Latched Contactor Relays, Screw terminals, DC Coil@ - 3RH2431-1BM40

Product Description

Siemens 3RH2431-1BM40 Latched Contactor Relay – High-Performance Control Relay for Industrial Automation

The Siemens 3RH2431-1BM40 Latched Contactor Relay is a robust and highly reliable industrial switching device designed for advanced control, automation, signaling, and auxiliary switching applications. As part of the globally recognized Siemens SIRIUS 3RH2 Series, this relay combines durable construction, dependable contact performance, and energy-efficient latching technology, making it an excellent choice for modern industrial control systems. The 3RH2431-1BM40 features a 220V DC coil, 3 Normally Open (3NO) contacts, and 1 Normally Closed (1NC) contact, providing flexible control functionality for a wide range of industrial applications.

Unlike conventional contactor relays that require continuous coil energization, the Siemens 3RH2431-1BM40 utilizes a latched operating mechanism. This design allows the relay to maintain its switching position without continuously consuming coil power, resulting in improved energy efficiency and reduced heat generation. Latching relays are particularly valuable in industrial automation systems where maintaining a switching state without constant power consumption is critical. This feature contributes to lower operating costs and improved system efficiency.

The 3RH2431-1BM40 Contactor Relay is equipped with a 3NO + 1NC contact configuration, enabling multiple control and signaling functions from a single device. The normally open contacts can be used for motor control, PLC interfacing, signaling circuits, and automation commands, while the normally closed contact supports interlocking, safety circuits, and status monitoring applications. This versatile arrangement makes the relay suitable for manufacturing facilities, process plants, machine automation systems, HVAC controls, water treatment plants, energy management systems, and industrial infrastructure projects.

Designed in S00 frame size, the Siemens 3RH2431-1BM40 offers a compact footprint that allows efficient installation in control panels and switchboards where space optimization is important. Despite its compact dimensions, the relay delivers reliable switching performance and excellent electrical durability, making it ideal for demanding industrial environments.

A major advantage of this model is its dependable screw terminal connection system. Screw terminals provide secure conductor retention, excellent vibration resistance, and simplified maintenance. This proven connection technology is widely preferred by control panel manufacturers, OEMs, and maintenance engineers because it ensures long-term electrical reliability under challenging operating conditions.

The Siemens SIRIUS 3RH2431-1BM40 is engineered according to international standards including IEC 60947-1, IEC 60947-4-1, and IEC 60947-5-1, ensuring compliance with global industrial control requirements. The relay offers a rated insulation voltage of 690V, impulse withstand voltage of 6kV, and exceptional resistance to industrial environmental conditions. These characteristics help maintain stable performance in electrically demanding applications.

Built for long-term industrial operation, the 3RH2431-1BM40 delivers excellent mechanical endurance with an operational life of up to 5 million switching cycles. Siemens' advanced contact technology ensures high contact reliability, even in low-current control circuits commonly used in PLC and automation applications. This makes the relay a dependable choice for mission-critical control systems where reliability and uptime are essential.

The relay operates with a 220V DC control supply voltage and is optimized for industrial DC control circuits. It offers low power consumption and efficient switching characteristics, making it suitable for modern automation architectures where energy efficiency is increasingly important. The latching design further enhances energy savings by eliminating continuous coil energization requirements.

As part of the modular Siemens SIRIUS ecosystem, the 3RH2431-1BM40 Latched Contactor Relay supports a wide range of compatible accessories, including auxiliary contact blocks, surge suppressors, and mounting accessories. This modularity enables system designers to customize control solutions while maintaining standardized Siemens components throughout their installations.

The Siemens 3RH2431-1BM40 is widely used in machine building, process automation, factory automation, conveyor systems, power distribution panels, water treatment facilities, HVAC systems, and industrial process control applications. Its combination of latching functionality, compact design, reliable contacts, and Siemens engineering excellence makes it a preferred choice among automation professionals worldwide.

At SBsmart.in, we supply genuine Siemens industrial automation and control products trusted by engineers, panel builders, OEMs, and industrial buyers across India. When you purchase the Siemens 3RH2431-1BM40 Latched Contactor Relay, you receive an authentic Siemens solution engineered for long-term reliability, superior performance, and seamless integration into industrial automation systems.