STRA-1-75L

The fan speed is regulated in five stages with the switch on the front. Signal lights on the front indicate operation and alarms. If several fans are connected, the sum of the motors' maximum currents must not exceed the rated current of the transformer. Voltage output 230 VAC for e.g. operation indication or damper motor. Alarm signal 230 V and 2 contacts for remote control to / from CC-CC (normally closed), OC-OC (normally open). Automatic restart after power failure. The transformer is fitted with a fuse on the secondary side. Motors equipped with an extended thermal contact must be connected to the built-in motor protection.