PT418
PUMP ALTERNATION RELAY (FULL ALTERNATION)
The device is used in two pump systems for alternating the operation of the two motors, distributing the workload equally between the two.
The device is used in two pump systems for alternating the operation of the two motors, distributing the workload equally between the two.
It is usually connected to pressure or float switches. Only voltage free contacts can be connected.
It is installed in an electrical panel on a standard relay socket.
Every time input P1 is short-circuited, a different output is activated, starting a different pump. If input P2 is also short circuited, both inputs are activated, setting both pumps in motion.
- power supply
230V AC / 50Hz
- relay outputs
Two (2) normally open contacts, 10Α / 250V AC cat. AC1
- indications
PUMP 1 ON and PUMP 2 ON
- connection socket
Bulb type, 8p or 11p
- protection
Varistor (against overvoltage and lightning)
- operation temperature
-20 to +50 C
- inputs
Two (2) voltage-free float-switch or pressostat inputs
- enclosure
Plastic box / 42x89x94mm / IP41