KSK-1A85 Series Reed Switch
The KSK-1A85 Series is a high-power, high-voltage reed switch designed for demanding applications requiring robust electrical performance and compact form factor. With a glass body length of 21.0 mm and diameter of 2.75 mm, this SPST-NO (Form A) switch supports switching voltages up to 1,000 VDC, currents up to 1.0 A, and a rated power of 100 W.
Its hermetically sealed vacuum design ensures long-term reliability in harsh environments, while the wide operate range (15–55 AT) allows for flexible magnetic actuation. The KSK-1A85 is UL-approved and widely used in automotive, industrial, and test equipment applications.
Standards and Certifications
- High Voltage Capability: Up to 1,000 VDC switching
- High Power Handling: Rated for 100 W applications
- UL Approved: Ensures safety and compliance
- Hermetically Sealed: Reliable operation in harsh environments
- Fast Switching: Low operating and release times
- Durable Construction: Shock resistance up to 50 g, vibration resistance up to 20 g
- Wide Temperature Range: Operates from -40°C to +130°C
| 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 | 1A (SPST) Normally Open (N.O.) |
| Pull-In Range | 15-55 AT |
| Rated Power Max. | 100W/1,000VDC/1 Amp DC |
- Automotive Systems: EV battery management, high-voltage switching
- Test & Measurement (ATE): Precision switching in high-voltage test setups
- Industrial Controls: Power distribution, motor control
- HVAC & White Goods: Line voltage switching and control
- Position & Level Sensing: Valve detection, fluid level monitoring