Siemens SIRIUS Contactor Relay 24V DC Coil, 10A, 4W Power, 2 NO/2 NC Contacts, 600V DC, 690V AC 3RH2122-1FB40

Siemens 3RH2122-1FB40 Contactor Relay is a precision engineered electrical component designed for robust industrial automation and control systems. It features a 24V DC coil enabling effective control circuit operation and supports a contact current rating of 10A with a power rating of 4W at 24V DC coil voltage. This model incorporates a 2 NO (normally open) and 2 NC (normally closed) contact configuration, offering flexibility in switching applications under demanding conditions.

This contactor relay is suitable for use in a broad range of environments, capable of operating from temperatures as low as -25°C up to 60°C, making it ideal for industrial and manufacturing setups requiring durable relay components. Its compact form factor with dimensions approximately 45mm (length) by 45mm (width) by 58mm (depth) allows for efficient panel space utilization. The relay supports high contact voltages of up to 600V DC and 690V AC, ensuring compatibility with both DC and AC control systems.

The relay is designed for DIN rail mounting which facilitates quick and secure installation in control panels. The screw terminal type ensures tight and reliable electrical connections. The device adheres to international standards IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1 along with corresponding DIN EN norms, ensuring compliance with industry safety and performance regulations.

Auxiliary contacts allow expansion with snap-on auxiliary switch blocks, increasing versatility in control circuits. The relay offers a high degree of contact stability even at low voltage and current levels, making it well suited for integration with solid-state circuits. Finger-safe design enhances operator safety during installation and maintenance.

The relay is engineered to handle coil voltage surges effectively with optional RC elements, varistors, and diodes for suppressing switching noise.

Its compact size and reliable functionality make it a preferred choice for use in electrical automation, industrial manufacturing, HVAC systems, and other commercial electrical applications.

Manufactured in Germany, this Siemens Contactor Relay reflects high build quality and reliability standards. Applications include automation systems, control gear for industrial machinery, and auxiliary switching in complex control panels.

Compatible with Siemens SIRIUS series components, enabling seamless integration within existing automation systems. Explore more Siemens contactors and relays for industrial, electrical, and automation needs at EnvMart, your trusted industrial product destination.