One-to-Two Water Pump Control Box
NENA one control two pump control panel with automatic pump alternation, auto fault switchover & high water level dual pump startup alarm. Supports drain & water supply mode, overload and phase loss protection, matched with float switch. Product Description NENA 1-duty-1-standby pump control cabinet manages two pumps for water supply and drainage…
NENA one control two pump control panel with automatic pump alternation, auto fault switchover & high water level dual pump startup alarm. Supports drain & water supply mode, overload and phase loss protection, matched with float switch.
Product Description
NENA 1-duty-1-standby pump control cabinet manages two pumps for water supply and drainage systems, widely adopted in commercial and residential buildings for uninterrupted fluid handling.
Application Scenarios
Suitable for high-rise water tank water supply, basement sewage drainage, constant pressure water supply with pressure tank.
Core Features
1 Duty + 1 Standby logic, supports automatic pump alternation for balanced runtime
High water level interlock: Dual pumps simultaneous startup with alarm notification
Automatic pump switchover and audible alarm when working pump meets fault
Two operation modes: Manual Mode & Automatic Mode
Three control logics: Drainage Mode, Water Supply Mode
Built-in safety protection: Overload protection, Phase loss protection
Supports float switch liquid level control
Status indicator: Power indicator, Running indicator for each pump
Working Principle
Normal Operation: One pump runs as duty pump, another pump keeps standby status. The system automatically alternates two pumps to avoid uneven wear.
Fault Protection: Once the duty pump fails due to overload or phase loss, standby pump starts instantly meanwhile trigger fault alarm.
Peak Load Response: When water level reaches high threshold, both pumps start simultaneously with alarm to prevent water overflow.
Drainage Mode: Automatic sewage removal for basement sump pit
Water Supply Mode: Automatic tank water replenishment
Advantages
Standby pump ensures continuous operation, effectively prevent basement flooding or water cut-off
Auto alternation extends service life of two pumps
High-water-level dual pump startup handles sudden peak water inflow
Complete motor safety protection system
Custom Options
Custom cabinet size, 220V/380V voltage; Optional remote fault signal output; stainless steel enclosure available for outdoor use.


