KSK-1B85 Series Reed Switch
The KSK-1B85 Series is a high-voltage, high-power reed switch engineered for demanding industrial and general-purpose applications. Featuring a normally closed (Form B) contact configuration, it provides reliable switching performance in vacuum environments and is ideal for circuits requiring fail-safe operation.
With a glass body length of 21.0 mm and diameter of 2.75 mm, the KSK-1B85 supports rated power up to 100 W, switching voltages up to 350 VDC, and currents up to 1.0 A. Its robust construction and UL approval make it suitable for high-voltage designs across a wide range of industries.
Standards and Certifications
- Normally Closed (Form B) contact for fail-safe switching logic
- Vacuum-sealed design for enhanced reliability in harsh environments
- High power and voltage handling (100 W / 350 VDC / 1.0 A)
- Extended glass body (21 mm length) for stable mechanical integration
- Wide pull-in range (15–55 AT) for flexible magnetic actuation
- Hermetically sealed for long-term durability
- UL approved for compliance with safety standards
- Compatible with automated assembly and high-volume production
| Overall Length mm (inches) | 55.5 (2.185) |
| Glass Length Max. mm (inches) | 21.0 (0.826) |
| Glass Dia. Max. mm (inches) | 2.75 (0.108) |
| Lead Dia. mm (inches) | 0.6 (0.023) |
| Contact Form | 1B (SPST) Normally Open (N.C.) |
| Pull-In Range | 15-55 AT |
| Rated Power Max. | 100W/350VDC/1 Amp DC |
- Industrial Equipment: High-voltage switching, motor control, actuator feedback
- Power Systems: Circuit protection, load switching, fault detection
- Medical Devices: Isolation switching in diagnostic and imaging equipment
- Security Systems: Tamper detection, magnetic contact sensors
- HVAC Systems: Valve control, fluid level sensing
- Smart Home Devices: Power-efficient switching in automation systems
- Automotive Electronics: Brake detection, position sensing, battery management