ABB S203-D16 Miniature Circuit Breaker

• 1. Product Overview

  ABB S203-D16 Miniature Circuit Breaker is a three-pole MCB designed for low-voltage distribution systems, providing overload and short-circuit protection. The S203 series ensures fast disconnection of fault currents, protecting electrical equipment and wiring.

  Its compact design supports standard DIN rail mounting and is widely used in residential, commercial, and industrial distribution systems. Type D trip characteristics are suitable for inductive loads such as motors and transformers, providing reliable overcurrent protection.

  ---

  2. Main Technical Data

  General

  • Product type:
    Miniature Circuit Breaker (MCB)

  • Poles:
    3

  • Rated current:
    16 A

  • Trip characteristic:
    Type D (for inductive loads)

  • Rated operating voltage:
    230/400 V AC

  • Rated short-circuit breaking capacity:
    6 kA (IEC/EN standard)

  Electrical Characteristics

  • Operating frequency:
    50/60 Hz

  • Mechanical life:
    ≥ 10,000 operations

  • Electrical life:
    ≥ 4,000 operations (at rated load)

  • Overload protection:
    Thermal-magnetic trip to prevent overload

  • Short-circuit protection:
    Quick magnetic trip to disconnect fault current

  Mechanical & Installation

  • Mounting:
    DIN rail installation

  • Dimensions (mm):
    3 poles × 18 mm width per pole

  • Housing:
    Flame-retardant plastic

  • Operating temperature:
    -5°C to +40°C

  Standards & Certification

  • Compliance:
    IEC/EN 60898-1, IEC/EN 60947-2

  • Protection rating:
    IP20 (front)

  • Application environment:
    Residential, commercial, and industrial low-voltage distribution

  ---

  3. Key Advantages and Features

  1. Reliable overload and short-circuit protection
     Quickly disconnects fault current to protect wiring and equipment.

  2. Suitable for inductive loads
     Type D trip characteristic protects motors, transformers, and similar loads.

  3. Compact design
     Saves space in distribution boards and supports quick DIN rail installation.

  4. High mechanical and electrical life
     Reliable for frequent operations and long-term use.

  5. Easy maintenance
     Modular design allows convenient replacement and expansion.

  6. Compliant with international standards
     IEC/EN certified, ensuring safety and compatibility.

  ---

  4. Typical Applications

  • Residential and commercial distribution systems

  • Small industrial facilities and equipment protection

  • Motor and transformer overload protection

  • Lighting and socket circuit protection

  • Low-voltage distribution boards and control panels

  ---

  5. Installation and Application Notes

  1. Verify current and load compatibility
     Ensure the MCB rated current matches the load to prevent nuisance tripping or overload.

  2. Correct installation orientation
     Mount on standard DIN rail and secure terminals properly.

  3. Environmental requirements
     Avoid high temperature, humidity, and corrosive gas environments.

  4. Periodic inspection
     Test operation and check wiring regularly for long-term safe operation.

  5. Follow standard operating procedures
     Installation and maintenance should comply with IEC/EN standards and local electrical codes.

• 
• 
•  

The structure and details of the product：

Please make an inquiry for more models

ABB TB820V2-eA 3BSE013208R2

ABB AO810V2-eA 3BSE038415R2

ABB AI820-eA 3BSE008544R2

ABB DI821-eA 3BSE008550R2

ABB AO820-eA 3BSE008546R2

ABB DO802-eA 3BSE022364R2

ABB CI801-eA 3BSE022366R2

ABB DI810-eA 3BSE008508R2

ABB AI845-eA 3BSE023675R2

ABB AI801-eA 3BSE020512R2

ABB DI803-eA 3BSE022362R2

ABB DI802-eA 3BSE022360R2

ABB TB40A-eA 3BSE037760R2

ABB CI840A-eA 3BSE041882R2

ABB TB825-eA 3BSE036634R2

ABB BC810K02-eA 3BSE031155R2

ABB PM866K02 3BSE050199R1

ABB PM861AK02 3BSE018160R1

ABB PM866K01 3BSE050198R1

ABB PM851AK01 3BSE066485R1

ABB TB852 3BSC950263R1

ABB PM864AK02 3BSE018164R1

ABB PM856AK01 3BSE066490R1

ABB TK850V007 3BSC95019R1

ABB SB822 3BSE018172R1

ABB PM860AK01 3BSE066495R1

ABB TB850 3BSC950193R1

ABB TK851V010 3BSC950262R1

ABB TK212A 3BSC630197R1

ABB CI867K01 3BSE043660R1

ABB CI861K01 3BSE058590R1

ABB SB821 3BSE018109R1

ABB TB851 3BSC950194R1

ABB MB801V512 3BSE042257R1

ABB PM861AK01-eA 3BSE018157R2

ABB PM861AK02-eA 3BSE018160R2

ABB PM856AK01-eA 3BSE066490R2

ABB PM866K01-eA 3BSE050198R2 6.13

ABB CI867K01 3BSE043660R2

ABB PM851AK01 3BSE066485R2

ABB PM864AK02 3BSE018164R2

ABB CI854AK01 3BSE030220R2

ABB PM860AK01 3BSE066495R2

ABB PM864AK01 3BSE018161R2

ABB PM866K02 3BSE050199R2

ABB TK807F 3BDM000210R1

ABB PM802F 3BSH000002R1

ABB FI840F 3BSH000033R1

ABB EI813F 3BDH000022R1

ABB AM801F 3BDH000040R1

ABB SD812F 3BDH000014R1

ABB AM811F 3BDH000050R1

ABB TK802F 3BDM000213R1

ABB PM803F 3BDH000530R1

ABB FI820F 3BDH000031R1

ABB FI810F 3BDH000030R1

Other best-selling products：