1. Installation Direction: Installing the relay in the same direction as its shock-resistant orientation will maximize its performance. It is recommended that the impact direction be perpendicular to the movement direction of the contacts and armature. This will effectively improve the vibration and shock resistance of normally closed contacts in the un-energized state. During installation, ensure the relay contact axis is parallel to the ground to prevent contact spatter and carbon deposits from falling onto the contact surface, improving contact reliability. For multiple relays, avoid placing the small-load contacts below the large-load contacts.
2. Close-Range Installation: Installing multiple relays close together can cause abnormal heating. A 2mm spacing is generally recommended. Close-range installation of polarized or magnetically latched relays will affect the operating voltage.
3. Relay Installation with Housing: Do not remove the housing before installation. To prevent loosening, damage, or deformation, use spring washers. Tightening torque should be within the range of 0.5–70 N·m.
4. Insertion Strength Recommended for Insertion-Type Relays: 40–70 N.
5. Products meeting the same load requirements may have different external dimensions. Depending on the allowable installation space, products with lower height or smaller installation area can be selected.
6. Automotive relays can be installed using PCB board mounting, ISO socket mounting, ISO 280 socket mounting, and housing-fixed or clip-on mounting methods. For small relays that are not frequently replaced, PCB board mounting is generally chosen; for relays that are frequently replaced, socket mounting is used. For relays with a main circuit current exceeding 20A, socket quick-connect type is generally chosen to prevent high current from passing through the circuit board and causing overheating and damage (except for short-term operating relays). For large relays, housing mounting can be used to prevent damage to the mounting feet under impact and vibration conditions.
