Inverters

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter

₨ 75,000PKR · price may vary

Model: KNOX-91
Specifications: 12

Operating Voltage30 ~ 400 VDC
EfficiencyHas a peak efficiency of 93%
Rated power4000 VA / 4000 W
Surge Power6000 VA
Battery SystemWorks with a 24 VDC battery bank
View all 12 specifications ↓

Overview

The KNOX Krypton ECO-4000 is a 3kW hybrid solar inverter that supports a 24 VDC battery system and can also operate without a battery. It is an original equipment manufacturer (OEM) product from Voltronic Power of Taiwan, which is branded and sold by KNOX.Features:Hybrid Functionalit

Specifications

Summary
Operating Voltage	30 ~ 400 VDC
HARDWARE FEATURES
Efficiency	Has a peak efficiency of 93%
Rated power	4000 VA / 4000 W
TECHNICAL SPECIFICATION
Surge Power	6000 VA
General Specification
Battery System	Works with a 24 VDC battery bank
Battery-less Operation	Capable of running directly from solar power or the grid without batteries
Charge Current	Maximum solar charge current is 80A, with an 80A maximum AC charge current for a combined maximum charge current of 80A
Circuit voltage	450 VDC
Communication	Equipped with an RS232/RS485 communication interface, with an optional WiFi module available
MPPT	Uses Maximum Power Point Tracking (MPPT) technology for efficient solar charging
Output	Provides a pure sine wave output
PV Array Support	Supports up to 4000 W of solar panel power

How to read this datasheet

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter is listed with 12 published specifications from Knox, including operating voltage of 30 ~ 400 VDC, efficiency of Has a peak efficiency of 93%, rated power of 4000 VA / 4000 W and surge power of 6000 VA. Those figures are what decide whether this unit fits your system, so read them against the equipment it will connect to before comparing price.

For an inverter, the figures that matter most are topology — on-grid, off-grid, hybrid or micro, continuous AC output in kW, which caps the load you can run at once, surge or peak rating, which covers the brief inrush of motors and compressors and maximum PV input and the number of MPPT trackers, which set how many panel strings you can connect. It is the component that decides what a solar system can do: how much power you can draw at once, whether you can export to the grid, whether the system keeps running in a blackout, and how well the panels and battery are managed day to day.

Choosing an inverter: the checks that matter

The checks below apply to any inverter. Run them against the specification table above — most disappointing solar purchases are compatible-on-paper units that fail one of these in practice.

Check the surge rating if you run motors — deep-well pumps, compressors and older air conditioners can draw two to three times their running current for a few seconds at start-up.
Choose a hybrid inverter if a battery is in your plan now or later; retrofitting storage onto a pure grid-tie inverter usually means buying a second unit or an AC-coupled battery system.
Confirm the inverter is approved by your local utility or distribution network before you buy if you intend to export power — grid connection depends on certified anti-islanding and local grid-code compliance, not on the inverter's specifications alone.
Match the battery communication protocol (CAN bus or RS485) between inverter and battery. Compatible voltages are not enough; without a supported protocol the battery management system and inverter cannot agree on charge limits.

Common mistakes

Overlooking the IP rating. An outdoor installation needs at least IP65; indoor-rated units mounted outside fail early.
Buying on peak-watt price alone. A cheap inverter with a narrow MPPT window forces awkward string layouts and can strand a portion of the array.
Ignoring the ambient temperature rating. Inverters derate in heat, so a unit rated 5 kW at 25 °C may deliver noticeably less on a hot roof-adjacent wall at 45 °C.

Price and availability

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter is listed at ₨ 75,000 (PKR). Solar pricing moves with supply, import duties and exchange rates, and distributors set their own margins, so treat this as a comparison reference and confirm the current figure before you order.

SolarBazaar compares equipment rather than selling it. Shortlist here on specification and price, then buy from an authorised distributor or installer in your country: warranty cover on solar hardware is normally honoured through the channel you bought from, so confirm who supports Knox locally before ordering.

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter — frequently asked questions

How much does Knox Krypton Eco 4000 3kW Hybrid Solar Inverter cost?

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter is listed at ₨ 75,000 (PKR). The figure is indicative — solar prices move with supply, duties and exchange rates, and each distributor sets its own margin — so confirm the current price with a supplier before ordering.

What are the specifications of Knox Krypton Eco 4000 3kW Hybrid Solar Inverter?

We hold 12 published specifications for this inverter, including operating voltage 30 ~ 400 VDC, efficiency Has a peak efficiency of 93%, rated power 4000 VA / 4000 W, surge power 6000 VA and battery system Works with a 24 VDC battery bank. The full table is on this page, listed under model KNOX-91.

Who makes Knox Krypton Eco 4000 3kW Hybrid Solar Inverter?

Knox Krypton Eco 4000 3kW Hybrid Solar Inverter is a Knox product, listed under inverters with model reference KNOX-91. The Knox brand page lists the rest of its range so you can compare across the catalogue.

Is Knox Krypton Eco 4000 3kW Hybrid Solar Inverter right for my system?

That depends on what it has to connect to. For an inverter, check topology — on-grid, off-grid, hybrid or micro, continuous AC output in kW, which caps the load you can run at once and surge or peak rating, which covers the brief inrush of motors and compressors against the rest of your equipment before price enters the decision. Match the battery communication protocol (CAN bus or RS485) between inverter and battery. Compatible voltages are not enough; without a supported protocol the battery management system and inverter cannot agree on charge limits.

Where can I buy Knox Krypton Eco 4000 3kW Hybrid Solar Inverter?

SolarBazaar lists and compares equipment rather than selling it. Use the specifications and price here to shortlist, then buy through an authorised distributor or installer — buying in-channel is what keeps the manufacturer's warranty valid.

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