P series circular connectors are used extensively in line connections between electrical equipment,various instruments and meters.These connectors have the features of small volume,light weight,convenient application,high durability of plugging and unplugging,threaded coupling,good sealing performance,high conductivity and high dielectric strength.They are made according to the standard SJ/T10496.They are for military and industrial  applications.P20K1U-J1A: high ovltage connector specially.
Product Ordering
               P  20    J   1   A
               1   2    3   4   5
1. Name of series:  P series circular connectors
2. shell size:       20
3. Type of contacts:J:Pin,K:Socket
4. Sign of contacts: TYPE 1 mean 4 pins connectors.
5. Type:without mark:plug,A:normal  receptacle,M:sealed receptacle.Q:Plug with shell.