Siemens Contactor relay, screw, 4NO+4NC, 24VDC, size S00 Part number 3RH2244-1BB40

Product Overview

The Siemens contactor relay, 4 NO + 4 NC, DC 24 V, screw terminal, frame size S00, article number 3RH2244-1BB40, is a compact switching device from the SIRIUS 3RH2 series designed for auxiliary circuit control in industrial automation and control systems. It features eight auxiliary contacts arranged as four normally open and four normally closed, and is equipped with screw terminals for secure wiring. With a 24 V DC control supply and robust construction, this relay is suitable for reliable switching in demanding electrical circuits.

Key Features

• SIRIUS 3RH2 contactor relay with auxiliary contacts
• Contact configuration: 4 normally open (NO) + 4 normally closed (NC)
• Coil control voltage: 24 V DC
• Frame size: S00 for compact installation
• Screw terminal connections for secure wiring
• Designed for auxiliary logic and control circuits
• Industrial construction with durable switching contacts
• Suitable for mounting on DIN rails or panels

Technical Specifications

• Article Number: 3RH2244-1BB40
• Product Family: SIRIUS 3RH2 contactor relays
• Device Type: Contactor relay
• Contact Configuration: 4 NO + 4 NC
• Control Supply Voltage: 24 V DC
• Control Type: DC coil
• Terminal Type: Screw terminals
• Frame Size: S00
• Rated Insulation Voltage: up to 690 V
• Protection Class: IP20 when installed
• Operating Temperature Range: -25 °C to +60 °C
• Mechanical Endurance: High service life for frequent switching
• Mounting Type: DIN-rail or panel

Compliance & Standards

• Designed in accordance with Siemens requirements for industrial relays
• Suitable for auxiliary control in low-voltage automation systems
• Meets IEC/EN standards for contactor relays and auxiliary switching devices

Applications

The Siemens 3RH2244-1BB40 contactor relay is used to switch auxiliary circuits and control logic functions in industrial automation environments. Its configuration of four normally open and four normally closed contacts makes it suitable for applications such as interlocks, feedback signalling, and control circuit extension in machine automation, control panels, and distribution systems where dependable auxiliary contact switching is required.