Product category:
Industrial Drives/Controls
News Release from: Omron Electronics | Subject: D3V GWT unsealed switches
Edited by the Engineeringtalk Editorial
Team on 09 February 2006
Switches pass glow wire test
Miniature unsealed switches with glow wire test for use in household appliances such as vacuum cleaners, washing machines, dishwashers, refrigerators and tumble dryers.
Omron has improved its D3V family of miniature unsealed switches with GWT (glow wire test) approved versions to address safety, quality, efficiency and productivity requirements in domestic appliance applications Following the recent introduction of D3V-T high temperature versions, the D3V GWT versions are for use in household appliances such as vacuum cleaners, washing machines, dishwashers, refrigerators and tumble dryers
This article was originally published on Engineeringtalk on 8 Jul 2008 at 8.00am (UK)
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The GWT is an EN standard test evaluating the flammability of components when they reach high temperatures.
To pass, components must produce little or no visible flame when exposed to a hot wire of a specified temperature.
During tests on the D3V switches, all insulating materials within a distance of 3mm around the connector pins achieved a glow wire flammability index (GWFI) of 850C for a burning time of 30s, with no flames or glowing.
All parts passed the test for determining the glow wire ignition temperature (GWIT) with a glow wire temperature of at least 750C (GWIT 775C).
The D3V-W versions conform to IEC 60335-1 Ed 4 and EN 60695-2-11/12 Ed 2 regulations with standard EN 61058-1 requirements for components incorporated in household appliances and similar electrical applications.
There are available various operating forces, current ratings, lever options, fitting options and terminal types.
The V style switch suits most applications in the domestic appliance market.
A Rast 2.5 terminal type will be announced soon. Request a free brochure from Omron Electronics ...
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