US 12,249,471 B1
Power contactor comprising a pyrotechnic actuator
Guillaume Prieur, Blagnac (FR); Cecil Beltan, Blagnac (FR); and Kévin Enouf, Blagnac (FR)
Assigned to SAFRAN ELECTRICAL & POWER, Blagnac (FR)
Appl. No. 18/726,247
Filed by SAFRAN ELECTRICAL & POWER, Blagnac (FR)
PCT Filed Jan. 2, 2023, PCT No. PCT/FR2023/050005
§ 371(c)(1), (2) Date Jul. 2, 2024,
PCT Pub. No. WO2023/135380, PCT Pub. Date Jul. 20, 2023.
Claims priority of application No. 2200226 (FR), filed on Jan. 12, 2022.
Int. Cl. H01H 39/00 (2006.01); H01H 3/26 (2006.01)
CPC H01H 39/00 (2013.01) [H01H 3/26 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A power contactor comprising:
a fixed part;
a movable part able to come into contact with the fixed part and to move between an open position and a closed position of the contactor, the movable part comprising at least one power contact;
an auxiliary contact and a pyrotechnic actuator, the auxiliary contact being in series with the pyrotechnic actuator, the auxiliary contact and the pyrotechnic actuator being placed in parallel with the power contact, and the pyrotechnic actuator being configured to be triggered during a levitation of the contactor in such a way as to move the contactor into the open position, and
a motor configured to actuate the movable part and to put it in contact with the fixed part,
characterized in that the power contact and the auxiliary contact are desynchronized in such a way that during the closure of the contactor, the power contact comes into contact with the fixed part before the auxiliary contact and during the opening of the contactor, the auxiliary contact opens before the power contact.