Speed controller 1 A for single-phase industrial and roof fans

Speed control for single-phase fans

The speed controller is intended for single-phase electric motors whose speed can be controlled by changing the voltage. It is used for industrial, duct and roof fans with a single-phase motor, if the fan manufacturer permits this type of control.

Main advantages

• Suitable for industrial, duct and roof fans with a single-phase motor.
• Load from 0.1 A to 1.0 A for connecting one or more fans.
• Flexible connection of several fans to one controller, if the total current does not exceed 1.0 A.
• Practical installation in a surface-mounted or flush-mounted version.
• Protection and safety with an F1.25 A fuse and an IP44/IP54 protection rating.

Use and selection

The controller is suitable for single-phase motors that can be controlled by changing the voltage. The load must be between 0.1 A and 1.0 A, and several fans can be connected to one controller if their total current does not exceed the maximum load. The controller must be neither too small nor too large for the fans it controls, so the selection should be made by an electrician or installer who calculates the total load.

Installation and connection

The controller can be surface-mounted on the wall or flush-mounted in the wall. For surface mounting, if necessary, a 5 mm diameter opening can be drilled in the bottom of the housing for condensate drainage.

Before connection, the mains power supply must be switched off. The controller is connected according to the diagram and the markings on the terminals. Connection should be carried out by a qualified electrician. The connection terminals are L, N, M and L1.

Maintenance

The controller does not require special maintenance. Clean the housing with a damp cloth and take care not to spill liquid on the controller. If it gets wet, connect it only when it is completely dry.

Frequently asked questions

Is the controller suitable for all fans?

No, it is suitable for single-phase motors where the manufacturer permits control by changing the voltage.

Can several fans be connected to one controller?

Yes, if their total current does not exceed 1.0 A.

Who should carry out the connection?

Connection should be carried out by a qualified electrician.

Conclusion

The speed controller is a practical solution for single-phase fans where voltage control is permitted. Thanks to the option of surface or flush mounting and the connection of several fans, it can be used in different cases and, with correct selection, ensures reliable operation.