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Specifications
Mfr. Part #:
DRS-50-72-78
Key Attributes
Model Number:
DRS-50-72-78
Product Description
Product Overview
The Littelfuse DRS-50 is a standard, normally open (Form A) high-power reed switch designed for demanding applications. It features a hermetically sealed glass envelope, ensuring reliable performance unaffected by its environment. This switch is capable of high voltage and power switching, handling up to 400Vdc at 2mA, carrying up to 6A, and switching up to 100W/VA. With high insulation resistance and low contact resistance, it is suitable for security, limit switching, industrial applications, and white goods.
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
- RoHS Compliant: Yes
Technical Specifications
| Specification | Value | Unit | Notes |
|---|---|---|---|
| Glass Envelope Length | 50.80 (2.000) | mm (inch) | MAX |
| Glass Envelope Diameter | 5.25 (.207) | mm (inch) | MAX |
| Switching Voltage | 400 | Vdc | max. |
| Switching Voltage | 280 | Vac | max. |
| Switching Current | 2 | mA | at 400Vdc |
| Switching Current | 3.0 | Adc | max. |
| Switching Current | 2.1 | Aac | max. |
| Carry Current | 6.0 | Adc | max. |
| Contact Rating (Power) | 100 | W/VA | max. |
| Breakdown Voltage | 600 | Vdc | min. |
| Contact Resistance (Initial) | < 0.100 | max. | |
| Insulation Resistance | 1010 | min. | |
| Contact Capacitance | 0.6 | pF | typ. |
| Operating Temperature | -40 to +125 | C | |
| Storage Temperature | -65 to +125 | C | |
| Operate Time | 4.5 | ms | max. |
| Release Time | 2.5 | ms | max. |
| Shock Rating | 100 | G | max. (11ms 1/2 sine wave) |
| Vibration Rating | 30 | G | max. (50-2000 Hertz) |
| Resonant Frequency | 850 | Hz | typ. |
| Ampere-Turns Range (Agency Approvals) | 42-83 | AT | |
| Rating Sensitivity | 60 | Ampere Turns | |
| Packaging Option | Bulk | Quantity: 1000 |
2411010924_Littelfuse-DRS-50-72-78_C19423044.pdf
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