Product Overview
The 3×30 10-Pole Neutral Busbar is a high-capacity copper distribution bar with a 90mm² effective cross-section, designed for neutral and protective earth connections in medium-to-large distribution panels and switchgear assemblies. With ten connection poles and a robust conductor profile, it handles substantial neutral currents in multi-circuit commercial and industrial installations.
Electrical & Physical Parameters
| Parameter | Specification |
| Busbar Cross-Section | 3mm × 30mm = 90 mm² |
| Material | C11000 High-Conductivity Copper (99.9% Cu) |
| Conductivity | ≥ 58 MS/m (100% IACS) |
| Rated Current (Continuous) | 300A (in free air, 30°C ambient) |
| Number of Poles | 10 |
| Screw Specification | M5 (standard) / M6 (heavy-duty option) |
| Recommended Torque (M5) | 2.5–3.5 N·m |
| Recommended Torque (M6) | 4.5–5.5 N·m |
| Hole Diameter | 5.2mm (M5) / 6.2mm (M6) |
| Pole Center Distance | 18mm or 25mm (specify when ordering) |
| Overall Length | ~230mm (18mm pitch) / ~260mm (25mm pitch) |
Surface Treatment: Tin-Plated Anti-Oxidation
| Attribute | Specification |
| Plating Method | Electrolytic Tin Plating |
| Plating Thickness | 3–5 μm (standard) / 5–8 μm (heavy-duty option) |
| Purpose | Prevents copper oxidation and sulfidation, maintains low contact resistance, improves corrosion resistance in harsh environments |
| Applicable Environments | Indoor and outdoor distribution panels, high-humidity locations, coastal areas, industrial plants with corrosive atmospheres |
Tin plating ensures that the busbar maintains its original conductivity and contact performance even after years of service, eliminating the need for periodic cleaning or re-tightening that unplated copper bars require.
Engineering Dimension Drawings (CAD)
A complete CAD dimension drawing (DWG / PDF format) is available for this busbar, including:
Applications
Neutral busbar in commercial distribution boards (DBs), main distribution boards (MDBs), motor control centers, switchgear assemblies, generator control panels, and solar inverter AC combiner boxes requiring a 10-pole, 90mm² neutral connection point.
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