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Siemens 6ES7400-0HR51-4AB0 Programmable Logic Controller
The Siemens 6ES7400-0HR51-4AB0 is a high-availability PLC (Programmable Logic Controller) system bundle from the Siemens SIMATIC S7-400H series, featuring dual CPU 412-5H processors and a hot standby H-system configuration.
| Brand | Siemens |
| Product Type | Programmable Logic Controller |
| Product | 6ES7400-0HR51-4AB0 |
Siemens 6ES7400-0HR51-4AB0 Programmable Logic Controller - Technical Specifications
| Specification | Value |
|---|---|
| Product Description | SIMATIC S7-400H, 412-5H System bundle H-system with 1 x UR2-H, without memory card, 2 x PS 405 10A, 24/48/60 V DC, 4 x sync modules up to 10 m, 2 x sync cables 1 m, 2 x CPU 412-5H, in addition 2 memory cards and 4 backup-batteries required |
| Product family | CPU 412H |
| Product Lifecycle (PLM) | PM300:Active Product |
| PLM Effective Date | 240 / 240 |
| Region Specific PriceGroup / Headquarter Price Group | Show prices |
| Metal Factor | AL : N / ECCN : 9N9999 |
| Net Weight (kg) | 30,40 x 59,10 x 28,00 |
| Packaging Dimension | CM |
| Package size unit of measure | 1 Piece |
The Siemens 6ES7400-0HR51-4AB0 bundle includes 1 x UR2-H rack (no memory card), 2 x PS 405 power supplies (10A, 24/48/60V DC), 4 x sync modules (up to 10 meters), 2 x sync cables (1 meter), and 2 x CPU 412-5H units. For full deployment, an additional 2 memory cards and 4 backup batteries are required. As part of the CPU 412H product family, this system is engineered to provide seamless H-redundancy with real-time synchronization and failover capabilities.
This S7-400H system is packaged in a sturdy industrial-grade case, weighing approximately 30.40 kg with dimensions of 59.10 x 28.00 cm. It is actively supported under the PM300 lifecycle, ensuring long-term availability and Siemens global service coverage. Designed to meet the demands of complex distributed automation networks, this system supports smooth integration with PCS 7, SCADA, and DCS infrastructures.
The Siemens 6ES7400-0HR51-4AB0 PLC system bundle is ideal for industrial environments that demand uninterrupted control, such as process plants, water treatment facilities, power substations, and critical infrastructure systems. With dual CPU 412-5H units operating in hot standby mode, the system ensures continuous control logic execution even in the event of hardware failure.
Indian automation engineers and EPC contractors often deploy this bundle for high-reliability installations where compliance with SIL-level standards, redundancy, and long-term system support are essential. The use of PS 405 DC power supplies (supporting 24/48/60V) also makes this configuration well-suited for field environments and mobile automation units that require flexible power options.
Whether you're deploying a greenfield automation project or retrofitting an existing legacy DCS, the Siemens 6ES7400-0HR51-4AB0 provides a fully scalable and robust control foundation that minimizes downtime, maximizes system integrity, and ensures plant-wide operational continuity.
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