Products Description
A Steel Cage Screw Terminal Block is a standardized connection component consisting of a high-strength steel threaded clamping mechanism pre-assembled within a precision-stamped housing. Its primary function is to provide a mechanical and electrical connection interface-one that is securely reliable, compliant with safety standards, and capable of being repeatedly tightened or loosened-for connecting wires to electrical devices such as wall switches, circuit breakers, photovoltaic fuses, and relays. It serves not merely as a conduit for electrical current, but also as a critical safeguard for mechanical reliability under conditions involving prolonged vibration, temperature fluctuations, and operational stresses induced by user interaction.
Manufacturing Process
| Stamping and Forming | Steel strips for Screw Clamp Type Terminals are fed via an automatic feeder into a high-speed precision press, where a progressive die performs the blanking, bending, and forming of the cage. |
| Heat Treatment | Following the stamping process, the Wire Clamp Terminal with Screw undergo quenching (to enhance hardness and strength) and tempering (to relieve internal stresses and impart toughness) within a controlled-atmosphere furnace. |
| Surface Treatment | Utilizing either barrel plating or rack plating lines, the parts undergo a sequence of processes including degreasing, acid pickling, electroplating, passivation, and drying. |
| Automated Pre-assembly | Coordinated by a vibratory feeder and robotic arm, components such as screws and washers are automatically assembled onto the Pre-Assembled Screw Wire Terminal; a precision torque driver is then employed to apply a preset initial preload or to complete the riveting process. |
Design Advantages
Standardized Interface Compatibility
The external dimensions of the Cage Clamp Screw Terminal are designed to match the terminal cavities of mainstream molded-case circuit breakers and wall switches, offering versatile compatibility solutions for various pole configurations (e.g., 2P, 3P, 4P).
Customizable Wire Gauge Range
A single frame size accommodates wire gauges ranging from 1.5 mm² to 6 mm², achieved through precise adjustments to the screw travel and the internal cavity height of the Pre-Assembled Screw Clamp Terminal.
Multiple Plating Options
Four distinct surface treatment solutions are available for Pre-Fitted Screw Terminal Clamp: White Zinc (standard indoor use), Color Zinc (decorative finish), Nickel Plating (industrial environments), and Dacromet (high-salt-spray environments).
Product Customization Process
What is the core advantage of Integrated Screw Clamp Terminal compared with single‑point pressure plate terminals?
The core advantage is its multi-point elastic clamping and vibration resistance. Single-point pressure plates are prone to localized stress, wire core damage, and long-term loosening; the cage structure evenly wraps the conductor at multiple points, elastically buffering creep and making the connection more stable under vibration.
Why pre‑assemble for Wire Clamp Terminal with Screw?
Pre-assembly simplifies the terminal assembly process, reduces component loss and manual matching deviations, adapts to mass production with automated equipment, and ensures consistent pre-assembly torque for each product.
Can Cage Clamp Screw Terminal be used for photovoltaic fuse wiring outdoors?
Yes. The product undergoes galvanizing for rust prevention, providing basic corrosion resistance and suitable for typical outdoor photovoltaic applications; for high salt spray environments, a thicker galvanized version can be selected to enhance the protection level.
contact us
If you are seeking a supplier of Steel Cage Screw Terminal Block that offers stable performance and exquisite craftsmanship-or if you have specific requirements for custom designs based on technical drawings-please feel free to contact us at any time. Our engineering team is ready to provide you with expert guidance on product selection and full support regarding samples.
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