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ABB S252-C10 Miniature Circuit Breaker (MCB) 

1. Key Parameters

• Product Model: S252-C10
• Order Code Reference: Typically procured with ABB accessory kits (e.g., 1SFA616001R1000, including terminal covers and installation guides) for distribution system integration
• Product Series: ABB S200 Series Miniature Circuit Breakers (2-Pole, C-Type Trip Curve)
• Core Function: Protects low-voltage circuits from overload and short-circuit faults; automatically trips to interrupt power when current exceeds rated limits; ensures safe operation of electrical equipment and wiring
• Electrical Specifications:

  Parameter	Details	Performance Metrics
  Rated Voltage (Ue)	- Single-phase AC: 230V (line-neutral) - 2-phase AC: 400V (line-line)	Compatible with global low-voltage grids (IEC/UL standards)
  Rated Current (In)	10A	Matches medium-load circuits (e.g., 2.3kW single-phase loads)
  Trip Curve Type	C-Type (IEC 60898-1); Overload trip range: 5×In ~ 10×In (1s ~ 60s); Short-circuit trip range: >10×In (<0.1s)	Ideal for lighting, socket outlets, and small motor circuits (low inrush current)
  Breaking Capacity (Icn)	6kA (at AC 230V); 4.5kA (at AC 400V)	Withstands short-circuit current without device damage
  Pole Configuration	2P (two-pole: Line 1 + Neutral or Line 1 + Line 2); Disconnects both poles simultaneously when tripping	Suitable for 2-wire circuits (e.g., single-phase 230V, 2-phase 400V)
  Power Dissipation	≤1.5W (at full load, 10A)	Low energy loss, reducing heat generation in distribution boards

• Mechanical Specifications:
  • Housing Material: Flame-retardant thermoplastic (UL94 V-0); High-impact resistance (IK08)
  • Dimensions (W×H×D): 18mm × 85mm × 65mm (compact 2-pole design for dense distribution boards)
  • Mounting: DIN rail-mounted (35mm standard rail, TS 35/7.5); Snap-on installation (no tools required)
  • Weight: Approximately 55g
  • Operation Interface: Toggle switch (ON/OFF); Clear visual indication (red = OFF/tripped, green = ON)
  • Terminal Type: Screw-clamp terminals (accepts 0.5mm² ~ 6mm² copper/aluminum wires)
• Environmental Ratings:
  • Operating Temperature Range: -25℃~+60℃ (-13℉~140℉)
  • Storage Temperature Range: -40℃~+85℃ (-40℉~185℉)
  • Humidity Tolerance: ≤95% RH (non-condensing, 40℃; suitable for damp environments like basements)
  • Vibration Resistance: 10~500Hz, 1g acceleration (IEC 60068-2-6; no false tripping)
  • Shock Resistance: 15g acceleration (11ms duration, IEC 60068-2-27; maintains mechanical integrity)
• Compliance Standards: IEC 60898-1 (low-voltage circuit breakers), EN 61000-6-2 (EMC immunity), UL 489 (North American standards), CE, RoHS, GB 10963.1 (Chinese national standard)

2. Key Features

• 2-Pole Full Disconnection: 2-pole configuration disconnects both current-carrying conductors (e.g., Line + Neutral for 230V circuits) simultaneously when tripping—eliminates residual voltage on neutral lines, reducing the risk of secondary electric shock (critical for residential and commercial applications).
• C-Type Trip Curve: Optimized for circuits with low inrush current (e.g., lighting, socket outlets, small transformers); overload trip range (5×In~10×In) avoids false tripping from minor current fluctuations (e.g., LED lighting startup) while ensuring fast response to genuine overloads.
• High Breaking Capacity (6kA): Withstands short-circuit currents up to 6kA without damage—ensures reliable protection even in grid environments with high fault current (e.g., near power distribution transformers).
• Compact DIN Rail Design: 18mm width (2-pole) maximizes space efficiency in distribution boards—allows installation of more circuits in limited cabinet space (e.g., 10+ S252-C10 breakers in a standard 200mm-wide distribution box).
• Flame-Retardant & Impact-Resistant Housing: UL94 V-0 thermoplastic resists combustion during internal arcing; IK08 impact resistance withstands accidental tool bumps in installation/maintenance—enhances safety and durability.
• Global Standard Compliance: Meets IEC 60898-1 (Europe), UL 489 (North America), and GB 10963.1 (China) standards—simplifies procurement for international projects and ensures compatibility with local electrical grids.

3. Application Fields

• Residential Electrical Distribution: Primary application—home circuit protection:
  • Lighting Circuits: Protects single-phase 230V lighting circuits (e.g., 10A for 20+ LED downlights); C-type curve avoids false tripping from LED driver inrush current, ensuring stable illumination.
  • Socket Outlet Circuits: Safeguards 230V power sockets (e.g., living room/bedroom outlets for TVs, computers); 2-pole disconnection eliminates neutral line residual voltage, reducing shock risks for users.
• Commercial Building Electrical Systems: Protects office and retail circuits:
  • Office Workstation Circuits: Shields 230V socket circuits for computers, printers, and monitors; 10A rating supports 4~5 workstations (total load ≤2.3kW), preventing overload from simultaneous device operation.
  • Retail Display Lighting: Protects 230V LED display lighting circuits; compact design fits dense distribution boards in retail backrooms, saving space for other electrical components.
• Light Industrial Control: Safeguards small-scale industrial circuits:
  • Small Motor Circuits: Protects 230V single-phase small motors (e.g., 0.5kW fans, 0.75kW pumps); C-type curve handles motor startup inrush current (≤5×In) without tripping, ensuring reliable motor operation.
  • PLC Auxiliary Circuits: Shields 24V DC power supply input circuits (via step-down transformers); 10A rating supports multiple PLC modules and I/O devices, preventing overload from faulty sensors or actuators.

The structure and details of the product：

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