Installation method of automotive relay

1. Installation direction If the installation direction is consistent with the impact resistance direction of the relay, the performance of the relay can be fully utilized. It is recommended to make the impact direction perpendicular to the movement direction of the contact and armature, which can effectively improve the vibration and impact resistance of the normally closed contact in the non-excitation state. When installing, make the contact axis of the relay parallel to the ground to avoid contact spatter and carbonized matter falling on the contact surface and improve contact reliability. Multiple groups of relays should avoid small load contacts being located below large load contacts.
2. Installation at close range When multiple relays are installed at close range, abnormal heating will occur. A spacing of 2mm is generally recommended. Polarity or magnetic latching relays installed in close proximity will affect the operating voltage.
3. When installing the relay in the casing, do not remove the casing before installing it. To prevent loosening, damage, and deformation, please use spring washers. The tightening torque should be within the range of 0.5~70N·m.
4. The insertion strength of plug-in relays is recommended to be 40~70N.
5. Products that meet the same load requirements have different dimensions. According to the allowed installation space, products with low height or small installation area can be selected.
6. The installation methods of automotive relays include PCB board type, ISO socket installation type, ISO 280 socket installation type and shell fixed and card installation methods. For relays that are small in size and not frequently replaced, PCB board type is generally used, and for relays that are frequently replaced, socket installation is used. For relays whose main circuit current exceeds 20A, the socket quick connection type is generally used to prevent large currents from passing through the circuit board and causing thermal damage to the circuit board (except for short-term working relays). For large relays, the shell-mounted type can be selected to prevent damage to the mounting feet under impact and vibration conditions.