mainly used in MCCBs for setting essential parameters, such as the trip current. The RTE is available with a choice of 4, 10 or 16 positions, and the output can be specified to be BCD, Gray code, hexadecimal code or a simple single-pole output, depending on the needs of the application. TM series – miniature snap-acting

switches: The UL-rated TM series forms the basis of many customised snap-in solutions for switches that are used in MCCBs to show that the MCCB has tripped. The single-pole, momentary-action

switches are rated at 15A at 250V AC and are available in SPST and SPDT configurations. Lower-current versions with gold-plated contacts are also available. Designers can specify both the operating force (three options) and the pivot position of the actuator, as well as the type of actuator (lever, lever roller, pin roller or simulated roller) to suit the mechanical needs of almost any application.

GROWING INTELLIGENCE MCCBs are becoming more intelligent and able to provide monitoring and management functions as part of Factory 4.0 installations. However, these thermal- electromechanical devices rely heavily on mechanical switches to perform vital functions such as setting key parameters and providing notification of tripping. When designers are selecting switches for applications such as MCCBs, two things are key: reliability in harsh environments, and the ability to have customisation performed to suit the application.

C&K Switches


With outside temperatures dropping, you’ll probably no longer hear the alarms on your cooling units. But, while this is likely to mean you’re spending less time maintaining overheating panels, it would be a mistake to forget about climate control. This, however, is actually

the best time of year to turn your mind to your enclosures, carry out a climate review, and start to understand what changes or improvements need to be made. Last summer, things were very different. Fans and filters weren’t cutting it as the ambient temperature

in the workplace was higher than you wanted inside your enclosures! Now that everything has settled down, it’s worth assessing any problem enclosures and making the necessary changes. It’s important to remember that every degree above your set-point will be time removed from the life of expensive equipment such as PLCs, variable speed drives and transformers. Collectively, this can easily have a replacement value that tops £100k, even in a relatively small setup. If only 2% of that equipment is replaced each year because of burnt-out componentry, then the costs can quickly mount up. There are also the add-on operations costs caused by componentry breaking down and stopping

the processes it controls. This lost output will continue for as long as it takes to repair the fault, and is bound to have consequences for your wider business, impacting productivity and efficiency, and thereby reducing profits. Correct climate control is often overlooked during the installation of electronic equipment because the

focus is all on the equipment, not on regulating the environment that it operates within. This is where Rittal can help. With its RiAssure service, a trained member of staff will provide a free

Cooling Review – a short visual inspection of your existing enclosures and cooling equipment. From this, it can ascertain the next best step for your equipment and also provide ongoing, best practice, suggestions so that your operations benefit from increased longevity, life and profit.


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