What does the fan of the Siemens 3RW soft starter do?

Create Date: 2024-8-30 12:03:23|Source: Siemens/Siemens

The function of the 3RW soft starter fan is to speed up the heat dissipation, which can effectively improve the operating frequency of the soft starter.

What does the fan of the Siemens 3RW soft starter do?

3RW30 soft starter cannot be equipped with a fan.

The 3RW402-404 soft starter fan is not a standard equipment, and the required order is rated (3RW402 can use 3RW4928-8VB00, 3RW403 and 3RW404 can use 3RW4947-8VB00). This fan can be plugged in directly and can be used, and no rated power supply is required. After the motor starts, the fan switches to the built-in bypass and starts to work in the future, and gives the motor stop command to continue to work for 60 minutes in the future, and then stops. If the operating power of the soft starter is disconnected, the fan will stop immediately.

3RW405-3RW407 soft starter fans are standard equipment and do not need to be rated for ordering. If the fan you bring is broken, you can also buy it yourself and replace it. The fan starts working when the first start command is given, and the motor will continue to work for 60 minutes after giving the stop command, and then stop. If the operating power of the soft starter is disconnected, the fan will stop immediately.

The 3RW44 soft starter fan is equipped with a standard and does not need to be ordered. It should be noted that the 3RW446 specification is equipped with two electric fans, and the other standard equipment is one electric fan. If the fan you bring is broken, you can also buy it and replace it yourself, and the order number of the two fans of 3RW446 is different. The working method varies according to the variety, E≤04 (a very old variety, no longer available) will always work when the soft starter is controlled, and the control voltage will be stopped when the control voltage is disconnected. The E≥05 (all newly purchased products are varieties 05 or above) starts working when the first start command is given, and the motor stop command will continue to work for 30 minutes in the future, and then stop. If the operating power of the soft starter is disconnected, the fan will stop immediately.

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