Products

ABB S203MB4 Miniature Circuit Breaker 10 kA 3-P 40A 400V B-Curve

Product Code: S203MB4

  • Rated for 40 A and 400 V operation
  • Compatible with 3-pole systems
  • Breaking capacity of 10kA
  • IP20/IP40 protection rating
  • Meets IEC/EN, CSA, UL standards
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Specifications

Product Type Miniature Circuit Breaker
Brand ABB
Series S200M
Ambient Temperature -25 to 55 deg C Operation, -40 to 70 deg C Storage
Curve Type B
Degree of Protection IP20/IP40
Depth 69 mm
Electrical Durability 20000 Cycles, 10000 Cycles
Height 88 mm
Housing Colour RAL 7035 Grey
Number of Poles 3
Power Loss 14.4 W
Rated Current 40 A
Rated Frequency 50/60 Hz
Rated Insulation Voltage 440 V
Rated Short Circuit Current 10 kA
Rated Voltage 400 V
Standards and Approvals IEC/EN 60898-1, CSA 22.2 No. 235, IEC/EN 60947-2, UL 1077
Terminal Type Screw Clamp
Tightening Torque 2.8 N-m
Width 52.5 mm

Description

<p>When selecting a circuit breaker for industrial and commercial applications, it’s crucial to focus on specifications that ensure safety, reliability, and efficiency. This particular model offers a robust set of features tailored for professionals who demand consistent performance.</p><p>The circuit breaker is rated for a current of 40 A, making it suitable for medium-load applications. It supports a rated voltage of 400 V with an insulation voltage up to 440 V, ensuring reliable operation under standard conditions. With a breaking capacity of 7.5 kA, this device efficiently interrupts fault currents without compromising system integrity.</p><p>It features three poles and adheres to the B curve type, which means it&amp;#39;s designed to trip quickly in response to short-circuit conditions while allowing minor surges typical in motor start-ups or lighting systems. The product meets several international standards including IEC/EN 60898-1 and UL 1077 among others, guaranteeing compliance with global electrical safety requirements.</p><p>The physical dimensions are compact with a width of 52.5 mm, height of 88 mm, and depth of 69 mm—facilitating easy installation even in space-restricted environments. Its degree of protection ranges from IP20 to IP40 depending on the enclosure used; thus offering flexibility based on environmental exposure needs.</p><p>Screw clamp terminals provide secure connections with a tightening torque specification at 2.8 N-m ensuring stable contact over time—a critical factor in maintaining operational integrity especially in vibration-prone settings.</p><p>Power loss is minimized at just 14.4 W during operation which contributes positively towards energy efficiency considerations within your electrical system designs.</p><p>For durability under varying conditions: electrical endurance is rated up to an impressive 20000 cycles (10000 cycles under more demanding scenarios). This longevity ensures reduced maintenance intervals translating into lower overall lifecycle costs.</p><p>Operating temperature ranges from -25&amp;#176;C to +55&amp;#176;C while storage can handle extremes between -40&amp;#176;C and +70&amp;#176;C—making it versatile across different climatic zones found throughout Australia’s diverse environment.</p><p>Lastly its housing color is RAL 7035 grey providing not only aesthetic uniformity within control panels but also aiding identification amidst other equipment components through standardized coloring practices common in industrial setups.</p><p>This circuit breaker stands out as an ideal choice when balancing technical demands against practical implementation needs across various sectors such as manufacturing facilities or commercial infrastructures where reliability cannot be compromised.</p>

Documents

  • IPD Product Catalogue

    IPD Product Catalogue V17
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