<p>When selecting a robust and reliable control component for industrial or commercial applications, the MMS2 series key-operated switch stands out as a solid choice. Designed with practicality in mind, this non-illuminated switch offers dependable performance across various demanding environments.</p><p>Constructed from durable metal, the MMS2 series is built to withstand harsh conditions, boasting an impressive operational temperature range of -30 to 70 degrees Celsius. This ensures that it remains functional in both extreme cold and heat, making it suitable for diverse Australian climates.</p><p>The switch is protected by an IP66 degree of protection rating, indicating its resilience against dust ingress and powerful water jets. This makes it particularly advantageous for use in settings where exposure to such elements is common.</p><p>From a standards perspective, the MMS2 series meets several international approvals including CSA C22.2 No. 14, IEC/EN 60073, IEC/EN 60529, IEC/EN 60947-5-1, IEC/EN 60947-5-5, and UL 508. These certifications affirm its compliance with stringent safety and performance criteria.</p><p>Connection to the switch is facilitated through Faston terminals which are known for their ease of use and secure connections. The rated insulation voltage of this device is at a high level of 690 V while also offering a rated impulse withstand voltage of 4 kV.</p><p>One notable feature is its contact configuration—1NC (normally closed) which can be crucial depending on your circuit requirements. The actuator type being key-operated provides added security by ensuring only authorized personnel can operate the switch.</p><p>Functionally designed with maintained action in positions A and C, it holds its state until manually changed—a vital feature for certain control systems requiring stable operation without constant manual intervention.</p><p>The cutout size measures at a standard diameter of 22 mm allowing straightforward installation into panels or enclosures commonly used within industry setups. Additionally, despite being non-illuminated itself; when illumination is needed elsewhere within your system; compatible LED light blocks can be integrated seamlessly due to its design compatibility.</p><p>With these technical specifications in mind—the MMS2 series proves itself as not just another component but rather an integral part that enhances overall system reliability while adhering strictly to necessary safety standards—an essential consideration when planning any electrical setup or upgrade involving maintained position switches like this one.</p>