Microswitch — key specifications and benefits Function: Single-pole microswitch with one normally open contact (1NO) for straightforward on/off switching. Electrical rating: Rated for 4 A at 250 V AC — suitable for low-to-moderate AC loads and signal circuits. Mounting size: Bezel (panel cutout) 19 mm — compact panel-mount form factor that fits a standard 19 mm hole. Company type: supplied by an independent company (selbständig). Why this microswitch matters Clear, safe performance: The 4A/250V rating gives you a defined, reliable limit for circuit design and load selection, reducing guesswork when replacing or specifying switches. Easy panel integration: The 19 mm bezel allows fast installation into control panels, instrument faces, or enclosures without custom machining. Simple wiring and control: A single normally open contact simplifies wiring for basic on/off functions and minimizes wiring errors. Compatibility and practical details Function compatibility: Use where a single closing contact is required (momentary or maintained as appropriate for your wiring). Electrical compatibility: Appropriate for small motors, indicator lamps, relays, heating elements, and other loads that do not exceed 4A at 250V AC. Mechanical compatibility: Compact 19 mm bezel fits common panel cutouts; suitable for retrofit or new installations with limited space. Typical applications (practical use scenarios) Control panels: Mount as a user-facing start/stop or enable switch on industrial or laboratory control panels requiring a compact, clearly rated switch. Appliance and equipment replacement: Replace a worn or broken microswitch in small appliances or service equipment where a single normally open contact and a 19 mm mounting hole are standard. DIY and prototyping: Integrate into hobbyist control boxes, test rigs, or automation prototypes that need a reliable, panel-mounted on/off control within the 4A/250V limit. What to check before buying Confirm your circuit current and voltage do not exceed 4A/250V. Verify your panel or enclosure has a 19 mm cutout or that a 19 mm bezel is acceptable. Ensure a single normally open contact (1NO) meets your control logic or choose an alternative if normally closed or multiple contacts are required. Reliable, compact, and clearly specified — this 19 mm microswitch offers a straightforward solution for panel-mounted on/off control where a 1NO contact and a 4A/250V rating are required. Company type: independent (selbständig).