The KSK-1A66 Series is a miniature, high-performance reed switch designed for automotive-grade reliability and general-purpose use. With a compact glass body measuring 14.0 mm in length and 2.2 mm in diameter, this SPST-NO (Form A) switch supports switching voltages up to 180 VDC and currents up to 0.5 A, with a rated power of 10 W.

Its hermetically sealed construction ensures consistent operation in harsh environments, while a wide range of operate sensitivities (10–40 AT) allows for flexible magnetic actuation. The KSK-1A66 is UL-approved and widely used across automotive, industrial, and consumer electronics applications.