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ABB SH201L (Order Code: 2CDS241001R0164) Miniature Circuit Breaker  

1. Key Parameters

• Product Model: SH201L
• Order Code/Part Number: 2CDS241001R0164 (unique identifier for procurement and compatibility verification)
• Product Series: ABB SH200 series (miniature circuit breakers for low-voltage distribution)
• Core Function: Protects low-voltage circuits from overcurrent and short-circuit faults; enables manual circuit isolation for maintenance
• Electrical Specifications:
  • Rated Voltage (Ue): 230/400V AC (single-phase/three-phase compatible)
  • Rated Current (In): 6A (fixed; optimized for low-power circuits like lighting or small appliances)
  • Tripping Curve: C-curve (trips at 5×In~10×In; ideal for resistive/capacitive loads: lighting, HVAC, household appliances)
  • Breaking Capacity (Icu): 6kA (at 230/400V AC; safely interrupts short-circuit currents up to 6kA)
  • Rated Frequency: 50/60Hz (universal for global power grids)
  • Insulation Voltage (Ui): 690V AC (ensures electrical isolation between live parts and enclosure)
  • Dielectric Strength: 2.5kVrms (1-minute test between live parts and ground)
• Mechanical Specifications:
  • Pole Configuration: 1-pole (protects single live conductor; neutral wire requires separate protection if needed)
  • Mounting: DIN rail-mounted (compatible with 35mm standard DIN rails per EN 60715)
  • Dimensions (W×H×D): 18mm × 89mm × 74mm (slim 18mm width; saves space in distribution boards)
  • Operating Mechanism: Toggle switch (ON/OFF position; tripped state indicated by middle position)
  • Reset Method: Manual (toggle switch must be reset to OFF before switching ON after tripping)
  • Weight: Approximately 80g
• Environmental Ratings:
  • Operating Temperature Range: -25℃~+60℃ (-13℉~140℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6; no unintended tripping)
  • Shock Resistance: 30g acceleration (11ms duration, IEC 60068-2-27; maintains structural integrity)
• Compliance Standards: IEC 60898-1 (miniature circuit breakers for household and similar use), EN 60898-1, UL 489 (North American safety standard), CE, RoHS

Note: The "L" suffix in "SH201L" indicates compliance with enhanced breaking capacity or regional safety requirements (varies by market; confirm with local ABB documentation for region-specific details).

2. Key Features

• Precise Overcurrent & Short-Circuit Protection: C-curve tripping characteristic (5×In~10×In) balances sensitivity and robustness—avoids nuisance tripping from temporary load surges (e.g., HVAC startup) while rapidly interrupting short-circuit currents (≤0.1s at 10×In) to prevent equipment damage or fire.
• Space-Saving DIN Rail Design: 18mm slim width allows dense installation in distribution boards (e.g., residential consumer units, commercial panelboards)—critical for applications with limited space.
• Universal Voltage/Frequency Compatibility: 230/400V AC and 50/60Hz operation ensures global usability, eliminating the need for region-specific models in multi-market projects.
• Intuitive Status Indication: Toggle switch position clearly signals circuit status:
  • ON: Switch aligned with "I" mark (circuit energized).
  • OFF: Switch aligned with "O" mark (circuit isolated).
  • Tripped: Switch in middle position (fault detected; power interrupted).
• Robust Construction: Flame-retardant thermoplastic housing (UL94 V-0) resists ignition and high temperatures—complies with fire safety standards for enclosed electrical equipment. Copper alloy current-carrying parts ensure low resistance and long-term reliability.
• Easy Installation & Maintenance: Tool-less DIN rail mounting and push-in wire terminals (accepts 1.5mm²~4mm² copper conductors) simplify installation. Manual reset and clear tripping indication reduce troubleshooting time during faults.
• RoHS Compliance: Free of hazardous substances (lead, mercury, cadmium) to meet global environmental regulations—suitable for eco-sensitive applications like green buildings or medical facilities.

3. Application Fields

• Residential Electrical Systems: Installed in consumer units (breaker boxes) to protect individual circuits:
  • Lighting circuits (LED, incandescent, or fluorescent fixtures).
  • Small appliance circuits (refrigerators, microwaves, televisions).
  • Low-power HVAC circuits (window air conditioners, small heaters).
• Commercial Buildings: Used in panelboards for offices, retail stores, and hotels to protect:
  • Office equipment circuits (computers, printers, copiers).
  • Lighting systems (recessed lights, signage, emergency lighting).
  • Retail display circuits (LED screens, product showcases).
• Light Industrial Applications: Deployed in control panels for small-scale manufacturing or workshops to protect:
  • Low-power motor circuits (small pumps, fans, conveyors).
  • Instrumentation circuits (sensors, meters, small control devices).
  • Bench tool circuits (drills, grinders, soldering stations).
• Medical Facilities (Non-Critical Areas): Used in non-patient-care zones (offices, storage rooms) to protect standard electrical loads—complies with safety standards for low-risk medical environments.
• Data Centers (Auxiliary Circuits): Protects auxiliary systems (lighting, office areas, cooling fans) in data centers—complementary to high-grade protection for critical IT infrastructure.
• Renewable Energy Systems (Small-Scale): Integrated into residential solar inverters or small wind turbine systems to protect low-voltage DC/AC conversion circuits—ensuring safe operation of distributed energy resources.

4. Precautions

• Current Rating Matching: Ensure the MCB’s rated current (6A) matches the maximum load of the protected circuit. Overloading (e.g., connecting a 10A appliance to a 6A circuit) causes frequent tripping or permanent MCB damage.
• Pole Configuration & Neutral Protection: The 1-pole design protects only the live conductor. For circuits requiring neutral protection (e.g., sensitive electronics), pair with a separate neutral MCB or use a 2-pole model (e.g., SH202L).
• Tripping Curve Compatibility: C-curve is designed for resistive/capacitive loads. For inductive loads (e.g., large motors) that cause high inrush currents, use a D-curve MCB (e.g., SH201D) to avoid nuisance tripping.
• Wiring Safety:
  • Use copper conductors (1.5mm²~4mm²) and tighten push-in terminals to the specified torque (0.8~1.2N·m) to prevent loose connections (which cause overheating).
  • Do not exceed the maximum wire length for the circuit (calculate based on voltage drop; ≤5% for 230V AC circuits).
• Installation Environment:
  • Install in enclosed distribution boards to protect from dust, moisture, and direct sunlight. Avoid temperatures outside -25℃~+60℃ or humidity >95% RH (non-condensing).
  • In corrosive environments (e.g., coastal areas), use anti-corrosion coatings or select stainless steel accessories for the distribution board.
• Fault Handling:
  • After tripping, identify the fault cause (overload/short circuit) before resetting. Do not force the toggle switch—this may damage the tripping mechanism.
  • If the MCB trips immediately after reset, check for short circuits (e.g., damaged wires, faulty appliances) and repair before re-energizing.
• Maintenance & Replacement:
  • Inspect annually for signs of damage (cracks, discoloration, loose terminals). Replace if any damage is found—damaged MCBs may fail to trip during faults, risking fire.
  • Do not modify the MCB (e.g., adjusting tripping settings) or use it for unapproved applications (e.g., DC circuits beyond 250V DC)—this voids safety certifications and creates hazards

The structure and details of the product：

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