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Huawei SUN2000 40KTL-M3 40kW 3 phase inverter (Pack of 5)
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Huawei SUN2000 40KTL-M3 40kW 3 phase inverter (Pack of 5)

SUN2000-40KTL-M3-5
£10,353.78 ex VAT £12,424.54 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)40,000 W
Module Efficiency98.7 %
MPPT Quantity4
Min MPPT Voltage200 V
Max MPPT Voltage1,000 V
Max Input Voltage1,100 V
Max AC Power (5 min)44,000 VA
Max DC Current26 A
Max DC Inputs8
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Huawei SUN2000 40KTL-M3 40kW 3 phase inverter (Pack of 5)

Huawei · SUN2000 KTL-M3 Smart PV Controller

Huawei SUN2000 40KTL-M3 40kW 3 phase inverter (Pack of 5)

Huawei SUN2000 KTL-M3 Smart PV Controller — Fuse-free by design, with AI-powered arc-fault protection.

This listing is a pack of 5 of this inverter, priced for installers buying in volume. Everything below describes the unit itself.

Rated output
40,000 WThree phase AC output
MPP trackers
4Independent maximum power point trackers
Peak efficiency
98.7 %Conversion efficiency at best
Maximum DC voltage
1,100 VString voltage ceiling
MPPT window
200 – 1,000 VWhere it tracks
Overview

About the Huawei SUN2000 KTL-M3 Smart PV Controller

Huawei call these Smart PV Controllers rather than inverters, and the naming is not just branding. The design goal is a commercial array that manages and diagnoses itself, so a 500 kW roof does not need a person walking it with a clamp meter.

Two engineering decisions stand out. The DC side is fuse free: eight inputs across four MPP trackers, each rated 26 A to 30 A with 40 A short-circuit capability, so there are no string fuses to blow, to find, or to replace at height. And AI-powered active arcing protection listens for the signature of a DC arc and shuts down — the failure mode that starts rooftop fires and does not self-extinguish.

Type II surge arresters on both DC and AC sides come as standard, along with PID recovery, string fault monitoring and insulation resistance detection. Peak efficiency is 98.7 % on the 30 to 40 kW models.

For the installer

String design, certification and what is in the box

The details that decide whether this unit suits the job:

  • Four MPP trackers, eight inputs, fuse-free DC design.
  • 1,100 V maximum input, 200 V start-up, 200 – 1,000 V MPPT window, 600 V rated.
  • 26 A per MPPT on the 30 to 40 kW models; 30 A per MPPT and 20 A per input on the 50 kW.
  • Type II DC and AC surge arresters, PID recovery, arc fault protection and string fault monitoring all fitted.
  • Monitoring over WLAN, Ethernet or 4G via a Smart Dongle (ordered separately); MBUS supported with an isolation transformer.
  • Ripple receiver control supported for networks that use it.
Applications

Where this inverter earns its place

The SUN2000 KTL-M3 Smart PV Controller is specified most often for these jobs.

Commercial and industrial rooftops30 kW to 50 kW per unit, several per site.
Ground mount arraysFuse-free DC removes a maintenance item across a large field.
Sites with fire-safety scrutinyActive arcing protection is a specific, testable feature.
Huawei FusionSolar estatesOne monitoring platform across inverters, optimisers and dongles.
Optimiser-equipped commercial arraysPairs with the Huawei SUN2000-450W-P2 for module-level control.
Long-life assetsIntegrated PID recovery protects yield over decades.
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

Huawei SUN2000-40KTL-M3 technical data

This model
Maximum input current26 A
Output and performance
Rated output power40,000 W
Maximum apparent output power44,000 VA
Rated output voltage230 Vac / 400 Vac / 480 Vac, 3W/N+PE
Rated output current57.8 A
Maximum output current63.8 A
Maximum efficiency98.7 %
European weighted efficiency98.4 %
Common to the range
Maximum input voltage1,100 V
Start voltage200 V
MPPT operating voltage range200 – 1,000 V
Rated input voltage600 V
Number of inputs8
Number of MPP trackers4
Maximum short circuit current per MPPT40 A
Rated AC grid frequency50 / 60 Hz
Adjustable power factor range0.8 leading to 0.8 lagging
Maximum total harmonic distortion<3 %
Input-side disconnection deviceYes
Anti-islanding protectionYes
AC overcurrent protectionYes
DC reverse polarity protectionYes
PV array string fault monitoringYes
DC surge arresterYes, Type II
AC surge arresterYes, Type II
DC insulation resistance detectionYes
Residual current monitoring unitYes
Arc fault protectionYes
Ripple receiver controlYes
Integrated PID recoveryYes
CommunicationRS485; WLAN/Ethernet or 4G via optional Smart Dongle; MBUS with isolation transformer
Compliance and warranty
Grid connection standardsSee the certification documents attached to this listing
WarrantySee the warranty document attached to this listing
Specification sourceData Sheet SUN2000-30-40KTL-M and Data Sheet SUN2000-50kTL-M3
Frequently asked questions

Questions we get asked about this inverter

What does 'fuse free' mean and why does it matter?

The DC inputs are rated to handle the full short-circuit current of the strings connected to them, so no string fuses are needed. That removes a consumable, a failure point and a reason to send someone onto a roof.

What is active arcing protection?

Huawei's AI-based arc-fault detection. It monitors the DC waveform for the signature of an arc and shuts the inverter down. DC arcs are the fire risk on a PV array because, unlike AC, they do not self-extinguish at a zero crossing.

Do I need a Smart Dongle?

For remote monitoring, yes — WLAN/Ethernet or 4G, ordered separately. The inverter has built-in WLAN for commissioning via the FusionSolar app.

Can I use Huawei optimisers with it?

Yes, the SUN2000-450W-P2 and 600W-P work with these inverters over MBUS. Check the compatible-inverter list on the optimiser.

Battery?

These are PV inverters, not hybrids. Huawei's LUNA storage attaches to their hybrid ranges.

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 98.7 %More power from the same roof space

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Documents & Certificates
-- VDE-AR-N 4110/4120 - Sun2000-15-50KTL-M3 - EN Application Note RCD_FI-List_Huawei-SUN2000 Application Note Update Fusion App - DE CE Declaration of Conformity DoC_NC6 From_2023 Feb
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.