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We've got the ARM6HU-400 in stock right now actually, so if you need 225A to 400A for a solar setup, our company can ship within about 10-15 working days give or take — it's typically packed in individual cartons with foam inserts to protect the terminals.
What really sets this apart is the breaking capacity hitting 30kA at 800V, and even at 1000V you're still getting 12kA, which is better than some air breakers we've seen for consistent fault clearing in high-voltage PV systems.
The mechanical life is 10,000 operations, electrcial at 2,000, but we usually find most buyers care more about insulation voltge (1140V) and impulse withstand at 8kV, since that's what keeps the arc from jumping where it shouldn't.
Anyway, the air arc extinguishing medium is pretty straightforward here — no gas or oil to worry about, so it's easier to handle during insallation, though the dimnesions are 150×257×150mm so you'll want to double-check your combiner box cutout size.
For ordering, lead time may stretch to 30 days or so if we're out of the 400A version, but the 225A is usually ready faster; also, it carries ISO9001 and CCC marks, but we don't yet have third-party testing on the zero flashover claim every batch varies slightly.
One thing that might trip you up — these work great for overcurrent and short circuit protection in solar combiner boxes, but they're not designed for motor starting or high-inductive loads, as the tripping curve's optimized for photovoltaic systems, not general indutrial gear.
Our MOQ for the ARM6HU-400 is typically 50 units, but we can discuss smaller orders depending on stock availability.
Standard lead time is 15-20 working days from order confirmation. We can expedite to 10 days for urgent orders, subject to production capacity.
Yes, we provide ISO9001 and CCC certification copies with every shipment. You'll get them in the packing list or via email upon request.
Correct—at 1000V AC, the ARM6HU-400 has an Icu of 12kA. This means it can safely interrupt a fault current up to 12,000 amps at that voltage, which is standard for most photovoltaic setups.
Store it in a dry, clean place with temperatures between -25°C and 55°C, away from dust and corrosive gases. Keep it in its original packaging to protect the terminals and arc chamber.
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