Cage Clamp Terminal Blocks: China Sourcing Guide
1 resources tagged with "Cage Clamp"
Cage clamp terminal blocks use a spring-loaded cage to grip stranded wire without a screw, and from China they appear in DIN-rail terminal ranges alongside screw and spring-clamp types. The relevant standards are IEC 60947-7-1 for the connection and UL 508 for control-panel use — a block that lacks a genuine UL listing can stall a panel build destined for North America. Pitch (commonly 3.5mm, 5.0mm, 5.08mm) and rated current must match the conductor cross-section.
Sourcing cage clamp blocks means verifying the IEC 60947-7-1 and (for the US) UL 508 marks are real, and that the clamp holds rated pull-out force on stranded wire. The pitfall is a block rated for solid wire that loosens on vibration with stranded conductors — we run a pull test and confirm the pitch matches your busbar/jumper accessories.
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FAQ
What is the advantage of cage clamp over screw terminals?
Cage clamp connections are vibration-resistant and need no retorquing, which suits transport and machinery panels. Screw types remain common where field technicians expect them.
What should I verify on a Chinese cage clamp terminal block?
Confirm IEC 60947-7-1 and UL 508 listings are genuine, check the rated current against your wire gauge, and run a wire pull-out test on samples.
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