical durability than a non-molded one? Why?
      Yes, typically. Molded relays (encapsulated in resin) offer:Superior arc containment: The resin traps and extinguishes arcs generated during switching, minimizing contact erosion.Protection from contaminants: Sealing prevents dust, moisture, and corrosive gases from degrading contacts.Enhanced heat dissipation: Some resins aid in managing heat from switching/coil.This leads to significantly higher electrical endurance (number of operations under load) compared to non-molded (open or covered) relays.