Terminal clamp screw-type 300A 70 mm² GRAPHITE 56H892

The GRAPHITE screw-type terminal clamp rated at 300 A and suitable for conductors up to 70 mm² is designed for secure bolted electrical connections in heavy-current installations. This terminal clamp is intended for reliable termination of battery leads, power distribution conductors and other high-current wiring where a compact, firm and conductive connection is required. The product is built from conductive metal with an insulated housing designed to withstand workshop, automotive and industrial environments.

Advantages

The screw-type design enables a tight mechanical and electrical connection without the need for special tools beyond standard spanners and screwdrivers. Rated for 300 A and compatible with up to 70 mm² conductors, the clamp supports high-current applications while keeping a compact footprint for installations where space is limited. Corrosion-resistant contact surfaces and a robust body provide long-term stability in repeated connection cycles and under vibration conditions typical for automotive or industrial use.

Suitable for

• Battery terminals and starter battery connections
• Power distribution bars and main feed connections
• Heavy-current wiring in workshops and industrial panels
• Automotive, marine or stationary applications requiring secure high-current termination

When it may not be suitable

The clamp is not intended for fine-stranded micro conductors or very small gauge wires below the specified cross-section range, and using undersized conductors can cause poor contact and overheating. It is not a substitute for fused or protected circuit components and should be used as part of an appropriate electrical system design with correct overcurrent protection.

Key specifications

• Current rating: 300 A
• Maximum conductor cross-section: 70 mm²
• Connection type: screw/bolted terminal
• Material: conductive metal contact with insulating housing
• Typical applications: battery and power distribution terminations

How to use

Strip the conductor insulation to the appropriate length for the clamp’s seating area, insert the conductor into the terminal opening and secure it by tightening the screw to the manufacturer-recommended torque. Ensure the conductor is fully seated and that the screw is tightened evenly to achieve a flat, secure contact without deforming the conductor. After installation, check for good mechanical retention and verify electrical continuity. Periodic inspection and retightening may be required in high-vibration environments.

What to consider before purchase

• Verify that the conductor cross-section does not exceed 70 mm² and is suitable for a 300 A rating
• Confirm compatibility with the conductor type (stranded vs. solid) and insulation removal method
• Ensure available space and mounting orientation fit the clamp’s dimensions and intended wiring layout
• Plan for appropriate overcurrent protection and system grounding as required by application

Usage recommendations

Use an appropriate torque setting when tightening the screw to avoid loosening in vibration-prone environments and to maintain reliable electrical contact. Apply corrosion protection measures where applicable and perform routine inspections to ensure continued performance.