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SIEMENS 3RH1921-1HA22
by Siemens
Read verified buyer reviews ↓OverviewThe SIEMENS 3RH1921-1HA22 is a high-performance contactor module, expertly designed for seamless integration within the celebrated SIRIUS contactor system. This crucial element facilitates exceptionally dependable and efficient switching operations, making it essential across diverse industrial settings. Precision-engineered for resilience, this module assures robust performance and extended longevity, positioning it as an optimal selection for vital control panel setups and advanced automation systems. Its sophisticated construction ensures precise command, reduced downtime, and elevated operational safety in demanding industrial applications.Key Features Effortless SIRIUS System Integration: Specifically crafted for complete compatibility with SIEMENS SIRIUS contactor systems, guaranteeing straightforward installation and peak performance within your current infrastructure. Highly Reliable Switching: Delivers consistent and trustworthy switching actions vital for upholding process stability and control in various industrial environments. Compact & Space-Saving Design: Developed with efficiency in mind, its optimized form factor allows for maximum space utilization within control panels, simplifying wiring and reducing enclosure size requirements. Robust Industrial Durability: Constructed from premium-grade materials, this module is built to endure harsh operational conditions, including extreme temperatures, vibrations, and dust, ensuring sustained performance throughout its lifespan. Flexible AC/DC Coil Control: Provides adaptable coil control options supporting both AC and DC voltage, accommodating a wider array of power supply configurations. DIN Rail Mounting: Features a standard DIN rail mounting mechanism for swift, secure, and tool-free installation, facilitating efficient setup and upkeep. Integrated Protective Measures: Equipped with essential overcurrent and short-circuit protection, guarding both the module and connected equipment from electrical irregularities. Technical Specifications Series: SIRIUS Product Type: Contactor Module Voltage Rating: 24 V DC / 110-240 V AC Contact Type: 1 NO (Normally Open) Contact Compatibility: Designed for SIRIUS Contactor Systems Mounting Type: DIN Rail Mountable Operating Temperature: Suitable for a wide range of industrial operating temperatures Protection Features: Overcurrent and Short-Circuit Protection Applications Advanced Industrial Automation Systems: Crucial for reliable switching operations within intricate automated machinery and production lines. Critical Control Panel Integration: Provides essential control functions within electrical control panels for various industrial equipment and processes. Manufacturing Plant Operations: Ideal for precise control of motors, heaters, lighting, and other critical elements in manufacturing environments. Process Control Engineering: Ensures dependable and accurate control of industrial processes, contributing to optimized production and safety. Building Management Systems: Utilized for controlling HVAC systems, lighting, and security access in commercial and industrial buildings. Power Distribution and Management: Supports efficient power management and distribution within industrial facilities. Why Choose This Model?Benefit from SIEMENS' extensive engineering expertise, ensuring a product that performs consistently and endures longer in challenging industrial settings. Its precise and rapid switching capabilities minimize operational delays and maximize the throughput of your automated systems. Built for extreme durability, this module reduces the need for frequent replacements, offering a significant return on investment over its lifetime. Designed for seamless integration into the SIRIUS family, simplifying installation and maintenance.Order NowEnhance your industrial automation with the SIEMENS 3RH1921-1HA22 Contactor Module. Contact us today for pricing and availability!FAQWhat systems is the SIEMENS 3RH1921-1HA22 compatible with?It is specifically designed for perfect compatibility and seamless integration with SIEMENS SIRIUS contactor systems.What are the key features of this contactor module?Key features include seamless SIRIUS system integration, high-reliability switching, a compact design, rugged industrial durability, versatile AC/DC coil control, DIN rail mounting, and integrated protection features.
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SIEMENS 3RH1921-1HA22
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
- Series: SIRIUS
- Product Type: Contactor Module
- Voltage Rating: 24 V DC / 110-240 V AC
- Contact Type: 1 NO (Normally Open)
- Contact Compatibility: Designed for SIRIUS Contactor Systems
- Mounting Type: DIN Rail Mountable
- Operating Temperature: Suitable for a wide range of industrial operating temperatures
- Protection Features: Overcurrent and Short-Circuit Protection
Applications
- Advanced Industrial Automation Systems: Crucial for reliable switching operations within intricate automated machinery and production lines.
- Critical Control Panel Integration: Provides essential control functions within electrical control panels for various industrial equipment and processes.
- Manufacturing Plant Operations: Ideal for precise control of motors, heaters, lighting, and other critical elements in manufacturing environments.
- Process Control Engineering: Ensures dependable and accurate control of industrial processes, contributing to optimized production and safety.
- Building Management Systems: Utilized for controlling HVAC systems, lighting, and security access in commercial and industrial buildings.
- Power Distribution and Management: Supports efficient power management and distribution within industrial facilities.
Why Choose the 3RH1921-1HA22?
Benefit from SIEMENS' extensive engineering expertise, ensuring a product that performs consistently and endures longer in challenging industrial settings. Its precise and rapid switching capabilities minimize operational delays and maximize the throughput of your automated systems. Built for extreme durability, this module reduces the need for frequent replacements, offering a significant return on investment over its lifetime. Designed for seamless integration into the SIRIUS family, simplifying installation and maintenance.
Availability & Shipping
- ▸In stock: 3RH1921-1HA22 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 3RH1921-1HA22 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.
Related Siemens resources
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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.