NEW ARRIVAL: Siemens SIRIUS Auxiliary Contact Block 3RH2911-1HA02 Now Available for Immediate Shipment
Model Description
We are pleased to announce the arrival of the Siemens SIRIUS 3RH2911-1HA02 auxiliary switch block, a critical component for industrial control systems. This front-mounted auxiliary contact features 2 normally closed (NC) contacts and is designed for seamless integration with Siemens 3RT2 series contactors and 3RH2 series contactor relays. The compact unit measures just 36mm in width, 37.5mm in height, and 43.7mm in depth, making it ideal for space-constrained control panels. Engineered with screw-type terminals, the 3RH2911-1HA02 ensures reliable wire connections for auxiliary and control circuits, supporting conductor cross-sections from 0.5 to 2.5 mm². Its snap-on mounting mechanism allows for quick installation and removal without requiring specialized tools, significantly reducing maintenance downtime.
Key Features
The 3RH2911-1HA02 delivers exceptional performance in demanding industrial environments. Certified with IP20 protection rating, it operates reliably across a wide temperature range from -25°C to +60°C during operation and withstands storage conditions from -55°C to +80°C. The component offers outstanding mechanical durability with a typical service life of 10 million switching cycles, while electrical endurance reaches 200,000 cycles at AC-15 (230V) load conditions. Contact reliability exceeds industry standards with only one potential fault per 100 million switching operations (at 17V, 1mA). The auxiliary block meets IEC 60947-4-1 mirror contact and IEC 60947-5-1 positively driven operation requirements, ensuring compliance with international safety standards. With an insulation voltage rating of 690V and surge voltage resistance of 6kV, this component provides robust protection for auxiliary circuits.
Related Models in the 3RH2911 Series
The SIRIUS 3RH2911 family offers comprehensive configuration options to meet diverse application requirements. The 3RH2911-1HA01 provides a mixed contact arrangement with 1 NO and 1 NC contact, while the 3RH2911-1HA22 expands capabilities with 4 contacts (2 NO + 2 NC) for more complex control logic. For applications preferring tool-free installation, the 3RH2911-2HA02 variant features identical 2 NC configuration but utilizes cage clamp terminals instead of screw connections. Customers requiring multiple contact configurations can consider the 3RH2911-2HA22, which combines 2 NO and 2 NC contacts with spring-loaded terminals for enhanced wiring flexibility. All models share the same rugged design philosophy, mounting dimensions, and compatibility with 3RT2/3RH2 series devices, allowing standardized panel design across different projects.
Our Competitive Advantages
As a leading Industrial Automation trader, we deliver unparalleled value beyond product availability. Our flexible payment terms accommodate diverse customer needs, supporting wire transfers and credit facilities for qualified partners. We maintain extensive strategic inventory in multiple regional warehouses, enabling delivery within 5-7 business days to most destinations worldwide. Leveraging broad procurement channels across Europe and Asia, we source authentic components directly from authorized distribution networks, ensuring traceability without the limitations of single-channel supply chains. Our technical team provides pre-sales consultation and post-sales support, helping customers select optimal configurations for their specific applications. Unlike traditional distribution models, our streamlined logistics and direct supplier relationships eliminate unnecessary markups while accelerating order fulfillment, making us the preferred partner for time-sensitive industrial projects.
For immediate quotations or technical inquiries, please contact our sales department today.
About Us
We are a specialized industrial automation components trader committed to delivering genuine Siemens products with speed, flexibility, and expertise.