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ABB S201-B6 2CDS251001R0065 Miniature Circuit Breaker  

1. Key Parameters

• Order Code/Part Number: 2CDS251001R0065 (unique identifier for procurement and documentation)
• Product Series: S201 (ABB’s standard single-pole miniature circuit breaker series)
• Pole Configuration: 1 pole (for single-phase AC circuits)
• Rated Current (Iₙ): 6A (continuous operating current rating)
• Rated Voltage (Uₙ):
  • AC: 230V/400V (50/60Hz, compliant with IEC standards)
  • DC: Not applicable (AC-only design)
• Breaking Capacity (Iₙₜ): 6kA (at 230V AC; ability to safely interrupt short-circuit currents up to 6kA)
• Tripping Curve: "B" curve (trips at 3~5×Iₙ for short-circuits; suitable for resistive/capacitive loads, e.g., lighting, small appliances)
• Protection Functions:
  • Overload protection (thermal tripping mechanism: trips slowly when current exceeds Iₙ for extended periods)
  • Short-circuit protection (electromagnetic tripping mechanism: trips instantly when current reaches 3~5×Iₙ)
• Dimensions (W×H×D): 18mm × 89mm × 65mm (compact single-pole size, saves distribution board space)
• Mounting Method: DIN rail mounting (compatible with 35mm standard DIN rails in electrical distribution boards)
• Protection Class: IP20 (front panel; complies with IEC 60529)
• Compliance Standards: IEC 60898-1 (low-voltage circuit breakers for household and similar installations), EN 60898-1, UL 489 (for North American markets, optional)

2. Product Features

• Compact & Space-Saving: 18mm narrow width (single-pole) allows high-density installation in distribution boards—ideal for residential or commercial buildings with limited panel space.
• Reliable Dual Protection: Combines thermal (overload) and electromagnetic (short-circuit) tripping mechanisms to provide comprehensive circuit safety, preventing overheating of wires and equipment damage.
• B-Curve Tripping Characteristic: Optimized for low-inrush loads (e.g., LED lighting, computers, small motors), avoiding false tripping from normal startup currents while ensuring fast response to short-circuits.
• Easy Installation & Operation: Tool-less DIN rail mounting and clear on/off toggle switch (with visual position indicator) simplify installation and maintenance; the switch features a secure snap-on design to prevent accidental operation.
• Durable Construction: Flame-retardant thermoplastic housing (UL94 V-0 rating) resists high temperatures and prevents flame spread in case of internal faults; corrosion-resistant metal components ensure long service life (≥10,000 operations).
• Wide Compatibility: Works with standard 230V/400V AC electrical systems, compatible with ABB’s S200 series accessories (e.g., auxiliary contacts, shunt trips) for expanded functionality (e.g., remote control, alarm signaling).

3. Application Fields

• Residential Buildings: Protects branch circuits for lighting, power outlets, small appliances (e.g., refrigerators, TVs), and HVAC components (e.g., mini-split air conditioners) in homes and apartments.
• Commercial Spaces: Used in offices, retail stores, and hotels to safeguard circuits for lighting systems, POS terminals, printers, and small HVAC units (e.g., ceiling fans, window ACs).
• Light Industrial Facilities: Protects low-power circuits for control panels, small pumps, conveyors, and test equipment in workshops, laboratories, and small manufacturing plants.
• Infrastructure & Public Buildings: Safeguards circuits for public lighting, emergency exit signs, and low-voltage control systems in schools, hospitals, and transportation hubs (e.g., subway stations).
• Data Centers & Telecom Rooms: Protects auxiliary circuits for lighting, environmental monitoring sensors, and low-power IT peripherals (e.g., network switches, printers) in data center facilities.

4. Precautions

• Load Matching: Ensure the rated current (6A) matches the circuit’s maximum expected load—overloading (e.g., connecting high-power devices like space heaters) will cause frequent tripping or damage the MCB.
• Voltage Compatibility: Use only in AC circuits (230V/400V); do not connect to DC systems, as this will disable the tripping mechanism and create safety hazards.
• Tripping Curve Selection: Confirm the "B" curve is suitable for the load type—avoid using for high-inrush loads (e.g., large motors, welding machines), which require "C" or "D" curve MCBs to prevent false tripping.
• Installation Safety: Always disconnect the main power supply before installing or replacing the MCB; ensure proper wire termination (use recommended wire gauge: 1.5mm²~4mm² for 6A) to avoid loose connections and overheating.
• Maintenance Checks: Periodically inspect the MCB for physical damage (e.g., cracks, discoloration) and test the tripping function (using a dedicated test tool, if available); replace the MCB immediately if it fails to trip or shows signs of wear.
• Accessory Compatibility: When adding accessories (e.g., shunt trips), use only ABB-approved S200 series accessories to ensure electrical compatibility and avoid compromising the MCB’s protection performanc

The structure and details of the product：

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