Detailed Answer
Contact capacity refers to the maximum voltage/current a relay output can safely switch, e.g., 5A/250VAC, 10A/30VDC. The relay contact capacity of an industrial remote control receiver determines the loads it can directly drive: 5A/250VAC can directly control small contactor coils and solenoid valves. The LDER LD series contact capacity meets mainstream contactor drive requirements, and XINGJIA offers versions with different capacities. High-power loads (motor main circuits) must be controlled indirectly through contactors — never connect them directly to the relay.
| Common | 5A/250VAC |
| Use | Contactors / solenoid valves |
| Note | High power needs intermediate relay |
Note:Relay contacts can only switch small currents — high loads must use a contactor.