PTC thermistor relays and temperature relays for motor protection reliably protect pumps from damage caused by excess temperature and ensure a longer service life. PTC thermistor relays with ATEX approval protect pumps even in potentially explosive areas.
Level relays from ZIEHL protect pumps from running dry.
Phase sequence relays change automatically wrong phase-sequence so they ensure that pumps always run in the right direction.
Combined heat and power stations