Advanced Structural Design Philosophy
To eliminate the industrial bottleneck of "complex multi-circuit branch routing," we presents the Enclosed Distribution Block 4x16sqmm. This integrated four-way distribution hub acts as a heavy-duty consolidated tap, designed to split a primary power source into four independent branch circuits. It carries a total continuous current rating of 160A (safely loading each individual way up to 80A), providing an elegant alternative to uninsulated open terminal strips.
Prime Technology Elements
Upgraded Anti-Tracking Polymer Foundation: Injected with specialized high-molecular engineering polycarbonate compound, the housing completely solves the brittle fracturing faults associated with traditional junction hardware. It resists aging, chemical weathering, and extreme physical impacts under severe thermal stress.
Dual-Driver Clamping Array: Wire ports utilize our patented composite combination slot screw design. This helps field technicians maximize assembly speed and deliver vibration-proof pressure on both copper and aluminum wires from 10mm² to 16mm².
Finger-Safe Isolation Design: Engineered to achieve a definitive IP20 safety profile, the integrated transparent shield prevents accidental live contact while providing maintenance teams an unhindered look to check for loose wire strands or thermal hotspots.
Widened Superior Copper Busbar: Incorporates an extra-wide, high-conductivity tin-plated copper busbar that ensures even current distribution across all four pathways, effectively suppressing bulk core heat generation.
Technical Parameters
| Parameter | Value |
| Number of Ways | 4 (independent, common busbar) |
| Suitable Wire Range (each way) | 10 mm² – 16 mm² (copper / aluminum) |
| Rated Current (per way) | 80 A |
| Total Rated Current | 160 A (sum of loads not to exceed 160 A) |
| Rated Voltage | 690 V AC |
| Contact Resistance (per way) | ≤0.2 mΩ (initial) |
| Dielectric Strength | ≥2.5 kV / 1 min |
| Torque Rating | ≥1.2 N·m |
| Wire Strip Length | 12–15 mm |
| Material | PC |
| Cover Material | Transparent polycarbonate (UL94 V‑0) |
| Busbar Material | Tin‑plated copper (widened for 4 ways) |
| Protection Rating | IP20 (cover closed) |
| Operating Temperature | -40 °C ~ +105 °C |
| Mounting Method | DIN rail (35 mm) or screw fixing |
| Dimensions (W×H×D) | approx. 70×50×32 mm (varies by model) |
| Certifications | CE, CCC, RoHS, IEC 60999‑1 |
Practical Field Installations
This four-way block excels in industrial control enclosures, residential distribution panels, and multi-branch machinery automation loops. By combining separate terminals into one block, it lowers bill-of-materials (BOM) costs and saves approximately 40% of standard DIN-rail layout space.
Certification & Performance Benchmarks
Tested to withstand demanding industrial cycles from -40°C to +105°C, this robust distribution unit fully complies with national compulsory standards. It is validated through official CCC, CE, and RoHS certifications, guaranteeing an insulation resistance that exceeds 30MΩ.
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