10.16mm PCB Screw Terminal Block — 0.4" Pitch Heavy-Duty Power Connector
10.16mm (0.4") PCB Screw Terminal Blocks — Maximum Pitch Heavy-Duty Power Wiring Connectors
The 10.16mm (0.4") pitch PCB screw terminal block is the largest standard PCB-mount screw terminal pitch, designed for maximum current capacity, heavy-gauge wire accommodation, and the highest creepage and clearance distances available in a through-hole PCB terminal block. At 10.16mm pitch, these terminal blocks are specified for high-current bus connections, three-phase power distribution, industrial motor drives, and any application requiring the absolute maximum electrical isolation between adjacent conductors on a PCB.
Key Technical Specifications
- Pitch: 10.16mm (0.4")
- Wire range: 20–8AWG (0.5–6.0mm²)
- Contact material: Tin-plated copper alloy
- Insulator material: PA66 (UL94V-0)
- Mounting: Through-hole PCB, spliceable
- Certifications: CE, RoHS
Ideal Applications
- High-current three-phase power bus connections on industrial PCBs
- Heavy-duty motor drive and servo amplifier power terminals
- Industrial power distribution board bus bars and feeder connections
- High-power battery pack and energy storage system terminals
- Welding equipment and plasma cutter power stage connections
- Maximum isolation applications requiring IEC 60664 pollution degree 3+
Why Choose Yoeruyo for 10.16mm Terminal Blocks?
10.16mm pitch terminal blocks are a specialty item rarely stocked by general distributors. Yoeruyo maintains consistent inventory for engineers designing high-power industrial equipment who need a reliable source for this maximum-pitch terminal block. CE and RoHS certified. Available in spliceable 2P and 3P units.
Frequently Asked Questions
Q: What is the maximum wire size for 10.16mm terminal blocks?
A: Up to 8AWG (6.0mm²), making these the highest-current PCB-mount screw terminal blocks in our range. For wire heavier than 8AWG, use DIN rail terminal blocks or bus bar connections.
Q: When should I choose 10.16mm over 9.5mm or 7.62mm?
A: Choose 10.16mm when you need to accommodate 8–10AWG wire, require maximum creepage distances for very high voltage applications, or are designing to a legacy North American standard that specifies 0.4" pitch terminal blocks.
