Salt Spray Protection Wiring Tips for ZCEBOX Plastic Distribution Box Junction Boxes in Marine Shipping Scenarios

Nov. 14, 2025

In marine shipping scenarios (ocean-going cargo ships, coastal vessels, offshore platforms), junction boxes need to withstand long-term high salt spray, strong humidity, sea spray and hull vibration, and are prone to problems such as box corrosion, terminal oxidation and seal failure. ZCEBOX shares 2 targeted salt spray protection tips that comply with marine industry standards (IEC 60529, GB/T 10125):

1.Salt Spray Corrosion-Resistant Materials and Model Adaptation

Core Selection: Prioritize ZCEBOX marine-specific salt spray-resistant models (salt spray protection grade ≥1000 hours, waterproof grade IP68), with box body made of corrosion-resistant modified glass fiber reinforced PP material (added marine-grade anti-salt spray agent), surface treated by electrophoretic rust prevention to resist seawater salt erosion;
Terminals and Wires: Select 316L stainless steel corrosion-resistant terminals (gold-plated contacts, contact resistance ≤5mΩ), paired with marine-specific salt spray-resistant wires (insulation layer made of cross-linked polyethylene XLPE material, weather resistance grade UV5); wire shielding layer adopts tinned copper braid (grounding resistance ≤1Ω) to avoid oxidation and breakage caused by salt spray;
Auxiliary Protection: Install ZCEBOX marine-grade anti-salt spray cover (PC material, light transmittance ≥85%, no impact on equipment heat dissipation) outside the box, with drainage grooves reserved at the edge of the cover to prevent salt spray 积液 from adhering to the box surface.

2.Waterproof Sealing + Vibration-Resistant Fixation Enhancement

Multi-Sealing Design: Use fluororubber sealing strips (Shore hardness 60±5, resistant to seawater immersion) for box joints; install marine-specific waterproof cable glands (IP68 grade, suitable for 2-6mm² wires) at wiring holes; apply salt spray-resistant thread sealant on threads after tightening to double block seawater infiltration; spray nano anti-rust coating (thickness ≥50μm) inside the box to cover terminals and wiring parts, forming a corrosion isolation layer;
Vibration Resistance and Wiring: Fix the box through ZCEBOX marine buffer mounting bases (with built-in natural rubber buffer pads, thickness 12mm), reserve an 8mm buffer gap at the connection point with the hull to absorb navigation jolts and vibrations; route wires "along the hull keel direction", fix with marine corrosion-resistant cable ties (316L stainless steel material) every 35cm, control the bending radius to ≥12 times the wire diameter to avoid wire pulling and breaking caused by vibration; reserve 15cm wire redundant length (fixed in "U-shape") to adapt to hull deformation and displacement.

Adapting to the marine environment characteristics of marine shipping, balancing salt spray protection, waterproof sealing and vibration resistance, ensuring stable lines during navigation.

E-mail: sales@zcebox.com