JST B04B-XASK-1 (LF)(SN) Multi-pin Connector , XA Series Pins: 4 Nominal current (details): 3 A

Vibration-proof, lockable connector from wire to board. The catch bars on the housing and pin header make an audible click when plugged. A circular trough at the pin header ensures reverse voltage protection. Can be easily soldered thanks to pre-tinned pin header.

Price: 0.55 from Conrad Electronic