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Product category: Connectors, Terminals, Busbars and Slip Rings
News Release from: Ter-mate | Subject: MMX range
Edited by the Engineeringtalk Editorial Team on 23 November 2007

Withdrawable units aid MCC design

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MMX withdrawable units can be used in assemblies with fully tested horizontal busbars rated at up to 3200A.

The challenging tasks of designing and producing fault-rated withdrawable motor control centres (MCCs) are now made simple by the latest MMX range of withdrawable units from Ter-mate Designed to fit easily into the user's own steelwork, the units are ASTA certified with a fault rating of 50kA for 1s, and can be equipped with control gear of the user's choice

Manufactured in the UK under stringent quality control procedures, MMX drawer units are available in four heights - 160, 24m, 320 and 480mm.

All types are supplied complete with slide rails, shutter assembly and auxiliary contact mounting rails.

Outgoing power plugs rated from 50 to 400A can be used, and up to 38 auxiliary contacts per drawer can be fitted.

Extensive safety features are incorporated as standard, such as positively driven snap-action shutters, which provide IP3X protection for the busbars when the unit is not in the service position.

The slide rails have the fully engaged, test and fully withdrawn positions clearly marked, with the test position being a particularly convenient feature that allows the control circuits to be tested in complete safety.

In addition, a padlockable maintenance safety device is provided to prevent trays being reinserted while work is being carried out on the system.

Compatible with selected products from Ter-mate's renowned Master Frame busbar system, all of which carry the coveted ASTA Diamond Mark, MMX withdrawable units can be used in assemblies with fully tested horizontal busbars rated at up to 3200A.

An additional benefit is that Master Frame busbars are approved by Lloyds, which means that assemblies produced with MMX withdrawable units are ideally suited for marine as well as land-based applications.

Withdrawable MCCs have many benefits - they offer increased flexibility and safety, while dramatically reducing downtime as, in the event of a fault, a drawer can be replaced almost instantly by a fully wired spare.

This makes them ideal for use in process-critical production applications.

In the past, it has been difficult and costly for panel builders to produce withdrawable assemblies, but Ter-mate's MMX system has now fully addressed these issues.

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