Siemens 3RH21402FB40

Siemens 3RH21402FB40 Overview

The Siemens 3RH21402FB40 is a globally utilized auxiliary contact block designed to enhance industrial control systems by providing reliable signal feedback and auxiliary switching functions.

Key Technical Features and Applications of 3RH21402FB40

• Modular auxiliary contact design enables seamless integration with Siemens contactors for expanded switching capacities in automation circuits.
• Rated for frequent switching operations, ensuring consistent performance in high-duty industrial environments.
• Compact form factor facilitates installation in confined control panels without compromising accessibility or serviceability.
• Enables extended control logic configurations by offering additional normally open (NO) and normally closed (NC) contacts for flexible circuit design.

Contextual Use Cases

This auxiliary contact block is essential in motor control centers for status indication and interlocking. It also plays a critical role in PLC-based automation systems requiring scalable auxiliary contacts for comprehensive machine operation monitoring.