<p>The MMS2 series key-operated switch is a robust and reliable choice for industrial and commercial applications. Crafted from durable metal, this non-illuminated switch is designed to withstand the rigors of demanding environments. With an operational temperature range of -30 to 70 degrees Celsius, it performs reliably in both cold and warm conditions.</p><p>This switch offers a high level of protection with its IP66 rating, ensuring resistance against dust ingress and powerful water jets. This makes it suitable for harsh industrial settings where exposure to such elements is common.</p><p>In terms of standards and approvals, the MMS2 series complies with CSA C22.2 No. 14, IEC/EN 60073, IEC/EN 60529, IEC/EN 60947-5-1, IEC/EN 60947-5-5, as well as UL 508 certifications. These endorsements assure users that the product meets international safety and performance requirements.</p><p>The connection type features a screw mechanism which provides secure electrical connections essential for stable operation in various setups. The rated insulation voltage stands at an impressive 690 V while the rated impulse withstand voltage is set at 4 kV – both indicative of its capacity to handle significant electrical loads without compromising safety or functionality.</p><p>Featuring a contact configuration of two normally open (2NO) contacts, this momentary function switch operates efficiently in circuits requiring transient engagement. It supports a rated thermal current of up to 10 A which aligns well with typical industrial use cases requiring moderate power handling capabilities.</p><p>The cutout size measures at a standard dimension of 22 mm facilitating easy installation into existing panels or systems without requiring extensive modifications. The actuator type being key-operated ensures added security by allowing only authorized personnel to operate the device.</p><p>For enhanced visibility in low-light conditions or specific application needs involving light indications, this model can be equipped with LED blocks although it remains fundamentally non-illuminated by design.</p><p>Overall maintained positions are marked as C and A providing flexibility based on user requirements or system configurations where different maintained states might be necessary over time due to operational demands or process changes within facilities using these switches extensively across diverse sectors like manufacturing plants warehouses etc., making them versatile components adaptable across multiple scenarios effectively supporting varied technical needs seamlessly within their specified parameters under normal usage conditions ensuring optimal performance longevity reliability throughout lifecycle usage periods expected from such equipment types typically deployed widely globally today particularly popular amongst professionals seeking dependable solutions balancing cost efficiency practicality together harmoniously achieved through thoughtful engineering design execution evident throughout every aspect examined here succinctly summarized above highlighting core attributes contributing significantly towards informed decision-making processes ultimately determining suitability alignment respective project objectives successfully met consistently delivered via MMS2 Series Switches confidently recommended accordingly MPN: MMS2</p>