Normally open single pole Littelfuse DRS-50-97-103 reed switch for demanding industrial environments

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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 (

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

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Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Changsha Purple Horn E-Commerce Co., Ltd.
Location 2332 Kaibin Commercial Plaza, No. 419 Shaoshan Middle Road, Shazitang Street, Yuhua District, Changsha City, Hunan Province
Contact Person Coral

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