Atom N Series 1 to 4 kW On Grid Inverters

The Uno Atom N Series is designed for small grid-connected PV systems that use a single principal roof orientation or string group. Ten power ratings from 1 kW to 4 kW allow close matching to modest residential and small-business loads. A low 80 V start-up, 70-500 V MPPT range, zero-export capability, compact natural-cooled housing and optional remote connectivity support efficient, practical installations where space and simplicity matter.

Key Features

• Ten power options from 1 kW to 4 kW
• One MPPT tracker and one string input
• 80 V start-up voltage
• 70-500 V MPPT range
• Zero-export support
• Natural cooling and IP65 protection
• Optional multi-channel remote monitoring

Recommended Applications

• Small homes and apartments
• Garages, garden buildings and outbuildings
• Small shops and offices
• Single-orientation PV arrays requiring export limitation

Model Selection Guidance

Choose Uno Atom N when one tracked string is sufficient. Match the rated AC power to the connection limit, and check the 20 A operating-current and 30 A short-circuit limits against the selected modules.

Essential Shared Specifications

• AC connection: 220/230 V; 0.85Un-1.1Un; L/N/PE.
• Grid frequency: 50/45-55 Hz, 60/55-65 Hz.
• Power quality: power factor 0.8 leading to 0.8 lagging; THDi <3%; DC injection <0.5%In.
• Communication and monitoring: RS485/RS232; GPRS/WIFI/Bluetooth/4G/LAN (optional).
• Protection architecture: DC reverse polarity; AC overcurrent, overvoltage and short circuit; thermal; insulation impedance; DC component monitoring; anti-islanding; residual current detection; optional AFCI; Type II DC and Type II AC surge protection; DC switch.
• Operating environment: 25 to +65°C; derating above 45°C (value printed in the official sheet); humidity 0-100%; altitude 2000 m.
• Topology and standards: Non-Isolated; OVC II (DC), OVC III (AC); grid standards IEC 61727, IEC 62116, EN 50549, VDE-AR-N 4105; IEC/EN 61000-6-1/2/3/4, IEC/EN 62109-1, IEC/EN 62109-2.