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ABB 1SDA038302R1 Diverter Closure Release Device 

1. Key Parameters

• Order Code/Part Number: 1SDA038302R1 (unique identifier for procurement and documentation)
• Core Function: Remote/automatic closure control of diverter circuits; interfaces with circuit breakers or switchgear to enable safe power path switching
• Actuation Type: Electromagnetic release (for fast, reliable closure triggering)
• Rated Control Voltage (Uc): 220V DC (standard); Optional 110V DC / 230V AC on request (for compatibility with diverse control systems)
• Control Current: 1.8A (at rated DC voltage, inrush); 0.3A (holding current, DC)
• Operating Time: ≤100ms (from voltage application to full closure actuation)
• Reset Type: Manual reset (mechanical lever) or automatic reset (optional, via auxiliary voltage signal)
• Isolation Level: 2.5kVrms (control circuit to power circuit; control terminals to housing)
• Protection Features: Overvoltage protection (up to 120% of rated Uc), short-circuit protection (integrated current-limiting resistor), 2kV ESD protection (IEC 61000-4-2)
• Power Supply: Derived from the system’s control circuit (matches rated control voltage)
• Operating Temperature Range: -20℃~+60℃ (-4℉~140℉)
• Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
• Mounting Method: Panel mounting (compatible with ABB standard switchgear enclosures) via threaded studs; DIN rail mounting (optional with adapter bracket)
• Protection Class: IP40 (when installed in a switchgear cabinet); Complies with IEC 60947-1 (general safety for low-voltage switchgear), IEC 61000-6-2 (EMC immunity)

2. Product Features

• Fast Electromagnetic Actuation: ≤100ms operating time ensures rapid closure of diverter circuits—critical for time-sensitive applications (e.g., backup power transfer, load shedding) where delayed switching could cause downtime.
• Dual Reset Options: Supports manual reset (for scenarios requiring human confirmation) and optional automatic reset (for fully automated systems), enhancing operational flexibility.
• Wide Voltage Compatibility: Standard 220V DC control voltage with optional 110V DC/230V AC variants, enabling integration with global control systems without additional voltage converters.
• Robust Isolation & Protection: 2.5kVrms galvanic isolation prevents ground loops between control and power circuits; integrated overvoltage/short-circuit protection safeguards the device from electrical faults.
• Seamless Switchgear Integration: Optimized for ABB Tmax XT series circuit breakers and low-voltage switchgear—precise mechanical and electrical compatibility reduces integration complexity and ensures reliable interlocking.
• Industrial Durability: Flame-retardant thermoplastic housing (UL94 V-0) and corrosion-resistant metal components (zinc-plated steel) withstand dusty, humid, or vibration-prone environments (e.g., industrial plants, substations).
• Intuitive Status Monitoring: Built-in LED indicator (red for "de-energized," green for "energized/ready to actuate") provides real-time visual feedback, enabling quick troubleshooting of control circuit issues.

3. Application Fields

• Power Distribution Substations: Controls diverter circuits for load diversion between main and backup feeders—ensuring uninterrupted power supply to critical loads (e.g., hospitals, data centers) during feeder maintenance or faults.
• Industrial Plants: Manages diverter switches for motor starting circuits (e.g., bypassing soft starters after motor acceleration) or isolating faulty equipment from the main power bus.
• Renewable Energy Systems: Enables switching of power paths between solar/wind inverters and the grid, or between renewable energy sources and battery storage—supporting optimal energy distribution and grid compliance.
• Data Centers & Critical Infrastructure: Triggers diverter closures for UPS (Uninterruptible Power Supply) transfer circuits, ensuring seamless switchover from grid power to backup UPS during power outages.
• Commercial Buildings: Controls diverter circuits in HVAC or lighting systems to shift loads between peak and off-peak power periods—optimizing energy costs and reducing strain on the electrical grid.

4. Precautions

• Control Voltage Matching: Ensure the device’s rated control voltage (e.g., 220V DC) matches the system’s control circuit voltage—incorrect voltage will damage the electromagnetic coil or prevent actuation.
• Interlocking Safety: When integrating with circuit breakers, install mechanical or electrical interlocks to prevent simultaneous closure of conflicting diverter paths (e.g., main and backup feeders)—this avoids short-circuits in the power system.
• Wiring Best Practices: Use shielded twisted-pair cables for control wiring; route control cables separately from high-voltage power cables (≥50cm spacing) and connect cable shields to protective ground (single-point grounding) to minimize EMI.
• Reset Procedure Compliance: For manual reset models, always confirm the diverter circuit is de-energized before resetting—resetting under load may cause mechanical damage or electrical arcing.
• Environmental Limits: Do not install in areas with temperatures exceeding 60℃ or humidity above 90% RH (non-condensing); use a climate-controlled switchgear cabinet in harsh environments to maintain performance.
• Regular Maintenance: Periodically test the actuation function (via control voltage application) and inspect electrical connections for tightness; clean the reset lever and LED indicator to prevent dust buildup from impairing operation

The structure and details of the product：

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