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Siemens 3RH2131-2BB40 SIRIUS Contactor Relay for industrial automation

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Siemens 3RH2131-2BB40

by Siemens

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OverviewUpgrade your industrial control systems with the Siemens 3RH2131-2BB40 SIRIUS Contactor Relay, a cornerstone for dependable auxiliary circuit management. This robust component from Siemens’ respected SIRIUS range is crafted for exceptional accuracy and longevity, making it indispensable for vital switching tasks. Engineered to thrive in demanding industrial environments, the 3RH2131-2BB40 delivers adaptable switching capabilities through its meticulously designed contact system, guaranteeing uninterrupted operation and heightened productivity.The Siemens 3RH2131-2BB40 distinguishes itself with an optimal 24 V DC control voltage, ensuring efficient and stable power handling across a diverse array of control applications. Its innovative spring-type terminals revolutionize the wiring process, providing swift, secure, and vibration-resistant connections that substantially cut down installation time and bolster operational stability. This contactor relay is more than just a part; it's the bedrock for resilient and future-ready industrial control setups.Key Features Contact Configuration (3 NO + 1 NC): This adaptable setup provides three normally open and one normally closed contact, enabling flexible control over various auxiliary circuits and signal switching functions. Optimized 24 V DC Control Voltage: Guarantees stable and efficient performance, perfectly suited for a wide range of industrial control systems requiring direct current power. Spring-Type Terminals for Rapid, Secure Wiring: Eliminate time-consuming screw connections. These advanced terminals offer fast, tool-free wiring, ensuring a robust connection resilient to loosening from vibration or over time. Compact and Space-Saving Design: Developed to fit into even the most restricted control panels, maximizing cabinet space without compromising functionality or access. Exceptional Contact Reliability: Manufactured with Siemens' renowned quality, ensuring consistent and trustworthy switching operations, which minimizes downtime and enhances system uptime. Globally Certified for Universal Application: Complies with key international standards, including IEC, UL, and CSA, guaranteeing worldwide acceptance and smooth integration into global projects. Wide Operating Temperature Range (-25°C to +60°C): Designed to operate flawlessly across a broad spectrum of environmental conditions, ensuring dependability in both extreme cold and heat. Technical Specifications Product Type: Contactor Relay Brand: Siemens Series: SIRIUS 3RH2 Model Number: 3RH2131-2BB40 Contact Configuration: 3 Normally Open (NO) + 1 Normally Closed (NC) Control Voltage: 24 V DC Terminal Type: Spring-Type Terminals Mounting Options: Versatile DIN rail or direct screw mounting for flexible installation. Operating Temperature Range: -25°C to +60°C (13°F to 140°F) Certifications & Approvals: IEC, UL/CSA (Underwriters Laboratories / Canadian Standards Association) Standards Compliance: Designed and manufactured to stringent international quality and safety standards. Applications Advanced Industrial Automation Systems: Essential for precise control of auxiliary circuits, motors, and signaling devices in automated production lines and robotic cells. Integrated Control Panel Solutions: Ideal for constructing intricate control panels where space efficiency and reliable signal switching are paramount. Efficient Signal Switching in Processing Plants: Perfect for managing and routing control signals within chemical, food and beverage, and pharmaceutical processing environments. Building Management Systems (BMS): Enhances the regulation of HVAC, lighting, and security systems through dependable auxiliary circuit switching. Conveyor System Management: Provides robust control for initiating, pausing, and interlocking various segments of conveyor systems. Why Choose This Product?The Siemens 3RH2131-2BB40 Contactor Relay stands out due to its superior engineering, ensuring reliable and precise control in the most demanding industrial settings. With its robust construction, versatile contact configuration, and convenient spring-type terminals, this relay minimizes installation time and maximizes operational efficiency. Opt for Siemens quality for a dependable and future-proof solution.Order NowSecure the Siemens 3RH2131-2BB40 SIRIUS Contactor Relay for your industrial applications today. Experience unmatched performance and reliability by adding this essential component to your system. Contact us for competitive pricing and quick delivery.FAQWhat is the primary function of the Siemens 3RH2131-2BB40?The Siemens 3RH2131-2BB40 is a SIRIUS Contactor Relay designed for precise control and switching of auxiliary circuits in industrial automation systems, ensuring reliable operation and enhanced productivity.What type of terminals does this contactor relay use?This contactor relay features innovative spring-type terminals, which allow for quick, secure, and vibration-resistant wiring connections, significantly reducing installation time and increasing reliability.What is the control voltage for this device?The Siemens 3RH2131-2BB40 operates with an optimal 24 V DC control voltage, ensuring stable and efficient power management for a wide array of control processes.Can this relay be used in various environmental conditions?Yes, with a wide operating temperature range of -25°C to +60°C (-13°F to 140°F), this contactor relay is engineered to perform flawlessly across diverse environmental conditions, guaranteeing reliability in both extreme cold and heat.Is the Siemens 3RH2131-2BB40 globally compliant?Indeed. It complies with major international standards, including IEC, UL, and CSA, ensuring global acceptance and seamless integration into worldwide industrial projects.

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PRODUCT DETAILS

Siemens 3RH2131-2BB40

Overview

This is a genuine Siemens component from the SIRIUS Contactors family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem
  • Engineered to integrate inside SIRIUS Contactors installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Siemens platform with documented conversion notes for the SIRIUS Contactors family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Product Type: Contactor Relay
  • Brand: Siemens
  • Series: SIRIUS 3RH2
  • Model Number: 3RH2131-2BB40
  • Contact Configuration: 3 Normally Open (NO) + 1 Normally Closed (NC)
  • Control Voltage: 24 V DC
  • Terminal Type: Spring-Type Terminals
  • Mounting Options: Versatile DIN rail or direct screw mounting for flexible installation.
  • Operating Temperature Range: -25°C to +60°C (13°F to 140°F)
  • Certifications & Approvals: IEC, UL/CSA (Underwriters Laboratories / Canadian Standards Association)
  • Standards Compliance: Designed and manufactured to stringent international quality and safety standards.

Applications

  • Advanced Industrial Automation Systems: Essential for precise control of auxiliary circuits, motors, and signaling devices in automated production lines and robotic cells.
  • Integrated Control Panel Solutions: Ideal for constructing intricate control panels where space efficiency and reliable signal switching are paramount.
  • Efficient Signal Switching in Processing Plants: Perfect for managing and routing control signals within chemical, food and beverage, and pharmaceutical processing environments.
  • Building Management Systems (BMS): Enhances the regulation of HVAC, lighting, and security systems through dependable auxiliary circuit switching.
  • Conveyor System Management: Provides robust control for initiating, pausing, and interlocking various segments of conveyor systems.

Why Choose the 3RH2131-2BB40?

The Siemens 3RH2131-2BB40 Contactor Relay stands out due to its superior engineering, ensuring reliable and precise control in the most demanding industrial settings. With its robust construction, versatile contact configuration, and convenient spring-type terminals, this relay minimizes installation time and maximizes operational efficiency. Opt for Siemens quality for a dependable and future-proof solution.

Availability & Shipping

  • In stock: 3RH2131-2BB40 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 3RH2131-2BB40 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Siemens

The Siemens 3RH2131-2BB40 is a SIRIUS Contactor Relay designed for precise control and switching of auxiliary circuits in industrial automation systems, ensuring reliable operation and enhanced productivity.

Machine down? We ship parts the same day.

New, surplus, and refurbished Siemens inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

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Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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