Original Genuine Mebay ATS420 Dual Power ATS Automatic Transfer Switch Controller

Wide Application Range

Commercial building backup power ATS cabinet, villa residential standby power distribution box, small data room uninterrupted power system, factory workshop emergency power supply, construction site temporary dual power ATS panel, light marine single generator backup power control cabinet, generator factory ATS complete machine assembly, renovation replacement of old imported ATS transfer controllers, all single mains + single generator dual power backup projects requiring automatic load switching.

Product Specifications

• Brand: Mebay (Yokden)
• Model: ATS420 (ATS420R RS485 remote upgrade version)
• Core Function: Dual power mains-generator ATS automatic transfer controller, front USB offline programming (Base ATS420 No RS485; ATS420R with rear RS485 Modbus RTU, No CAN J1939, No engine sensor input)
• Working Power Supply: DC8V ~ 36V universal 12V/24V genset battery wide voltage
• AC Sampling Standard: Support 1P2W / 2P3W / 3P4W / 3P3L single/three-phase dual source voltage sampling
• Communication Interfaces: Front USB debug port; ATS420R add isolated rear RS485 A/B Modbus RTU (No CAN bus)
• Display: 2.8-inch backlight graphic LCD with power flow mimic diagram, English menu
• Panel Cutout Size: 130 × 92 mm, overall dimension 142 × 105 × 45 mm
• Front Panel Protection Grade: IP54 dustproof & waterproof silicone sealing industrial panel
• Operating Temperature: -25℃ ~ +70℃
• Warranty: 12 months genuine factory warranty
• Certifications: CE, ISO9001, EMC EN55032 IEC61000-4

Common Equipment Failures Solved

• LCD no display after power on: Check battery DC voltage within DC8~36V working range, confirm B+/B- positive and negative wiring correct
• PC cannot connect via USB: Replace standard data cable, exit ATS fault lock state before parameter reading
• ATS frequent false transfer: Adjust mains loss/genset recovery delay time to filter instantaneous voltage fluctuation
• S1 and S2 close simultaneously alarm: Check ATS switch mechanical interlock wiring, recalibrate switch feedback DI parameters
• Need remote mobile APP cloud monitoring: Select ATS420R RS485 version, match DT1000 cloud DTU module
• Need engine RPM/oil pressure/water temp monitoring: Match DC42D/GM50HR genset controller, ATS420 only responsible for dual power transfer control
• Need generator power factor/kWh statistics: Match GV59R three-phase multi-function power meter
• Old ATS panel upgrade without cabinet modification: ATS420 same universal 130×92mm cutout size, direct replacement