Jera Line manufactures high‑performance Central Palm shearbolt lugs designed for 70–240 mm² aluminum and copper conductors. Engineered for medium‑voltage cable terminations, these mechanical lugs feature shear‑head bolt technology, ensuring controlled torque, and reliable electrical contact without the need for crimping tools.

All Jera Line Central Palm mechanical shearbolt lugs are IEC‑61238‑1 tested by the third party in dependent accredited Laboratory, confirming their electrical and mechanical performance for use in substations, switchgear, transformers, RMUs, and renewable energy systems. With corrosion‑resistant materials, precision machining, and strict quality control, Jera Line delivers utility‑grade connection solutions trusted by power companies and EPC contractors worldwide.

About the Product Centered Palm shearbolt lug 70-240 mm2

The CLB‑P‑VzT‑36‑2‑70-240 is an IEC‑61238 tested mechanical shearbolt lug designed for 70-240 mm² aluminum or copper conductors. Its stepless shear‑head bolt technology ensures uniform compression, controlled torque, and excellent electrical contact without the need for crimping tools.

Engineered for medium‑voltage applications, this lug is widely used in switchgear, RMUs, transformers, substations, and renewable energy systems.

Key Features

• High‑conductivity, tin‑plated aluminum body
• Centered palm design for secure and stable equipment mounting
• Wide conductor range: 70–240 mm²
• No crimping tools required—easy installation with standard wrenches
• Corrosion‑resistant and suitable for harsh outdoor or industrial environments
• Competitive pricing directly from our China‑based factory

IEC‑61238‑1 Type Testing

Jera Line’s Centered Palm Shear‑Head Bolt Lug 70–240 mm² has undergone the full IEC‑61238‑1 type‑test program to verify its electrical and mechanical performance under medium‑voltage operating conditions. These tests ensure that the lug provides long‑term reliability, stable conductivity, and safe installation in power distribution networks.

Electrical Type Tests

• Temperature Rise Test: Confirms that the lug maintains low electrical resistance and stable temperature under continuous rated current.
• High‑Current Cycling: Evaluates the connector’s ability to withstand thermal expansion, contraction, and repeated current surges without degradation.
• Contact Resistance Measurement: Ensures consistent, low‑resistance electrical contact between the conductor and lug body.

Mechanical Type Tests

• Conductor Pull‑Out / Tensile Strength Test: Verifies the mechanical grip strength of the shear‑head bolt system, ensuring the conductor remains securely fixed.
• Shear‑Head Bolt Torque Verification: Confirms proper shear‑off behavior, guaranteeing correct installation torque without the need for specialized tools.
• Mechanical Strength & Structural Integrity: Validates durability during installation and long‑term service.

Passing all these tests confirms that the CLB‑P‑VzT‑36‑2‑70‑240 centered palm shear‑head bolt lug meets the highest standards for utility‑grade MV connectors.

Why Choose Jera Line as your as your IEC‑61238 tested shearbolt lug supplier?

Power utilities and EPC contractors choose Jera Line because we offer:

• Reliable, type‑tested MV connection solutions
• Competitive pricing with consistent quality
• Fast production and global delivery
• Engineering support and customized solutions
• Long‑term product stability backed by rigorous testing

Our Central Palm shearbolt lugs are designed to perform in demanding environments, providing safe and dependable connections for critical power infrastructure.

If you have any inquires, please feel free to contact us.