Lockable 20A/250V-400V AC device coupler Linear, uncharged and pre-grounded three contacts Power input (blue) and power output (white) have different lock keys to avoid short circuits Fast and convenient rotation locking system Ergonomic design Quick lock Pure copper pin for connection, silver plated Electrical parameters: Dielectric strength (external): 4 / 2.8 Kvac Insulation resistance: more than 0.1G ohm Electronic contact: 4P + E Rated current: 20A Rated voltage: 250V-400V Mechanical parameters: Cable diameter: 5-12 (mm) Service life: more than 1000 (based on the number of connections) Product advantages: Its locking system is the standard non-locking MAIN connector Colour: black + yellow Material: copper + ABS Package Contents: 5 x male plug 5 x female jack Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.