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We’ve had EU buyers running a food processing plant with a mix of motors and lighting panels — they needed the adjustable overcurrent range more than a fixed 250A cut-off, so this unit basically lets you dial from 100A up to full capacity depending on how teh load shifts seasonally.
It carries a 50kA Icu and 35kA Ics at 400V AC 50Hz, which is better than most similarly sized MCCBs for branch circuits where fault currents peak high but you still need coordination downstream, and the residual settings cover 30mA through 500mA so you can match earth leakage sensitivity to wet areas or general distribution without swapping gear.
For US buyers shipping into New York or Chicago, we’ve got the CE and CCC documentation ready — about a 12-page package that covers the ISO9001 certs and test reports — but it’s not UL listed, so if your AHJ demands that sticker, this isn’t the breaker you want for a primary service entrance.
Mechanical life is 7000 operations and electricla is 1000, so it’s fine for a power distribution panel that cycles monthly but not for a welding bench that trips hourly — you’ll wear out the contacts fast.
Anyway, packaging runs roughly 2.5kg per unit with a 142×165×110mm footprint, we usually ship on skids of 20 or so, but confirm the lead time for larger MOQs because the DIN rail adapters occasionally batch apart from the panel-mount frames.
One concrete thing we’ve seen — arc extinguishing chambers collect carbon dust faster if run near the -5°C end of the temp range, so in cold storage appliction, we recommend lengthening inspection intervals from 1000 cycles to every 700 or so.
Yes, the rated current is adjustable from 100A to 250A, so you can set it to 100A or anywhere in between to match your load requirements.
Our MOQ for the ARM1L-250A 4P is typically 10 pieces, but we can discuss smaller orders depending on stock availability.
Yes, we can provide CCC, CE, and ISO9001 certificates along with the product, and a test report is available upon request.
You can choose 30mA, 100mA, 300mA, or 500mA via a dial on the front. For general protection, 300mA is common; use 30mA for personnel safety.
It supports both DIN rail and panel mount installations, so you can use whichever fits your setup best.
