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Sigenergy M1 50kW PV Inverter
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Sigenergy M1 50kW PV Inverter

SIG-50M1
£1,697.87 ex VAT £2,037.44 inc VAT

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High Conversion EfficiencyMore of your solar reaches the home
MPPT TrackingMaximises yield in changing light
Grid CompliantMeets UK G98 / G99 requirements
Technical Specifications
Rated Power (Pmax)50,000 W
Module Efficiency98.6 %
MPPT Quantity4
Min MPPT Voltage160 V
Max MPPT Voltage1,000 V
Max Input Voltage1,100 V
Max DC Power100,000 Wp
Max AC Power (5 min)55,000 VA
Max DC Current32 A
Height640 mm
Width918 mm
Depth340 mm
Weight75 kg
ConnectorMC4
IP RatingIP66
Operating Temperature-30 °C to +60 °C
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Sigenergy M1 50kW PV Inverter

Sigenergy · Sigen PV Inverter M1

Sigenergy M1 50kW PV Inverter

Sigenergy Sigen PV Inverter M1 — 75 kg for 100 kW, and no data logger needed when you parallel them.

Sigenergy are a newer name in commercial PV and the M1 is their argument for why that is not a disadvantage. A 100 kW inverter that weighs 75 kg is unusually light for its class, and that translates directly into cheaper transport, easier lifting and simpler mounting on a retrofit building.

Rated output
50,000 WThree phase AC output
Maximum PV input
100,000 WpArray size this inverter accepts
MPP trackers
4Independent maximum power point trackers
Peak efficiency
98.6 %Conversion efficiency at best
Maximum DC voltage
1,100 VString voltage ceiling
MPPT window
160 – 1,000 VWhere it tracks
Protection rating
IP66Indoor or outdoor mounting
Overview

About the Sigenergy Sigen PV Inverter M1

The feature that saves the most time on site is parallel operation without a data logger. Multiple M1 units connect to one another and present a single monitored system, so a 500 kW roof does not need a separate communications box, its own power supply and its own commissioning step.

Two safety details stand out. Industry-leading AFCI detection covers the DC arc-fault risk. And an instant PV reverse-connection alert catches a polarity error at the moment it is made, rather than at commissioning — on a large array with hundreds of connectors, that is a genuinely useful thing for the person doing the wiring.

For the installer

String design, certification and what is in the box

The details that decide whether this unit suits the job:

  • 4 to 8 MPP trackers depending on model, 2 PV strings per MPPT, 32 A or 40 A per MPPT, 50 A short-circuit.
  • 1,100 V maximum, 180 V start-up, 160 – 1,000 V MPPT window, 600 V nominal.
  • Parallel connection of multiple units with no data logger required.
  • Instant PV reverse-connection alert during installation.
  • AFCI, insulation monitoring, residual current monitoring, DC/AC Type II surge protection and anti-islanding all fitted.
  • 918 × 640 × 340 mm, 75 kg, IP66, smart air cooling, −30 °C to +60 °C.
  • MC4 DC (max 6 mm²), OT/DT AC terminals (max 240 mm²), WLAN / Fast Ethernet / RS485 / Sigen CommMod.
Applications

Where this inverter earns its place

The Sigen PV Inverter M1 is specified most often for these jobs.

Large commercial rooftops50 kW to 125 kW per unit.
Multi-unit installationsParallel operation without a separate data logger.
Retrofit buildings75 kg is a meaningful advantage where access is difficult.
Ground mount arraysUp to eight trackers per unit.
Sites with SigenStor storageSame ecosystem and monitoring platform.
High-altitude sitesRated to 5,000 m, derating above 4,000 m.
Battery and storage

Can I add a battery to this?

This is a grid-tied PV inverter. It converts solar DC into AC for the property and the grid, and it has no battery port. That is not a shortcoming — it is the right architecture for a system without storage, and it is why it costs what it does.

If storage is on the roadmap, you have two routes. Add an AC-coupled battery system alongside this inverter later, which works with any PV inverter and needs no change to what is already installed. Or choose a hybrid inverter now and pay for a battery port you will use in a year or two. We are happy to talk that trade-off through before you order.

Technical specification

Sigenergy 50M1 technical data

This model
Recommended maximum PV power100,000 Wp
Maximum input current32 A
Number of MPP trackers4
Output and performance
Rated output power50,000 W
Maximum apparent output power55,000 VA
Rated output current76.0 A
Maximum output current83.6 A
THDi<3 %
European weighted efficiency98.3 %
Common to the range
Maximum DC input voltage1,100 V
Nominal DC input voltage600 V
Start-up voltage180 V
MPPT voltage range160 – 1,000 V
Number of PV strings per MPPT2
Maximum short circuit current per MPPT50 A
Nominal output voltage380 / 400 V, 3W+(N)+PE
Nominal grid frequency50 / 60 Hz
Power factor0.8 leading to 0.8 lagging
Maximum efficiency98.6 %
Safety protectionDC reverse polarity protection, insulation monitoring, residual current monitoring, arc fault circuit interrupter, AC overcurrent / overvoltage / short-circuit protection, Type II DC/AC surge protection, anti-islanding protection
Dimensions (W / H / D)918 / 640 / 340 mm
Weight75 kg
Nighttime power consumption<3.5 W
Storage temperature range−40 °C to +70 °C
Operating temperature range−30 °C to +60 °C
Relative humidity range0 – 100 %
Maximum operating altitude5,000 m, derating above 4,000 m
PV connection typeMC4, max 6 mm²
AC connection typeOT / DT terminal, max 240 mm²
CoolingSmart air cooling
Ingress protectionIP66
CommunicationWLAN / Fast Ethernet / RS485 / Sigen CommMod (4G/3G/2G)
Compliance and warranty
Grid connection standardsIEC / EN 62109-1, IEC / EN 62109-2, IEC / EN 61000-6-1, IEC / EN 61000-6-2
WarrantySee the warranty document attached to this listing
Specification sourceData Sheet Sigenergy PV Inverter M1 50-125kW EN, document version 20241225
Frequently asked questions

Questions we get asked about this inverter

Do I need a data logger?

No. Multiple M1 units connect in parallel and report as one system without an external logger. That is a box, a power supply and a commissioning step removed.

What is the PV reverse-connection alert?

If a string is connected with reversed polarity, the inverter says so immediately rather than at commissioning. On a large array that catches the error while the installer is still at the connector.

How does it compare on weight?

75 kg for up to 125 kW is light for the class. Comparable 100 kW units are often 90 kg or more.

Can it charge a battery?

The M1 is a PV inverter. Sigenergy's SigenStor and SigenStack are the storage platforms; ask us about pairing them.

What altitude is it rated to?

5,000 m, with derating above 4,000 m.

ClearRay Solar

Documents, advice and trade pricing

Every datasheet, certificate, installation manual and warranty document we hold for this product is in the Documents tab below. See the rest of our inverter range and our solar panels, or email our sales team at sales@clearraysolar.com if you would like us to check a string design or a compatibility question before you order.

High Efficiency 98.6 %More power from the same roof space
IP66 RatedBuilt for UK weather conditions

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Documents & Certificates
Data Sheet Sigenergy PV Inverter M1 50-125kW EN Data Sheet Sigenergy Sigenstor CommMod EN G100 certification Sigenergy C&I UK G99 Certificate Sigenergy C&I GB
Shipping & Returns

Delivery times vary by region:

  • UK — 1-2 business days
  • Highlands & Islands — 1-2 business days

Returns accepted within 14 days of delivery for unused items in original packaging.