duck - bill - type contact
The duck - bill - type contact is a kind of contact electrical cut - off device, which consists of two parts: the contact and the duck - bill. The contact is a kind of contact electrode, which is responsible for connecting with the circuit; the duck - bill is a movable mechanism, which can control the position and contact force of the contact.
When the circuit is powered on, the current will flow into the electrical appliance through the contact. At this time, the duck - bill will automatically close, reducing the distance between the contact and the electrical appliance to the minimum, thus ensuring the smooth flow of the circuit. When power - off is required, the duck - bill will open, increasing the distance between the contact and the electrical appliance, thus cutting off the circuit and achieving safe power - off.