SAJ Hybrid Inverters
Authorized Dealer in Pakistan
Crust Engineering is an authorized dealer of SAJ H2 hybrid inverters in Pakistan — high efficiency, wide voltage tolerance, and dependable hybrid grid + battery operation.
About SAJ Hybrid Inverter
SAJ Hybrid Inverter (Guangzhou Sanjing Electric) is a Chinese energy technology company founded in 2005, with roots in motor drive and frequency-conversion engineering before moving into solar inverters in 2011. Since then it has grown into one of the more established hybrid inverter brands worldwide, with products installed across more than 80 countries and regional offices spanning Europe, Australia, Brazil, India and the Middle East.
The H2 series that Crust Engineering distributes in Pakistan is SAJ's core residential and light-commercial hybrid line — built to pair solar generation with battery storage, keep essential loads running through outages, and give homeowners a single app to monitor everything from panels to battery state of charge.
Models in Stock
| Model | Phase | Use Case |
|---|---|---|
| SAJ H2 6kW | Single Phase | Homes, small offices |
| SAJ H2 8kW | Single Phase | Larger homes, small commercial |
| SAJ H2 10kW | Single Phase | Commercial, heavier loads |
| SAJ H2 12kW | Single Phase | Larger commercial |
| SAJ H2 12kW | Three Phase | Commercial & industrial |
| SAJ H2 16kW | Three Phase | Industrial |
| SAJ H2 20kW | Three Phase | Large industrial |
Inside the H2 Series
Fast UPS Switchover
Transfers to battery power in as little as 10–20ms when the grid drops, so lights, routers, and fridges don't notice the outage.
Up to 200% DC Oversizing
Panels can be sized well beyond the inverter's rated output, letting installers harvest more energy from the same rooftop footprint.
LFP & Lead-Acid Compatible
Low-voltage models work with both lithium iron phosphate and lead-acid batteries, useful where budgets or existing banks vary.
Three Smart Operating Modes
Self-consumption, time-of-use, and backup-priority modes let the system be tuned to grid tariffs and load-shedding patterns.
Parallel Operation
Multiple units can be linked for larger sites, supporting both on-grid and off-grid configurations plus generator input.
IP65 Outdoor Rating
Dust- and water-resistant enclosure suited to rooftop or outdoor wall mounting in Pakistan's climate conditions.
SAJ's Product Family
H2 Hybrid Inverter
Solar + battery + grid in one unit, 6–20kW. The line Crust Engineering carries in Pakistan.
HS2 All-in-One ESS
Inverter, BMS, and modular battery combined in a single outdoor IP65 cabinet — no separate battery wiring.
On-Grid Inverters
Grid-tied only inverters spanning R5, R6, and C6 series, from small residential up to large commercial systems.
Gallery
Monitor It From Your Phone
Every H2 inverter connects to SAJ's eSAJ platform over Wi-Fi, giving you live visibility into generation, consumption, and battery state of charge — plus fault alerts — from a single app on iOS, Android, or the web.
Why SAJ
98% Efficiency
Up to 98% max, ~97.6% European efficiency
Wide Voltage Range
Compatible with most solar panel configurations
Hybrid Operation
Grid-tied with battery backup support
Remote Monitoring
Built-in RS232/Wi-Fi tracking