Durable and Precision-Engineered Power Distribution Blocks

Distribution blocks are available from around 115 A to 760 A and higher, depending on body size, conductor range and terminal configuration. The rating must match the conductor ampacity and applicable electrical code.

Common primary ranges are 2 AWG–600 kcmil (about 35–300 mm²) with secondary taps from 14 AWG to 1/0 or larger. Ranges are marked on the block and depend on the design.

Yes. Tin-plated aluminium blocks rated Al/Cu (AL9CU) accept both copper and aluminium conductors. Aluminium conductors should be wire-brushed and coated with inhibitor compound before insertion.

In North America, distribution blocks are typically listed to UL 1953 or recognized under UL 1059 and UL 486E. In other markets, IEC 60947-7-1 for terminal blocks and local codes apply.

Blocks are mounted on insulating bases of glass-filled polyamide, polycarbonate or thermoset material and can be supplied with finger-safe covers to IP20 to protect against accidental contact.

Torque depends on the conductor size and screw type and is marked on the block or label, often from about 4 Nm for small taps to 30–50 Nm for large conductors. Always use a calibrated torque tool and follow the marked values.

Aluminium blocks are lighter and more economical, particularly in large sizes, while tin plating ensures stable contact with copper conductors. They are widely used in switchboards, solar and industrial panels.

Yes. They are used in PV combiner boxes and EV charger feeders. For DC systems, the voltage rating of the insulating base and creepage distances must suit the system voltage.

Blocks are commonly available with 2 to 12 outputs per pole and in 1-, 2-, 3- or 4-pole arrangements. Custom tap configurations can be produced for OEM panels.

Blocks can be mounted on DIN rails or bolted to a panel through the insulating base. Mounting hole spacing and base dimensions are provided on the drawing.

Terminal bodies are machined or extruded from 6061 or 6101 aluminium and tin plated, with steel or aluminium set screws with suitable plating to resist corrosion.

Yes. We produce custom distribution blocks, busbar terminal connectors and multi-port lugs to OEM drawings, including special port sizes, mounting and marking.

Blocks are checked for dimensions, thread quality, plating thickness and screw torque. Heat-rise and pull-out testing can be performed on request according to the applicable standard.

Please share current rating, conductor ranges for primary and secondary ports, number of poles and outputs, insulation requirements, certifications needed and quantity.