Siemens 3RH2140-2BB40 Contactor Relay, 4 NO, 24V DC, Spring-Loaded Terminal, Size S00 Original Brand New

Overview

The Siemens SIRIUS 3RH2140-2BB40 is a high-performance contactor relay designed for control circuits, switching, and auxiliary functions in industrial automation. Part of the trusted SIRIUS family, this device is engineered for maximum reliability and space efficiency. It features 4 normally open (NO) auxiliary contacts, making it ideal for standard control applications. The 3RH2140-2BB40 operates on a 24 V DC control voltage, offering reliable performance in modern DC control systems. Its defining feature is the fast, vibration-proof spring-loaded terminal technology, which ensures quick installation and maintenance-free operation. Packaged in the compact frame size S00, it is perfect for space-constrained cabinets.

Benefit

• Reliable Switching: Ensures consistent performance in industrial applications.

• Easy Installation: Spring-loaded terminals simplify wiring and maintenance.

• Compact Design: Frame Size S00 optimizes space in control panels.

• Durable & Long-Lasting: Siemens quality guarantees robust operation under continuous use.

• Versatile Application: Suitable for automation, motor control, and other electrical control systems.

Function

• Acts as a contactor relay for controlling electrical circuits.

• Provides 4 Normally Open (NO) contacts for flexible circuit design.

• Operates on 24 V DC, suitable for low-voltage control circuits.

• Spring-loaded terminals ensure secure, vibration-resistant connections.

• Fits Frame Size S00, ideal for compact control panels.

Application

The 3RH2140-2BB40 is essential for:

• Implementing complex control circuit logic.

• Switching small loads and indicating status in control panels.

• Extending the number of auxiliary contacts for motor starters or main contactors.

• Safety circuits requiring reliable, redundant switching (when used in combination with safety-rated components).

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Datasheet in PDF

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