Sparks Electrical News February 2019

DBS, SWITCHES, SOCKETS AND PROTECTION

11

COMPACT CONTACTOR SOLUTIONS

E ngineered to provide a compact contactor solution, the WEG CWB range of devices offers a width space saving of up to 18%. Developed in two frame sizes, the contactors meet a range of industrial and domestic application requirements. The first contactor in the range, covering up to 38 A, has a width of only 45 mm while the second contactor, ranging from 40 to 80 A, has a width of 54 mm. Two mounting options, standard DIN rail or oblong mounting holes makes interchangeability easy. Significantly, the space saving allows the use six contactors where previously only five could be used. Another innovative engineering feature is the use of WEG’s Zero-Width mechanical interlocking system. Traditionally contactors use a mechanical interlock device which is external to the contactor. The Zero-Width system facilitates quick and easy mechanical interlocking between contactors, without the need for tools. In addition, this feature allows the user to build a reversing starter up to 38 A with a total width of only 90 mm. IP66 SEALED ENCLOSURES FOR INDUSTRIAL APPLICATIONS O ptimised for use in harsh industrial en- vironments, the 1554 flat lid and 1555 styled lid ranges of ABS and UV stabilised polycarbonate enclosures from Hammond Manu- facturing provide IP66 sealing and good mechani- cal protection. The light grey RAL 7035 enclosures are designed to house printed circuit boards or DIN rail mounted components. IP66 sealing is achieved through a one piece silicone gasket in a tongue and groove seal. 23 sizes from 66 x 66 x 41 mm to 239 x 160 x 119 mm are available with flat and styled self-coloured, clear and translucent lids. Flanged lids for 10 sizes, from 119 x 66 x 42 mm to 180 x 119 x 62 mm, provide increased security by preventing ac- cess to the interior without removing the enclosure from the surface to which it is attached. The styled lids include a recess suitable for mount- ing a membrane keyboard and are also fitted with PCB mounting bosses. Bases are fitted with internal DIN rail mounting tabs in all but two sizes and stand- offs for mounting PCBs or optional internal panels are provided in all versions. To avoid any possible corrosion problems the base inserts and self-captivating lid screws are both stainless steel, located outside the gasket; additional holes in the base, again outside the gasket seal are provided to allow the enclosure to be wall or shelf mounted. An optional foot kit is also available. Op- tional steel panels suitable for mounting heavy com- ponents can be fitted to the integral mounting points in the base; the bases also feature moulded slots to enable 1.6 mm thick PCBs to be mounted vertically into the enclosure. Available in South Africa through Mouser Electronics.

Built-in front auxiliary contacts not only enhance the space saving benefit, but also eliminate the need to purchase additional auxiliary contacts. This feature also offers greater flexibility as it facilitates optimisation of the internal space in electrical panels. In another innovation, the contactors have been engineered with integral surge suppressor blocks without increasing the physical size of the devices. This limits undesired interference which could be caused during the opening of the contactor coils and allows for the front mount surge suppressor to be easily removed without the use of special tools. Energy saving is achieved through the low consumption of the coils, which allows direct switching from PLCs without the need for interface

network, the WEG CWB range of contactors affords customers a high level of flexibility.

relays. This facilitates both space and cost savings for the end-user. Available at competitive pricing from Zest WEG Group’s branches and national distributor

Enquiries: +27 (0)11 723 6000

Enquiries: www.mouser.co.za

SPARKS ELECTRICAL NEWS

FEBRUARY 2019