Contactor Screw Wire Clamp Terminal
Products Description
The Contactor Screw Wire Clamp Terminal mainly consists of the following parts:
Precision Screw
Wire Clamp
Metal Pressure Cage
Conductive Clamping Structure
Pre-assembled Fastening Unit
Through an automated pre-assembly process, the screw and wire clamp are integrated into a complete assembly. Customers do not need to perform secondary assembly during subsequent overall assembly; it can be installed and used directly, significantly improving assembly efficiency and reducing the risk of missing components.
Core Application Scenarios and Compatibility Advantages
Intelligent Wall Switches and Building Power Distribution Systems
Withstands long-term, high-frequency current surges, providing standardised and robust connections within compact spaces to ensure absolute safety in residential power distribution.
Industrial-Grade Wiring Switches and Control Cabinets
Copes with mechanical vibrations in automated production lines, preventing wiring from loosening due to minor vibrations.
Moulded Case Circuit Breakers (MCCBs)
Maintains the wire frame structure without deformation or fusion under extreme conditions such as high current and short-circuit breaking, firmly securing large-diameter cables.
Photovoltaic Fuses and Energy Storage Systems
Optimised for DC high-voltage environments, resists harsh outdoor temperature variations and UV ageing, comprehensively reducing maintenance costs throughout the entire lifecycle.
Detail Showcase: The Essence Lies in the Details
Rounded Screw Head Chamfer
The screw drive slot edge is precisely chamfered, facilitating automatic screwdriver alignment and effectively preventing slippage and chipping during assembly, extending the lifespan of assembly tools.
01
Anti-slip Dot Matrix on the Inner Wall of the Terminal Frame
Under a microscope, a uniformly distributed dot matrix texture is visible in the wire clamping area of the C45 Circuit Breaker Screw Terminal frame. This texture subtly embeds the wire when it is clamped, increasing the coefficient of friction and providing additional anti-loosening redundancy.
02
Rounded Corner Transition for Thread Root Diameter
The screw thread root diameter is not a sharp V-shape, but rather an optimised rounded corner transition. This significantly reduces stress concentration and avoids the risk of thread root cracking under repeated torque.
03
Flared Opening Design of the Frame
The Circuit Breaker Terminal frame inlet features a slightly flared, funnel-like expansion design, which greatly reduces the difficulty for operators to insert multiple wires into the frame and improves the smoothness of assembly line work.
04
Production Process
Screw Cold Heading
Six-station forward and reverse extrusion forming, head shape (Phillips/Torch/Hexagon) is achieved in one step, without machining burrs.
01
Handling Frame Multi-Stage Stamping
Punched from a continuous die on a copper strip, threaded holes and outer shape are completed simultaneously, with a positional tolerance of ±0.03mm.
02
Thread Machining
Steel Cage Screw Terminal Block. Using extrusion taps (chip-free forming), the thread strength is 30% higher than with cutting taps, and the surface is smoother.
03
Surface Treatment
Fully automated barrel plating line, uniform film thickness, salt spray inspection for each batch.
04
Pre-assembly and Inspection
Dedicated vibratory feeder + rotating jaws automatically assemble screws. After assembly, optical screening checks for screw placement and thread damage; followed by a torque drop test (component inverted and vibrated for 30 seconds, screw drop rate 0%).
05
contact us
We can provide integrated engineering support, from structural optimisation and mould development to automated pre-assembly and mass production, based on the circuit breaker structure, switch assembly method, and new energy electrical application requirements of our customers, to help Fuse Holder Screw Clamp Terminals achieve higher assembly efficiency and long-term connection reliability.
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