DBR71210S

Reed relays are one of the most commonly used types of electromechanical switching elements in a variety of electronic devices. The reed relay is a solid state component that uses an electromagnet to move a reed switch between a pair of contacts. The DBR71210S is a reed relay designed by ABB for applications in industrial automation. It is a hermetically sealed relay that provides a high level of reliability and a long life cycle. It is also highly resistant to vibration and shock.

The DBR71210S is a double pole single throw reed relay. It has two poles and two normally open contacts. The contact material is silver, which provides low contact resistance and high contact current ratings. The contact ratings are rated for 2A at 250VAC, 8A at 28VDC, and 0.5A at 48VDC. The operating temperature range is from -40°C to +85°C. The nominal switching voltage is 70V and the minimum switching voltage is 40V. The DBR71210S is also compatible with a wide range of power supply devices, including AC, DC and AC-DC. The rated coil voltage is 12V DC with a coil resistance of 0.4 ohms.

The main working principle of the DBR71210S is simple and straightforward. When the coil is energized, the electromagnetic field attracts the reed switch, pushing the movable contact onto the stationary contact, creating a circuit and allowing electricity to flow. When the coil is de-energized, the switch returns to its original state, separating the two contacts and cutting off the electricity.

The DBR71210S reed relay is often used in applications such as industrial automation, signal control, interlocking systems, remote monitoring, and motor control. It is particularly useful for applications that require an electrically isolated, low voltage, high current relay, such as HVAC systems and industrial machinery. The long life cycle, high reliability, and excellent contact performance make the DBR71210S the ideal choice for many industrial and consumer applications.