Classification of relays
Miniature relay: a relay with the longest side size not greater than 10mm
Subminiature relay: Relay with the longest dimension greater than 10mm, but not greater than 25mm
Miniature relay: Relay with the longest side larger than 25mm, but not larger than 50mm
Classification by contact load
Micro power relay: Relay less than 0.2A
Weak power relay: 0.2 ～ 2A relay
Medium power relay: 2 ～ 10A relay
High-power relay: relay above 10A
Classified by use
Communication relays (including high-frequency relays): The contact load range of this type of relays is from low to medium current, and the requirements for environmental use are not high.
Industrial control relay: The relay used in industrial control has large contact load power and long life.
Home appliance relays: Relays used in home appliances require good safety performance.
Automotive relays: Relays used in automobiles. This type of relay has a large switching load power and high impact and vibration resistance.