Klauke 231R Aluminium Tubular Cable Lug 185 mm², M12 Bolt, Straight Barrel

Electricians and panel builders working on aluminium conductors in industrial switchgear and control panels rely on the Klauke 231R tubular cable lug to create durable, low-resistance terminations. This straight-barrel lug is precision-formed from high-purity aluminium, ensuring an optimal match with aluminium cables rated at 185 mm² cross-section. The barrel's inner diameter of 18.3 mm allows easy insertion of the conductor, while the 13 mm bolt hole accommodates M12 fasteners for secure mechanical and electrical connections. An inspection hole in the palm confirms full conductor insertion before crimping, reducing installation errors. The untreated surface provides a clean, oxide-free base for professional crimping with Klauke tools, delivering gas-tight joints that withstand vibration and thermal cycling.

Key specifications

• Material: Aluminium
• Conductor cross-section: 185 mm²
• Bolt hole diameter: 13 mm (M12 compatible)
• Barrel inner diameter: 18.3 mm
• Barrel outer diameter: 28.5 mm
• Overall length: 92 mm
• Palm width: 32 mm
• Palm thickness: 4 mm
• Design: Straight barrel with inspection hole
• Connection type: Crimp
• Recommended crimp tools: Klauke K305, K306, K307, K308 with appropriate dies

Why choose it

The Klauke 231R is engineered for reliable performance in aluminium cable terminations. Its seamless aluminium construction prevents galvanic corrosion when paired with aluminium conductors, maintaining low contact resistance over decades of service. The inspection hole offers visual confirmation of proper conductor insertion, ensuring consistent crimp quality. Compatible with a range of Klauke crimping tools, this lug simplifies installation while meeting professional standards.

Ideal use cases

• Terminating aluminium cables in industrial switchgear
• Control panel wiring for heavy machinery
• Power distribution systems requiring M12 bolted connections
• Retrofit and maintenance of aluminium conductor installations

Good to know

For optimal results, use Klauke crimping tools with appropriate dies. The untreated surface should be cleaned and prepared according to standard practices before crimping. Always verify conductor insertion through the inspection hole prior to compression.