MC4 Connector Holder for Reliable Solar DC Installations

Solar DC connectors are a critical interface in every photovoltaic system.

Improper cable routing, excessive bending or exposed connectors can lead to failures, safety risks and costly downtime.

Unsecured DC connectors are often:

• Exposed to sun, rain, ice and water
• Subject to excessive cable bending and kinking
• Installed inconsistently depending on on-site conditions

Engineered for secure, tool‑free installation

The holder is designed for MC4 and MC4 Evo 2 compatible solar connectors and

features two integrated EdgeClips that simply push onto standard aluminium module frame edges –

by hand, without tools.

• Push-fit installation onto module edges (1.0–3.0 mm)
• Connector inserted by simple push‑in action
• Non-destructive release of the connector for service access

• Prevents excessive cable bending and kinking

• Maintains 20 mm straight cable length on both connector ends, according to Stäubli installation instruction

• Defined distance between connector and earthed metal

• Reduced fire risk and increased safety for technicians and animals

• Protection Against Environmental Exposure: not longer exposed to UV radiation, rain, ice or standing water

• No submerging of DC connectors

• The holders support visual and drone-based inspections thanks to defined connector positioning

• Improves maintenance efficiency and fault detection

• Helps reduce downtime and long-term service costs

• Technical Compatibility with crimp-only Stäubli MC4 and MC4 Evo 2 connectors

• Suitable for DC cable sizes: 4, 6 and 10 mm²

• Fits inside module frames with only 22 mm clearance

• Fully compatible with 35 mm standard module frame height

• Can also be mounted on the outside for smaller frame designs