KSK-1A66/3 Series Reed Switch
The KSK-1A66/3 Series is a miniature, high-performance reed switch designed for automotive-grade reliability and precision switching. With a glass body length of 14.0 mm and diameter of 2.2 mm, this SPST-NO (Form A) switch supports switching voltages up to 200 VDC and currents up to 0.5 A, with a rated power of 10 W.
Its hermetically sealed construction ensures long-term durability in harsh environments, while the operate range of 20–30 AT provides consistent magnetic sensitivity. The KSK-1A66/3 is optimized for through-hole mounting and is suitable for a wide range of industrial, automotive, and consumer applications.
Standards and Certifications
- Miniature design ideal for compact and embedded systems
- Automotive-grade reliability for high-performance environments
- Hermetically sealed glass body protects against moisture and contaminants
- Fast switching response with low operate and release times (0.7 ms / 0.05 ms)
- Wide operating temperature range from –40°C to +130°C
- Shock and vibration resistant for rugged applications
| Overall Length mm (inches) | 44.1 (1.736) |
| Glass Length Max. mm (inches) | 14.0 (0.551) |
| Glass Dia. Max. mm (inches) | 2.20 (0.086) |
| 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 |
- Fluid level and flow sensors
- Lid and cover detection in appliances
- Automotive position and proximity sensing
- HVAC system monitoring
- Security and alarm systems
- Industrial automation and control systems