We are a specialized manufacturer focused exclusively on DC protection for solar PV systems. Our product range includes DC circuit breakers, isolator switches, surge protection devices, combiner boxes, and AC-side protection components. We are a young team with deep industry experience — our core members come from established electrical protection manufacturers.

Our manufacturing and headquarters are based in wenzhou. We currently do not have overseas offices, but we work directly with partners and distributors in multiple countries. Our team is accustomed to working across time zones and responds to inquiries promptly.

We design our products to meet IEC/EN 60947, UL 489, and GB/T 14048 standards. Our components use UL94 V-0 rated materials and are built to IP66 and IK10 specifications.

Three key parameters: voltage, current, and breaking capacity. The breaker voltage rating must be ≥ your system’s maximum voltage (including low-temperature rise). Current rating should be ≥ Isc × 1.25 (continuous load factor). Breaking capacity must cover the maximum possible fault current at the installation point. For a detailed guide, see our blog or contact our engineers.

MCB (Miniature Circuit Breaker) covers 1A–63A with fixed trip settings — ideal for string protection. MCCB (Moulded Case Circuit Breaker) covers 63A–1600A+ with adjustable trip settings — suitable for main feeders, inverter inputs, and battery strings. See our detailed comparison guide for more information.

Absolutely not. AC breakers lack the magnetic blow-out coils and arc chambers required to extinguish DC arcs. DC arcs have no natural zero-crossing and will persist, potentially causing contact welding, equipment failure, or fire. Only use breakers clearly marked with DC voltage ratings.

For standard products, our MOQ is 1 piece for sample orders. This allows you to test and qualify our products before committing to larger quantities. For production orders, MOQ varies by model — typically 50-100 pieces. Contact our sales team for specific model MOQ details.

For sample orders: we ship within 3-5 business days. For production orders: typically 5-10 business days, depending on quantity and configuration. Express shipping (DHL/FedEx) takes 3-5 days for delivery. Sea freight takes 20-40 days depending on destination.