Electricity + Control April 2019

round up ELECTRICAL PROTECTION + SAFETY

M12 connectors with UL listing for safe wiring

vibration and after numerous operating years with possible material fatigue in the copper wires, a constant pressure and therefore optimum, safe and unin- terrupted contact is guaranteed. Enquiries: LÜTZE Systemtechnik GmbH.Wolfram Hofelich, email: wolfram.hofelich@luetze.de or visit www.lutze.com

Automation specialist LÜTZE, based in Weinstadt, Germany, has supplemented its prefabricated M12 connectors with UL listing (cURus), now meeting safety requirements for the North American market. The LÜTZE M12 connectors with push-in technology offer a number of advantages for control cabinet, machine and plant manufacturers because they allow fast and fault-free wiring of prefab- ricated cables. The tool-free and direct connection, which does not require pre- vious opening of the contact point, guar- antees fast wiring. With the new push-in technology, the insertion forces are low, which simplifies the connection. In con- trast, the pull-out forces are higher, so all connections provide a high level of wir- ing security. Depending on the application, the M12 connectors are suitable for trans- ferring signals, data and power in vari-

ous versions. These include a straight or angled connector, with the option of shielded or unshielded versions. The an- gled version allows the cable outlet to be positioned in 45° steps compared to the pole pattern. The new connectors have the same design as the screw terminal technology and are designed for more than 100 plug cycles. The company uses a clear colour- coding system for the wires during as- sembly. All colours in the connection block are assigned for the actuator sen- sor area and for the fieldbus wiring such as CAN-Bus, Profibus, Ethernet and Profinet, according to the corresponding standards in EN 60947-5-2. This means firstly, that it is almost impossible to con- fuse the pins and, secondly, there is no need for time-consuming and error-prone recoding of the individual colour codes. A permanent spring pushes each wire back so that, even in the event of heavy

The M12 connector range now has a UL listing.

Electricity + Control

APRIL 2019

15