Electrical Connection Cage Clamp With Screw
Products Description
Electrical Connection Cage Clamp with Screws (also known in the industry as box-type wire clamps or frame-type terminal blocks) are modular connectors pre-assembled by automated equipment from a precision metal cage and specific threaded or high-strength machine screws.
In traditional electrical assembly lines or on-site construction, workers need to manually pick up and assemble the screws and clamps separately. This is not only time-consuming but also prone to problems such as screws falling out, stripped threads, or missing washers. Our pre-assembled wire clamps completely revolutionize this model-the product is delivered in a completely integrated form and can be directly snapped into or welded to the conductor bars of switches and circuit breakers. This structure uses the immense mechanical clamping force generated by the downward rotation of the screws to firmly lock the external conductors (soft or hard wires) within the cavity of the wire clamp, forming a highly airtight, vibration-resistant surface contact connection.
Material Advantages: A Perfect Blend of Rigidity and Flexibility, Decoupling Conductivity and Strength
| Terminal Frame | High-Conductivity Lead-Free Brass/Copper Alloy: As the main channel for power transmission, the terminal frame uses high-quality high-conductivity copper alloy. It not only possesses extremely low volume resistivity, ensuring very low temperature rise under long-term operation with high current, but also, the inherent toughness of copper allows it to produce minute and uniform plastic deformation under the enormous tightening force of the clamp-style terminal strips, perfectly conforming to the irregular surface of the wire and eliminating initial contact gaps. |
| Fastening Screws | High-Strength Carbon Steel/Alloy Steel: As generators of mechanical force, Wire Clamp Terminal with Screws must possess extremely high tensile strength and shear strength. The high-quality steel we select undergoes quenching and tempering treatment, enabling it to withstand stringent tightening torques without tensile deformation or stripping. The rigidity of steel ensures sustained output of tightening force, compensating for the fatal flaw of pure copper screws being prone to deformation and slippage. |
| Collaborative surface treatment | The copper frame is tin-plated/nickel-plated to enhance its oxidation and corrosion resistance and reduce contact resistance; the Pre-Assembled Screw Wire Terminals are treated with environmentally friendly zinc-nickel alloy or carburizing to provide ultimate resistance to corrosion in salt spray and humid environments, preventing "lock-in" and torque decay. |
Manufacturing Advantages: Precision Stamping and Automated Assembly
Cold Forging and Precision Stamping Processes
Pre-Fitted Screw Terminal Clamps are cold-forged in multiple stations, with the threads strengthened through a roll forming process, resulting in tensile strength far exceeding that of machined screws. Wireframes are produced using high-tonnage precision high-speed stamping, ensuring that the lead angle tolerance is controlled within an extremely small range.
Pre-torque Setting
This is the soul of pre-assembled products. We apply precise pre-torque to each Zinc Alloy Screw Wire Terminal on our automated assembly line, achieving a state where it is "impossible to tighten by hand, but closes instantly with a tool." This not only prevents loosening during transportation but also enables "plug-and-play" functionality on our customers' production lines.
Consistent Surface Treatment
Steel Cage Screw Terminal Blocks and wireframes typically employ different plating strategies (e.g., rainbow zinc plating for screws, blue-white zinc or tin plating for wireframes). We have a fully automated selective electroplating line to ensure the optimal balance between the conductivity of the contact surfaces and the rust resistance of the screws.
Detailed Showcase: Engineering Dedication Hidden in Every Dimension
Screw Head Face
The Phillips or slotted screw head is precision cold-forged, resulting in a smooth, burr-free groove bottom. This ensures excellent screwdriver engagement, preventing stripping and runaway during high-frequency tightening with power tools.
Wire Frame Inner Wall
The threaded end features a smooth, rounded corner, eliminating stress concentration points. The bottom wire-pressing surface is microscopically smooth, free of any microscopic protrusions from stamping residue, ensuring even pressure on the wires and preventing the cutting of individual copper strands.
Pre-Assembly Gap
The Fuse Holder Screw Clamp Terminal rotates within the frame with uniform damping and no periodic jamming. When the pre-assembled parts are shaken, the screw exhibits no axial play, demonstrating extremely high thread pitch diameter fit precision.
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We not only provide standardized Electrical Connection Cage Clamp with Screw assemblies but also offer integrated engineering solutions based on customers' electrical structures, assembly methods, and automation requirements, from material selection and structural optimization to automated mass production, helping projects achieve more stable and efficient mass production.
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