Screw Clamp Terminal Blocks
Products Description
Screw Clamp Terminal Blocks are essentially integrated components that combine conductive connections and mechanical fastening. Their core design is not simply "screw + metal plate," but rather a system optimisation around the following three points:
Conductive path stability: The junction box's covering structure increases the contact area and reduces contact resistance.
Clamping force uniformity: Screw pressure is distributed evenly throughout the structure, preventing loosening or overheating caused by point contact.
Assembly efficiency optimisation: Pre-assembled design reduces secondary assembly steps for end customers.
Typical structures include:
High-precision screws (carbon steel or stainless steel)
Stamped junction box (copper/brass/plated copper)
Anti-loosening structure (optional)
This structure makes it highly versatile in low- and medium-voltage electrical connection scenarios.
Design Advantages: Stress Distribution and Anti-Loosening Logic
Scientific Frame Deformation Compensation
Our junction box design fully considers the thermal expansion and contraction of metals. The frame undergoes slight elastic deformation when Clamp Terminal Blocks are tightened; this "spring effect" compensates for pressure drops caused by changes in ambient temperature or wire creep, maintaining long-term contact tightness.
Anti-Slip and Anti-Self-Loosening Design
The frame's internal design incorporates fine transverse anti-slip ribs, increasing friction and effectively preventing large-section wires from slipping under stress.
Screw Anti-Loosening Technology
Pre-assembly ensures that Screw Connector Blocks will not fall out during transportation or inverted installation when not tightened, greatly improving the end-customer's assembly experience.
Main Functions: Mechanical-Electrical Dual Realisation of Electrical Connections
Mechanical Clamping
The Screw Block Terminal helical mechanism converts rotational motion into a linear clamping force, simultaneously establishing mechanical fixation and electrical contact pressure for the wires.
Electrical Conductivity
The frame acts as a current carrier, guiding the contact current at the clamping point to the PCB or busbar inside the equipment. The copper material ensures low resistance and high thermal conductivity.
Maintainability
Electrical Screw Terminal connections support multiple disassembly and reassembly in the field, facilitating equipment debugging, maintenance, and wiring changes, unlike non-removable crimping or soldering solutions.
Multi-Wire Management
Some frame designs support dual-wire clamping, enabling bridging, tapping, or redundant connections, simplifying the internal wiring structure.
Details & Quality Assurance
Thread Quality: Smooth, burr-free edges ensure a clear and responsive manual locking feel.
Chamfered Design: The cable entry point on the frame features a user-friendly chamfered design, allowing for smooth cable insertion even in dimly lit or cramped electrical boxes.
Customised Marking: Brand or specification laser marking can be applied to the frame surface upon request for the Screw Lug Terminal.
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If you are looking for a more stable and scalable connection solution for switchgear, circuit breakers, or new energy systems, we can provide highly compatible Screw Clamp Type Terminals engineering solutions based on your structural design and application requirements.
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