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Siemens 3RH2131-1BB40
by Siemens
Read verified buyer reviews ↓OverviewThe Siemens 3RH2131-1BB40 industrial control relay is meticulously crafted for exceptional reliability and precise switching within demanding automation and control environments. This essential component is crucial for industrial setups requiring consistent and efficient signal processing. Featuring four normally open (NO) contacts, it offers adaptable control capabilities across a wide spectrum of uses. The integrated 24V DC coil promotes energy-efficient and stable operation, vital for sustaining peak performance in industrial settings. Its thoughtfully designed compact and modular form factor not only enables straightforward integration into existing Siemens control panels and automation configurations but also optimizes panel space. Adhering to Siemens' stringent engineering benchmarks, the 3RH2131-1BB40 embodies durability and advanced functionality.Key Features Four Normally Open (NO) Contacts: Delivers highly dependable and accurate switching for various automation circuits, ensuring robust control over connected loads. 24V DC Coil Voltage: Engineered for outstanding energy efficiency and remarkably stable operation, minimizing energy consumption while maximizing operational consistency. High Switching Capacity: Designed to effortlessly meet the rigorous demands of industrial automation and complex control uses, ensuring continuous performance. Compact Modular Design: Facilitates seamless and rapid installation, enhancing compatibility and integration within contemporary Siemens control systems and panels. Extended Electrical and Mechanical Lifespan: Optimized for superior durability and sustained reliability, ensuring prolonged operational service life under harsh industrial conditions. Secure Screw Terminal Connections: Guarantees quick, secure, and simple wiring, streamlining installation and maintenance procedures. IEC and UL Compliant: Strictly adheres to international safety and performance standards, providing assurance of quality and regulatory compliance. Technical Specifications Control Voltage: 24V DC Contact Configuration: 4 Normally Open (NO) Mounting Mechanism: DIN Rail (Ensures easy and standardized installation) Electrical Durability: Exceeds 10 million dependable switching cycles, affirming long-term reliability. Mechanical Durability: Engineered for exceptional robustness, promising an extended operational life even in high-stress environments. Terminal Type: Robust Screw Terminals for secure and reliable electrical connections. Protection Rating: IP20 (Offers protection against solid objects larger than 12mm). Operating Temperature: A broad range of -25°C to +60°C, ensuring performance in diverse industrial climates. Applications Advanced Industrial Automation and Motor Control: Ideal for precision control in complex machinery and motor-driven systems. Critical Electrical Switching and Circuit Isolation: Essential for safe and effective isolation of circuits and precise load switching. Reliable Relay Logic Control Panels: Forms the backbone for dependable and customizable control logic implementation. Seamless Conveyor and Machinery Automation: Ensures synchronized and efficient operation of automated production lines and equipment. Intelligent HVAC and Building Automation Systems: Provides precise control for climate management and smart building functionalities. Process Control and Signaling: Perfect for signal transfer and control in a variety of process engineering applications. Why Choose?Unmatched Reliability: Engineered by Siemens, a global leader, guaranteeing consistent and dependable performance in the most critical applications. Optimal Performance: With 4 NO contacts and a 24V DC coil, this relay consistently delivers high-performance switching, crucial for maintaining operational efficiency. Space-Saving Design: Its compact and modular nature allows for streamlined integration into control panels, maximizing existing space.Order NowEquip your industrial systems with the Siemens 3RH2131-1BB40 control relay for superior performance and unwavering reliability. Contact us today to place your order or to learn more about our comprehensive range of automation solutions.FAQHow many contacts does the Siemens 3RH2131-1BB40 have?The 3RH2131-1BB40 features four normally open (NO) contacts, offering versatile control for various circuits.What is the coil voltage for this relay?This industrial control relay operates with a 24V DC coil, designed for energy efficiency and stable function.Is the 3RH2131-1BB40 suitable for DIN rail mounting?Yes, it is designed for DIN rail mounting, ensuring straightforward and standardized installation in industrial panels.
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Siemens 3RH2131-1BB40
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:
- Exact replacement — same Siemens catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- 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
- Control Voltage: 24V DC
- Contact Configuration: 4 Normally Open (NO)
- Mounting Mechanism: DIN Rail (Ensures easy and standardized installation)
- Electrical Durability: Exceeds 10 million dependable switching cycles, affirming long-term reliability.
- Mechanical Durability: Engineered for exceptional robustness, promising an extended operational life even in high-stress environments.
- Terminal Type: Robust Screw Terminals for secure and reliable electrical connections.
- Protection Rating: IP20 (Offers protection against solid objects larger than 12mm).
- Operating Temperature: A broad range of -25°C to +60°C, ensuring performance in diverse industrial climates.
Applications
- Advanced Industrial Automation and Motor Control: Ideal for precision control in complex machinery and motor-driven systems.
- Critical Electrical Switching and Circuit Isolation: Essential for safe and effective isolation of circuits and precise load switching.
- Reliable Relay Logic Control Panels: Forms the backbone for dependable and customizable control logic implementation.
- Seamless Conveyor and Machinery Automation: Ensures synchronized and efficient operation of automated production lines and equipment.
- Intelligent HVAC and Building Automation Systems: Provides precise control for climate management and smart building functionalities.
- Process Control and Signaling: Perfect for signal transfer and control in a variety of process engineering applications.
Why Choose the 3RH2131-1BB40?
Unmatched Reliability: Engineered by Siemens, a global leader, guaranteeing consistent and dependable performance in the most critical applications. Optimal Performance: With 4 NO contacts and a 24V DC coil, this relay consistently delivers high-performance switching, crucial for maintaining operational efficiency. Space-Saving Design: Its compact and modular nature allows for streamlined integration into control panels, maximizing existing space.
Availability & Shipping
- ▸In stock: 3RH2131-1BB40 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 3RH2131-1BB40 ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Siemens
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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Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
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.