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One thing you should know upfront is that the 8500-cycle mechanical endurance isn't for heavy industrial use, but for most commercial and light industrial setups it's more than adequate — we've sold hundreds of these into distribution panels and motor control centers without issues. The thermal-magnetic trip unit handles overload and short circuit reliably, and the undervoltage protection is a nice bonus for sensitive equipment, though you'll need to confirm your specific voltage requirment because the standard coil is set for 400VAC.
We typically stock the 16A through 125A ratings in 3P configuration, with the 4P option avaliable on request (lead time is usually 2-4 weeks depending on quantity). The breaking capacity varies by model suffix: the C version gives you 35kA Icu at 400V, while the H version pushes to 100kA — most buyers go with the L or M for general use since they hit that 50-70kA sweet spot. It's worth checking your system's prospective short-circuit current before ordering, as overspecifying can waste money but underspecifying is a safety risk.
The reinforced BMC base is pretty much standard for this class, but what sets it apart is the 95% silver alloy contacts — that's better than many competitors who use 85-90% silver, which translates to lower contact resistance and longer electrical life under repeated short circuits. QPQ-treated high carbon steel mechanism components also resist corrosion better than plain steel, especially in humid environments (think coastal factories or unheated warehouses). Flashover distance is ≥50mm, which meets most international standdard for 690V systems.
Anyway, the dimensions vary slightly between breakers with different accessories — the 3P unit ranges form 75-92mm wide, 132.5-150mm deep, and 82.5-105mm tall, so double-check your panel cutout if you're retrofitting. Weight is about 1.3kg, which makes it manageable for single-person installation, but the terminal screws are torqued to 8-10 Nm so you'll want a decent torque wrench. We've found the nylon upper cover can get brittle if exposed to sustained temperatures above 55°C, so it's not suited for direct sunlight or furnace-adjacent placements.
The COA we provide covers dielectric strength (typically 2500V for 1 minute) and the impulse voltge rating of 8kV, but if you need full type test reports for compliance with GB50054 or GB/T2423.10/18, we can email those within a day or so. CCC certification is current, and we also have ISO9001 for the production line — the factory runs about 50,000 units per year, so batch consistency is generally good. For order quantities under 20 pieces, we usually have stock ready to ship within 3-5 working days.
We typically require a MOQ of 50 units for this model, but we can negotiate for smaller trial orders if you're just starting out.
Lead time is usually 15-20 working days for standard orders, depending on stock levels. Custom configurations might add a few days.
Yes, it's CCC certified along with ISO9001, so you're covered for quality and compliance in China and many other markets.
Absolutely, we can fit an undervoltage release module as an optional accessory. Just let us know your requirements when ordering.
Keep it in a dry, clean place at temperatures between -5°C and +55°C, and avoid direct sunlight or moisture to prevent damage to the BMC enclosure and contacts.
