COMUS RI-03A Reed Switch, SPST-NO, 200VDC, 500mA

The COMUS RI-03A is a high-performance, single-pole single-throw (SPST) micro dry reed switch, designed for precision sensing and switching applications. It features a hermetically sealed, gas-filled glass envelope with reliable normally open (NO) contacts, ensuring long-term stability and excellent electrical performance. The switch utilises ruthenium on gold contacts, which provide low contact resistance and high durability, making it suitable for a wide range of electronic environments.

This double-ended type switch is magnetically actuated, meaning it can be reliably operated by an electromagnet, a permanent magnet, or a combination of both. Its construction includes a superior glass-to-metal seal and precise blade alignment, which contribute to its robustness and consistent operation. The switch is engineered to withstand soldering heat in accordance with the IEC 68-2-20 standard, and it comes with cropped and performed leads for straightforward through-hole mounting.

With an excellent life expectancy and high reliability, the RI-03A is an ideal component for critical sensing and instrumentation tasks. It is commonly specified for industrial automation, control systems, security devices, and other applications where dependable magnetic switching is required. Its compact dimensions and proven design make it a trusted choice for engineers seeking a component that combines performance with longevity.

Key Features

• Hermetically sealed gas-filled glass envelope for protection and stability
• Ruthenium on gold normally open (NO) contacts for low resistance
• Magnetically actuated by an electromagnet or permanent magnet
• Superior glass-to-metal seal and blade alignment for reliability
• Withstands soldering heat per IEC 68-2-20 standard
• Cropped and performed leads for easy through-hole installation
• Excellent life expectancy and operational reliability