258520 Condor DPA-Board for MDR 3

Phase sequence, phase drop protection board

Installing the DPA - circuit board onto MDR 3, the pressure switch offers the following additional functions:

• Phase sequence control
• Phase failure detection
• Supervision of an external opener possible, e. g. Klixon for temperature
• supervision (clamp tension < 230 V)
• Undervoltage release

The MDR 3 can be equipped or retrofitted with an operating hourmeter to monitor the pump and compressor running time. The hourmeter is available as a kit and can be attached to the cover in 4 different positions, each offset at an angle of 90°. This ensures optimum readability. The kit consists of an operating hourmeter for either 230 V or 400 V and a perforated MDR 3 cover with or without ON/OFF lever. For all functions the neutral conductor is not necessary. In case of malfunction the pressure switch will be switched off. Only upon solving the malfunction, the pressure switch can be switched on again.

Field of application: place-variable compressors, building site-area etc.

(Use only with MDR-3..E/A and RU 3/400-SO; article-nr. 201557)