STAUBLI AL-4A-39 64.2051-22
The STAUBLI AL-4A-39 is an in-line Ø4 mm plug for self-assembly of test leads. It is used when building a measuring lead from scratch and terminating it with a 4 mm plug that fits standard test equipment. Inside, there is a spring-loaded MULTILAM contact, which provides a stable contact surface during use.
The connection is made with a solder termination, so the plug can be mounted on the cable in a professional workshop or production environment. The contact surface is gold-plated, and the contact base is made of CuZn. This helps explain why this type of plug is often chosen for test leads where a reliable electrical connection and a compact design are desired.
The plug is rated for 30 V AC / 32 A and 60 V DC / 32 A. The outer diameter is 8.0 mm, and the accessories are specified according to IEC EN 61010-031, which is relevant in test and measurement equipment where safety and construction requirements apply.