M15A / M20A / M30A Flex

Three-phase inverters with 15, 20 or 30 kW and a peak efficiency of up to 98.6%. The devices are suitable for 2 x 2 (M15A and M20A) or 3 x 2 module strings (M30A) and have built-in Wi-Fi. Perfect for private and commercial systems.

Product Introduction

Accessories & spare parts

Product Introduction

Key features

Focus of application

Heat is exchanged with the environment via cooling fins on the rear side - without fans. This makes the inverters particularly quiet during operation - ideal for use in or on residential and office buildings. The housing is compact and IP66 rated, and the mounting plate for wall mounting is included.

Grid connection

The grid connection is via the supplied 5-pin plug. The inverter is suitable for all types of grid and is certified according to VDE-AR-N 4105 and 4110.

Module connector

The inverters offer connections for 4 (M15A, M20A) or 6 (M30A) module strings, which are controlled in pairs. This allows the modules to be flexibly arranged, even on several roofs.

Safety features

With safety features such as interchangeable Type 2 AC and DC surge protection devices, arcing detection and reverse polarity protection, these inverters offer increased safety with regard to lightning and fire protection in buildings.

Built-in Wi-Fi interface

Quick installation and commissioning with a smartphone and the DeltaSolar app. For plant monitoring via the Internet in the MyDeltaSolar Cloud (registration required), Delta's online monitoring system, the inverter must be connected to a WiFi Internet router. Alternatively, the inverter can also be monitored locally using the DeltaSolar app.

Applications

Technical data

A complete overview of the technical data can be found in the data sheet.

Input (DC)	M15A Flex	M20A Flex	M30A Flex
Maximum power	16.5 kW	22.0 kW	33.0 kW
Input voltage range	200 to 1000 VDC
MPP voltage range at full power	380 to 900 VDC	480 to 900 VDC
Output (AC)	M15A Flex	M20A Flex	M30A Flex
Maximum apparent power	16.5 kW	22.0 kW	33.0 kW
Rated apparent power	15.0 kVA	20.0 kVA	30.0 kVA
Output voltage range	230/400 VAC -20%/+30%; 3 phases + PE or 3 phases + N + PE
General specifications	M15A Flex	M20A Flex	M30A Flex
Peak efficiency	98.4%	98.5%	98.6%
Operating temperature range	-25 to +60°C
Mechanical details	M15A Flex	M20A Flex	M30A Flex
Dimensions	651 × 520 × 220 mm
Weight	40.5 kg		42 kg
Cooling	Natural convection, without fans
AC plug type	Amphenol C16-3
DC plug type	2 pairs of Amphenol H4		3 pairs of Amphenol H4
Degree of protection	IP66
Communication	M15A Flex	M20A Flex	M30A Flex
Communication interfaces	2 x RS485, 1 x dry contact, 1 x external power-off, 6 x digital inputs, Wi-Fi