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Specifications
Mfr. Part #:
DRS-50-97-103
Key Attributes
Model Number:
DRS-50-97-103
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 protection from the external environment and preventing contamination. This switch is capable of high voltage and power switching, handling up to 400Vdc at 2mA, with a carry current of 6A and a maximum switching power of 100W/VA. It boasts high insulation resistance (1010 ohms minimum) and low contact resistance (< 100 milliohms). The DRS-50 is suitable for security systems, limit switching, industrial applications, and white goods.
Product Attributes
- Brand: Littelfuse
- Model Series: DRS-50
- Contact Form: A (SPST-NO - Single-pole, single-throw, normally open)
- Body Material: Glass
- Lead Material: Tin-plated Ni-Fe wire
- Approvals: E47258, E471070, DEMKO 14 ATEX 1393U
- RoHS: Compliant (implied by note)
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. |
| Contact Rating (Switching) | 100 | W/VA (max.) | Product of switching voltage and current should not exceed wattage rating. |
| Switching Voltage (Vdc) | 400 | Vdc (max.) | |
| Switching Voltage (Vac) | 280 | Vac (max.) | |
| Switching Current (Adc) | 3.0 | Adc (max.) | |
| Switching Current (Aac) | 2.1 | Aac (max.) | |
| Carry Current (Adc) | 6.0 | Adc (max.) | |
| Breakdown Voltage (Vdc) | 600 | Vdc (min.) | Per MIL-STD-202, Method 301. |
| Contact Resistance (Initial) | 0.100 | (max.) | |
| Insulation Resistance | 1010 | (min.) | |
| Contact Capacitance (Typical) | 0.6 | pF (typ.) | |
| Operating Temperature | -40 to +125 | C | |
| Storage Temperature | -65 to +125 | C | Long time exposure at elevated temperature may degrade solderability of leads. |
| Operate Time (max.) | 4.5 | ms | Including bounce. Per EIA/NARM RS-421-A, diode suppressed coil (Coil IV). |
| Release Time (max.) | 2.5 | ms | Per EIA/NARM RS-421-A, diode suppressed coil (Coil IV). |
| Shock Resistance (max.) | 100 | G | 11ms 1/2 sine wave. Per EIA/NARM RS-421-A and MIL-STD-202. |
| Vibration Resistance (max.) | 30 | G | 50-2000 Hertz. Per EIA/NARM RS-421-A and MIL-STD-202. |
| Resonant Frequency (Typical) | 850 | Hz (typ.) | |
| Pull-In Range (Ampere-Turns) | 42-83 | AT | Rating Sensitivity: 60 AT. |
| Packaging Option | Bulk | Quantity: 1000 |
2410311328_Littelfuse-DRS-50-97-103_C19278142.pdf
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