KSK-1A46 Series Reed Switch



The KSK-1A46 Series is a miniature, high-reliability reed switch designed for precision switching in compact and demanding environments. Featuring a glass body length of 12 mm and a diameter of 2.0 mm, it offers SPST-NO (Form A) contact functionality and supports switching voltages up to 200 VDC.
Its hermetically sealed construction ensures long-term durability, while its optimized sensitivity range (10–40 AT) makes it suitable for a wide variety of industrial, automotive, and test applications. The switch is engineered for high shock and vibration resistance, making it ideal for rugged environments.
Standards and Certifications
- Miniature design ideal for space-constrained applications
- Hermetically sealed contacts for enhanced reliability in harsh conditions
- Flat lead configuration supports stable mounting and automated assembly
- No power required for actuation, enabling energy-efficient designs
- Fast switching response for precise control and timing
- High shock and vibration resistance for use in demanding environments
Overall Length mm (inches) | 44.3 (1.744) |
Glass Length Max. mm (inches) | 12.0 (0.472) |
Glass Dia. Max. mm (inches) | 2.00 (0.078) |
Lead Dia. mm (inches) | 0.5 (0.019) |
Contact Form | 1A (SPST) Normally Open (N.O.) |
Pull-In Range | 10-40 AT |
Rated Power Max. | 10W/200VDC/0.5 Amp DC |
- Valve and relay detection systems
- Rotary position sensing
- Test and measurement equipment (ATE)
- Industrial automation and robotics
- Military and aerospace systems
- Safety and security devices