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The ABB 1SDA066479R1 is a specialized mounting bracket designed for seamless integration of ABB’s RHE series accessories (e.g., auxiliary contacts, shunt releases, undervoltage releases) with XT1, XT2, and XT3 series molded case circuit breakers (MCCBs). As a critical component in low-voltage electrical systems, this bracket serves as a stable interface between the breaker and its auxiliary devices, ensuring precise alignment, secure attachment, and reliable transmission of control or monitoring signals.
Constructed from high-strength galvanized steel, the bracket is engineered to withstand harsh industrial conditions—including dust, humidity, and moderate vibration—without compromising mechanical stability. Its standardized design strictly adheres to ABB’s XT1-XT3 breaker and RHE accessory dimensional specifications, eliminating installation gaps and reducing the risk of accessory misalignment (a common cause of auxiliary function failure). Whether used in new electrical panel builds or retrofit projects, this bracket streamlines assembly and enhances the long-term reliability of the breaker-accessory system.
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Precision Compatibility
Exclusively engineered for ABB XT1-XT3 MCCBs and RHE accessories, ensuring 1:1 dimensional matching. This eliminates the need for on-site modifications (e.g., drilling, filing) and guarantees that auxiliary devices align with the breaker’s mechanical and electrical interfaces.
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Enhanced Durability
Hot-dip galvanized steel construction provides superior corrosion resistance (exceeding industry standards with 120-hour salt spray protection) and high mechanical strength, making it suitable for humid environments (e.g., food processing plants) or outdoor enclosures (e.g., renewable energy cabinets).
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Simplified Installation
Pre-drilled M4 threaded holes and clear alignment markers reduce installation time by 30% compared to generic brackets. The bracket’s lightweight design (80g) also eases handling during panel assembly, especially in high-density electrical cabinets.
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Reliable Signal/Force Transmission
Secure attachment minimizes vibration-induced movement between the breaker and accessory, ensuring consistent performance of critical functions (e.g., auxiliary contact signaling for SCADA systems, shunt release activation for emergency shutdowns).
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Space-Efficient Design
Compact profile (88mm×42mm×30mm) optimizes use of limited panel space, allowing for closer placement of breakers in high-density configurations (e.g., data center PDUs, industrial control panels).
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Broad Environmental Adaptability
Wide operating temperature range (-30°C to +85°C) and resistance to dust/moisture make it suitable for diverse applications, from cold storage facilities to tropical industrial sites.
The ABB 1SDA066479R1 bracket is essential for systems where XT1-XT3 breakers require RHE accessories, including:
- Industrial Control Systems: Mounting auxiliary contacts for motor control panels (e.g., manufacturing lines, conveyor systems) to enable remote status monitoring.
- Commercial Building 配电: Pairing with shunt releases in office towers or shopping malls to support centralized circuit shutdown during maintenance.
- Renewable Energy: Installing undervoltage releases in solar/wind power cabinets to protect inverters and batteries from voltage fluctuations.
- Data Centers: Integrating auxiliary contacts with XT1-XT3 breakers in PDUs to trigger alarms for power anomalies (e.g., overloads, short circuits).
- Marine/Offshore: Supporting RHE accessories in shipboard electrical systems, where corrosion resistance and vibration tolerance are critical.
- Infrastructure Projects: Used in hospital or airport electrical panels to ensure reliable operation of safety-critical circuits (e.g., emergency lighting, HVAC).
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Compatibility Verification
Confirm the breaker model (XT1/XT2/XT3) and accessory type (RHE series) before installation—generic or mismatched brackets may cause misalignment and function failure.
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Proper Fastening
Use M4×8mm stainless steel bolts and torque to 2.5–3 N·m. Over-tightening may damage the bracket’s threads; under-tightening risks vibration-induced loosening.
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Surface Preparation
Clean the breaker’s mounting surface of dust, rust, or paint to ensure full contact between the bracket and breaker. This prevents uneven load distribution and corrosion.
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Corrosion Protection
In highly corrosive environments (e.g., chemical plants, coastal areas), apply a thin layer of anti-rust lubricant to the bracket’s surface after installation to extend service life.
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Routine Inspection
During maintenance, check for loose bolts, corrosion, or deformation. Replace the bracket immediately if signs of damage (e.g., bent edges, stripped threads) are found.
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Authenticity Assurance
Use only genuine ABB brackets. Non-genuine products may not meet safety standards, leading to accessory failure or voiding of breaker/accessory warranties.
The structure and details of the product：
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