The Fourgroup Duplex‑UP M/3 is an electronic duplex control panel designed for direct start of two single‑phase pumps. Intended for clean or waste water applications, it supports alternation between pumps (integrated and excludable), accepts float or pressure switch inputs, and provides min/max level alarm outputs. The unit is optimized for controlling centrifugal and submersible pumps in domestic and light‑industrial pumping stations.

Key features

• Power range: 0.37 – 2.2 kW (suitable for single‑phase motors in this band).
• Supply Voltage: 230 V single‑phase.
• Duplex configuration: two relays/contactors for two pumps; alternation function can be disabled.
• Compatible with float switches and pressostats; alarm outputs for minimum and maximum level.
• Predisposition for Klixon (thermal protector) connection; authoretention selectable.
• Designed for use with clean water and sewage/waste water pumps; robust electronic protection and controls for reliable pump cycling.

Applications & benefits

Ideal for lift stations, sewage pumping, irrigation booster sets, and building drainage systems, the Duplex‑UP simplifies dual‑pump control and helps extend pump life by alternating duty and providing level alarms. The panel streamlines installation with standard inputs for floats/pressostats and can be configured for local/manual operation when needed.