The industry’s first range of motor starting solutions with push-in spring terminals speeds up wiring work, minimizes installation and commissioning issues, and provides more reliable long-term operation.
Stefan Roessler ABB Protection and Connection, Electrification Products, Heidelberg, Germany, stefan.roessler@de.abb.com
In motor applications, wiring is both time-consuming and a frequent source of problems – both during installation and later, when terminals must be re-tightened due to vibration.
ABB has launched the industry’s first range of motor starting solutions with push-in spring terminals that minimize these issues significantly. The innovative, tool-free connection concept speeds up wiring work and provides a vibration-resistant connection that makes operation more reliable.
ABB’s two-in-one design combines the advantages of push-in and spring technology in a single terminal to enable OEMs, panel builders and machine builders to speed up their installation work and improve reliability.
In push-in mode, rigid wires, or wires with ferrules, are simply pushed into the terminals, cutting wiring time by up to 50 percent compared to a conventional spring solution and making wiring significantly easier. The self-tightening terminals help eliminate problems caused by vibration, eg, terminals being vibrated open. There is no need for routine retightening work, which will positively impact the maintenance and service cycles.
Spring mode makes it simpler to insert small cross-section wires or wires without ferrules. The operator simply pushes a standard screwdriver into the clearly marked holes before inserting the wire. The design of the opening mechanism has been optimized with regard to wiring behavior and ergonomic aspects – eg, a 90° angle for the opening tool insertion. The one-step process makes ABB’s solution easier to use and less prone to damage than conventional spring designs.
The clearly marked terminals, an intuitive cable insertion concept and zero-torque connections mean that no special training is required. With easy front access and 90° insertion angles for cables and screwdrivers, automated assembly is facilitated and it is easy to connect accessories.
A wide range of compatible auxiliaries, mounting kits and accessories will be available. 100 percent tool-free mounting connecting kits significantly reduce installation time. Operators can connect devices for direct on-line starters without using any wires.
