Product Overview
The Littelfuse DRS-50 is a standard, normally open (Form A, SPST-NO) high-power reed switch designed for demanding applications. It features a hermetically sealed glass envelope, ensuring reliable operation unaffected by its environment. This switch is capable of high voltage and power switching, handling up to 400Vdc at 2mA, carrying 6A, and switching up to 100W/VA. With a minimum voltage breakdown of 600Vdc and high insulation resistance, the DRS-50 is suitable for security, limit switching, industrial applications, and white goods, including the capability to switch European mains voltage. It requires zero operating power for contact closure.
Product Attributes
- Brand: Littelfuse
- Product Line: DRS-50 High Power Reed Switch
- Contact Form: A (SPST-NO - Single-pole, single-throw, normally open)
- Body Material: Glass
- Lead Material: Tin-plated Ni-Fe wire
- Certifications: E47258, E471070, DEMKO 14 ATEX 1393U (Agency File Numbers)
- RoHS Compliant: Yes
Technical Specifications
| Specification | Value |
|---|---|
| Glass Envelope Length | 50.80mm (2.000") |
| Glass Envelope Diameter | 5.25mm (.207") |
| Contact Rating (max.) | 100 W/VA |
| Switching Voltage (max.) | 400 Vdc |
| Switching Current (max.) | 2 mA (dc) / 3.0 A (dc) / 2.1 A (ac) |
| Carry Current (max.) | 6.0 Adc |
| Breakdown Voltage (min.) | 600 Vdc |
| Contact Resistance (initial, max.) | 0.100 |
| Insulation Resistance (min.) | 1010 |
| Contact Capacitance (typ.) | 0.6 pF |
| Operating Temperature | -40 to +125 C |
| Storage Temperature | -65 to +125 C |
| Operate Time (max.) | 4.5 ms |
| Release Time (max.) | 2.5 ms |
| Shock (max.) | 100 G (11ms 1/2 sine wave) |
| Vibration (max.) | 30 G (50-2000 Hertz) |
| Resonant Frequency (typ.) | 850 Hz |
| Pull-In Range (Ampere-Turns) | 42-83 AT |
| Rating Sensitivity (Ampere-Turns) | 60 AT |
| Agency Approvals | E47258, E471070, DEMKO 14 ATEX 1393U |
| Packaging Options | Bulk (1000 quantity) |
Note: Specifications are subject to change without notice.
2410311945_Littelfuse-DRS-50-57-68_C19289943.pdf
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