Product Details
Description
The TU811 3BSE008526R1 is designed for compact cabinet installations, connecting up to 8 I/O channels with a single-wire termination scheme and shared common return to save space. Its passive backplane ensures high reliability and stability by avoiding active electronics. The TU811 supports hot-swapping of S800 I/O modules for maintenance without disconnecting field cables. Mechanical keying pins prevent incompatible module insertion, safeguarding process control hardware.
Specifications
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Manufacturer: ABB
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Country of Origin: Sweden
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Model Number: TU811
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Order Number: 3BSE008526R1
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Product Type: Compact Module Termination Unit (MTU)
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Weight: 0.32 kg
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Terminal Count: 12 Screw Terminals
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Maximum Rated Voltage: 50 V DC
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Maximum Rated Current: 2 A per channel
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Wiring Type: Single-wire connection with shared return
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Mounting: 35mm standard DIN rail
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Ingress Protection: IP20
Features
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Space-Efficient Design: Compact width allows for higher I/O density within standard electrical cabinets, reducing overall hardware footprint.
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Streamlined Connectivity: Features 12 screw terminals optimized for 8-channel modules using a common return path for simplified wiring.
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Hot-Swap Support: Permits the installation and removal of active I/O modules while the station is powered, minimizing process downtime.
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Passive Circuitry Architecture: Hardware-only routing design maximizes the Mean Time Between Failures (MTBF) by removing electronic failure points.
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Mechanical Coding Safety: Built-in keying system ensures only correctly matched I/O modules can be seated, preventing accidental equipment damage.
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Universal DIN Rail Mounting: Designed for easy snap-on installation on standard 35mm rails, supporting both vertical and horizontal orientations.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Redundant Automation Systems: Core Architecture, Business Value, and Technical Advantages
Unplanned downtime poses a major financial threat to process manufacturing. To prevent costly interruptions, engineers deploy redundant PLC and DCS architectures that ensure continuous operation when hardware fails. This technical guide explores redundancy principles, critical system nodes, and real-world scenarios.
Preventing Emergency Stop Spurious Trips in Industrial Control Systems
Emergency Stop pushbuttons use Normally Closed contacts for fail-safe safety, but mechanical wear can cause costly spurious trips. This technical guide examines E-Stop contact failure root causes, redundant hardware setups, PLC logic monitoring, and maintenance strategies to maximize plant availability.
Why 24V DC Is the Universal Standard for Industrial Automation Power Supplies
Industrial manufacturing requires continuous uptime to prevent equipment damage. Unlike AC power, 24V DC circuits seamlessly integrate with UPS units and battery banks. During main grid failures, a 24V DC backup system instantly maintains PLC memory, instrument loops, and critical safety valves without interruption.