Product Overview
The Littelfuse DRS-50 is a standard, normally open (Form A) high-power reed switch designed for demanding applications. Featuring a hermetically sealed glass envelope, it offers robust performance with the capability to switch high voltages and power up to 400Vdc at 2mA, carrying up to 6A and handling 100W/VA. Its high insulation resistance and low contact resistance ensure reliable operation. Ideal for security, limit switching, industrial applications, and white goods, the DRS-50 provides a dependable solution for switching European mains voltage with zero operating power required 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
- RoHS Compliant: Yes (implied by RoHS Note)
Technical Specifications
| Specification | Value |
|---|---|
| Model | DRS-50 |
| 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 (at 400Vdc), 3.0 Adc, 2.1 Aac |
| 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 Resistance (max.) | 100 G (11ms 1/2 sine wave) |
| Vibration Resistance (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 File Numbers | E47258, E471070 |
| Packaging Option | Bulk (1000 quantity) |
2411010926_Littelfuse-DRS-50-52-73_C19438001.pdf
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