Hager KS18A S-Rail Clamp 35-120 mm², for 12x5/10 mm Busbars

In power distribution and industrial control panels, connecting large conductors to busbars often requires bulky, unreliable adapters. The Hager KS18A S-Rail Clamp solves this by providing a direct, screw-terminal connection for conductors from 35 to 120 mm² onto 12x5 mm or 12x10 mm busbars, ensuring a secure and low-resistance joint without additional hardware.

Who is it for

This clamp is intended for electrical panel builders, industrial electricians, and maintenance technicians who need to terminate rigid or flexible copper conductors onto S-rail busbars in low-voltage distribution systems. It is suitable for applications up to 1000 V AC or 1500 V DC, making it versatile for both AC and DC installations.

Main features

• Accepts conductors from 35 to 120 mm², both rigid and flexible.
• Compatible with busbar dimensions 12x5 mm and 12x10 mm.
• Single-pole screw terminal with 12 Nm tightening torque for reliable clamping.
• Rated for 1000 V AC / 1500 V DC operational voltage.
• Insulation made of grey polyamide (PA), UL94 V-0 flammability rated.
• Contact material: tinned copper for excellent conductivity and corrosion resistance.
• Degree of protection IP20, suitable for enclosed panels.
• Operating temperature range: -25°C to +70°C.
• Complies with IEC/EN 60947-7-1 standards.

Specifications

• Brand: Hager
• Model: KS18A
• MPN: KS18A
• EAN: 3250613890162
• Product type: Busbar terminal clamp
• Conductor cross-section: 35 - 120 mm²
• Conductor type: Rigid and flexible
• Busbar compatibility: 12 x 5 mm / 12 x 10 mm
• Number of poles: 1
• Connection method: Screw terminal
• Mounting: Direct busbar mounting
• Rated voltage: 1000 V AC / 1500 V DC
• Insulation material: Polyamide (PA)
• Contact material: Tinned copper
• Colour: Grey
• Tightening torque: 12 Nm
• Standards: IEC/EN 60947-7-1
• Degree of protection: IP20
• Operating temperature: -25°C to +70°C
• Flammability rating: UL94 V-0
• Application: Power distribution, industrial control

Tips

Ensure the busbar and conductor are clean before installation. Use a calibrated torque wrench set to 12 Nm to avoid under- or over-tightening. For flexible conductors, use ferrules to prevent strand breakage and achieve optimal contact. Always de-energize the panel before installation.