Tesla Powerwall – 1875157-40-C – Harness 4M, PW3 Expansion

Tesla Powerwall 3 — 4 m Expansion Harness

Connect your Powerwall 3 Expansion system with the Tesla 4 m Expansion Harness (1875157-40-C). This cable connects a compatible Powerwall 3 to an Expansion unit, or links two Expansion units.

Its extended reach accommodates wall-mounted layouts requiring greater separation between units. Factory connectors provide dedicated DC power and communication connections.

This listing includes one harness only. Powerwall equipment, mounting kits, and cable-management straps are separate.

Key Features

• Extended Reach: 4-meter cable for approved wall-mounted Expansion layouts.
• Factory Connections: Purpose-built connectors at both ends.
• Durable Jacket: TPE construction resists moisture, UV exposure, and flame.
• Indoor or Outdoor Use: Suitable when installed according to Tesla requirements.

Typical Applications

• Connecting wall-mounted Powerwall 3 Expansion equipment.
• Replacing a damaged harness.
• Accommodating wider equipment spacing in an approved installation.

Product Details

Installation & Compatibility

Have a qualified installer verify equipment compatibility, the permitted harness combination, and the complete cable route. Secure the cable using Tesla-specified straps and maintain the minimum bend radius. Do not splice, modify, or route the harness through a wall or partition.