Contact load
When determining whether the load that the relay can bear meets the use requirements, in addition to determining the size of the load, it is also necessary to determine the type of the actual load, because different loads have different steady-state values and impact values, as shown in the table below. Unless otherwise stated, the load given in the general instructions is resistive.
Type | Impulse current |
Resistive load | 1 time of steady state current |
Motor load | 5-10 times of steady-state current |
Capacitive load | 20-40 times of steady-state current |
Transformer load | 5-15 times of steady-state current |
Solenoid load | 10-20 times of steady-state current |
Incandescent lamp load | 10-15 times of steady-state current |
Mercury lamp load | About 3 times of steady state current |
Sodium lamp load | 1-3 times of steady state current |