Cage Clamp Screw Terminal
Products Description
A Cage Clamp Screw Terminal typically consists of the following components:
Precision screws
Metal clamp cage
Conductive tabs or a wire clamping structure
Anti-loosening structure components
Pre-assembled connection mechanism
The product undergoes automated pre-assembly to form a complete wiring unit, which can be directly installed inside electrical equipment to secure and conductively connect external wires.
Its core working principle is that the screw tightening drives the clamp cage to clamp the wire, ensuring reliable contact between the wire and the conductive end under stable pressure, thereby guaranteeing stable current transmission.
Main Functions
Wire Entry and Mechanical Anchoring
Serving as the physical interface between the appliance casing and external wiring, Pre-Assembled Screw Clamp Terminal securely locks building wiring or equipment cables inside the appliance, preventing accidental loosening due to pulling, vibration, or thermal expansion and contraction.
Current Bridging Interface Establishment
Through the dense contact points formed by the cage clamp, a low-resistance path is established from the wire to the internal conductive circuit of the appliance, carrying the rated operating current and short-time overload current.
Multi-Specification Wire Compatibility
The same cage structure can accommodate wires of different cross-sectional areas by adjusting the Wire Clamp Terminal with Screw travel, reducing the pressure on appliance manufacturers to stock multiple terminal specifications due to differences in export markets.
Maintenance Support
During equipment maintenance or wiring modifications, the Pre-Assembled Screw Wire Terminal supports multiple disassembly and reassembly without significant deterioration of clamping performance, extending the maintenance cycle of the appliance itself.
Design Advantages: Topological Reconstruction for Combating Loosening and Reducing Resistance
| Anti-Loosening Dynamic Thread Design | Optimized thread profile angle and pitch create a self-locking wedging effect at the screw-frame meshing surface. When encountering external vibrations or short-circuit electrodynamic impacts, the frictional damping between the threads absorbs vibration energy, preventing the Pre-Fitted Screw Terminal Clamp from retracting and completely solving the industry-wide problem of "thermal cycle loosening." |
| Anti-Shear Curved Surface at the Wire Clamping Bottom | The clamping area of the frame abandons sharp planar edges, adopting an optimized micro-arc curved surface design. When clamping multi-strand wires, the curved surface distributes the clamping force more evenly across the conductor cross-section, avoiding localized stress concentration that could cut the conductor strands. Integrated Screw Clamp Terminal also increases the effective contact area, significantly reducing contact resistance. |
| Strengthening Rib Topology on the Frame Side Walls | For frames such as MCCBs that need to carry high currents and thick wire diameters, the side walls are designed with micro-reinforcing ribs. These reinforcing ribs significantly increase the frame's resistance to bulging without increasing the overall volume and weight, preventing the plastic shell from cracking or the leakage distance from shortening due to outward expansion of the frame under extreme torque. |
Manufacturing Advantages: System-Level Control to Eliminate Discrepancies
The biggest pain point for engineering clients is the significant difference in assembly feel, even within the same batch of wiring harnesses. Our manufacturing advantage lies in "eliminating discrepancies."
Predictive Compensation for Die Life: Dies for stamping frames experience micro-wear with each stamping cycle. We use an online visual inspection and dimensional measurement system to track the dimensions of the bottom hole and pressure line in real time, and proactively adjust the press closing height during the sharpening cycle to achieve predictive compensation for dimensional drift, ensuring high consistency across millions of production runs.
Comprehensive Torque Database: Pre-assembly torque data for each batch of Galvanized Steel Screw Terminal Clamp is fully recorded and linked to the batch code. Engineering clients can access our database during final assembly and match it with the parameters of their own electric screwdrivers for optimization, achieving seamless integration of upstream and downstream processes.
Zero Tolerance System for Micro-Defects: We employ high-magnification optical screening machines for 100% visual inspection to address potential issues such as stamping burrs and micro-threading. We understand that even a tiny stamping burr can be the starting point for creepage arcing in a high-voltage insulation system.
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We not only provide standardized Steel Cage Screw Terminal Block products, but also offer integrated engineering solutions based on customers' electrical structure, assembly methods, and end-application requirements. These solutions range from structural optimization and material matching to automated mass production support, helping projects achieve more stable and efficient long-term supply support.
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