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Actually ended up switching to these after another block couldn't handle the load spikes we were seeing in our solar combiner setups, where 600V rated votage is pretty much necessary if you're dealing with industiral arrays. The 100A to 400A current options cover most of what we run, and most buyers go with the 150A for standerd gear — just watch that spacing at 21mm per bit for tight panels.
We usually have stock on the rhombus model from chenf, roughly 50 units or so, but confirm lead time if you need the 400A version because those sometimes take 20 days or so depending on the production batch. The copper galvanized material handles corrosion fine for our enviroment, and what it does is conduct electricity reliably through the AC/DC interface, though it's not suited for outdoor panels exposed to direct salt spray without an extra housing.
First batch arrived with packaing that listed specs clean — 20mm x 20mm x 9mm for the body, temperature range from -40ºC to 105ºC, which matters if your gear sits near motors throwing heat. Injection molding gives them a clean finish, better than the stamped ones we tried before, and the TDS included with shipment confirms all that.
Been relying on this supplier for about two model years now, and customs clearance paperwork like the COA and material reports ships with every export order (usually 2-4 weeks). That CE marking covers EU markets, and the UL recognition means we don't scramble for documentation during inspections, though one time a batch had slightly off color on the red units — still functioned fine, but it's just something they flagged.
Another thing buyers might not think to ask is the PCB hole alignment; the rectangular shape works with standard DIN rail, so we just pop them on without modifications, which saves time over some prismatic competitors. The 100A version has tighter tolerance on metal contact than the 400A variant for low-power lines.
So anyway, the working temperature range holds steady even after 30 thermal cycles in our test lab, and we've used these in heavy machinery control cabinets with no hiccups.
Our MOQ for the Rhombus 150A model is typically 100 pieces per size and color, but we can be flexible on larger mixed orders. If you need less, just let us know your target quantity and we'll see what we can do.
Standard lead time is 10-15 working days after order confirmation and deposit, depending on the quantity. For urgent orders, we can sometimes expedite to 7-10 days if stock is available.
Yes, we can provide a material test certificate for the copper galvanized parts and a RoHS compliance report upon request. Just mention it when you place the order.
We offer red and black as standard, but custom colors are possible for orders over 500 pieces. The 21mm per bit spacing is fixed for this model, though — we can't change that without a new mold.
Store them in a dry, cool place, ideally between -10°C and 40°C, away from direct sunlight and moisture. They come in sealed poly bags, so keep them in that packaging until use to prevent oxidation.
