The SY21 Plastic Circular Connector are IP67 connectors, bayonet coupling, they have the same size and same electric spec as SP13/17/21, but IP67, SY21 is our large-size plastic shell, IP67 waterproof connector, the specialty of SY21 connector is bayonet coupling, it is designed for applications that need quick locking and frequent plug on/off mating.
1) Shell diameter (the panel hole cutout diameter): 21mm
2) Number of contacts: 2 -12 gold plated contacts
3) Rated current and V: 30A-5A, 500V-400V.
4) Cable outer diameter acceptance: type I: 4.5-7mm, type II: 7-12mm
5) CE, ROHS approval
Material and spec
Coupling | Bayonet |
Shell material | PC: Panel connector shell, Insert housing shell. Nylon66: Locking nut, Back shell, Compressing nut, Retaining nut Fire resistance: V-0 |
Insert material | PPS, max temperature 260 ℃ |
Contact material | Brass with gold plating |
Termination | Solder: SY13, SY17, SY21 Crimp: SY17, SY21 Screw: SY21 (Ø3 mm contact) |
IP rating | IP67 |
Mating cycle | 500 |
Temperature range | -40℃~+ 85℃ |
Insulation resistance (MΩ) | 2000 |
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