As a product its fine. BUT for my situation the surge of the inverter charging the capacitors at power up causes it to go into E1 fault which is high current. Even though the inverter is fused at 20A and this is 5 times bigger it can't cope with high incrush currents so its now back in its box.
Solid piece of kit which does what it says on the box, though perhaps a tad on the pricey side compared to other similar products. But, it has a quality and reliability reputation which is why I buy Victron products.