Littelfuse DRT-DTH Reed Switch, SPDT-CO, 500VDC, 3A

The Littelfuse DRT-DTH Series Reed Switch is a highly reliable, magnetically activated switching component designed for precision control in electrical circuits. Featuring a SPDT-CO (Single Pole Double Throw, Changeover) contact configuration, it offers versatile switching capabilities, allowing it to either make or break a connection within a circuit based on the presence of a magnetic field. This makes it an ideal solution for sensing, security, and automation applications where non-contact operation is essential.

Constructed with a hermetically sealed glass envelope, the switch is protected from dust, moisture, and other environmental contaminants, ensuring consistent performance and a long operational life. Its 500VDC maximum switching voltage and 3A maximum contact current rating make it suitable for a wide range of low to medium power DC applications, from industrial control panels to consumer electronics. The maximum switching power is 30W.

Key Features & Specifications

• Series: DRT-DTH
• Contact Configuration: SPDT-CO (Changeover)
• Maximum Switching Voltage: 500 VDC
• Maximum Contact Current: 3 A
• Maximum Switching Power: 30 W
• Low Contact Resistance: Maximum of 0.125 ohm for efficient power transfer and minimal voltage drop.
• Compact Dimensions: Measuring just 43mm in height, 33mm in width, and 15mm in depth, this reed switch is designed for space-constrained installations.
• Lightweight: Weighs only 2 grams for easy integration without adding significant mass.

This component is a fundamental building block for creating reed relays, position sensors, fluid level detectors, and security system door/window contacts. Its robust design and precise electrical characteristics provide dependable switching performance in demanding environments.