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ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16A, Type B, Type C, Type D, Type K, 400V ac AC, 250 V dc
The ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16A, Type B, Type C, Type D, Type K, 400V ac AC, 250 V dc is a professional-grade industrial component designed for reliable performance in demanding environments including power distribution, oil and gas, and process manufacturing applications.

ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16A, Type B, Type C, Type D, Type K, 400V ac AC, 250 V dc
The ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16A, Type B, Type C, Type D, Type K, 400V ac AC, 250 V dc is a professional-grade industrial component designed for reliable performance in demanding environments including power distribution, oil and gas, and process manufacturing applications.

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Product Description
The ABB S400, SmiSSline S400M Miniature Circuit Breaker, 3-Pole, 16A, Type B, Type C, Type D, Type K, 400V ac AC, 250 V dc is a professionally engineered industrial component that provides stable and safe operation in demanding applications.
This unit is constructed using high-grade materials that provide resistance to mechanical wear, thermal stress, and electrical interference. The product meets stringent quality benchmarks, ensuring that it delivers consistent results in high-demand industrial scenarios. Its design minimizes installation complexity while maximizing operational efficiency across the service life of the equipment.
This product serves as a critical component in industrial electrical systems, supporting safe and efficient operation across high-demand environments. From power distribution substations to offshore platforms, its versatility and reliability address the needs of diverse industrial applications. The component supports compliance with industrial safety standards while ensuring uninterrupted operational performance.
The product conforms to applicable IEC and international standards governing industrial electrical components. Its electrical and mechanical ratings ensure compatibility with the voltage levels, current capacities, and environmental conditions typical of industrial installations. The design supports both panel-mount and field installation configurations, providing flexibility for various project requirements.
The ability to source a reliable, standards-compliant component through a reputable distributor contributes directly to project quality and schedule certainty. For engineering contractors and EPC firms, consistent component specifications reduce procurement risk and support repeatable system performance across multiple project sites. The product's design also simplifies spare parts inventory management, as its standardized specifications allow for straightforward substitution and compatibility verification. These practical considerations make it a preferred specification for industrial projects where component reliability directly impacts operational outcomes.
Sourced and supplied by Z&F Corporation, this product is backed by expert technical support and a commitment to industrial quality standards. It represents a proven specification for industrial applications where reliability, safety, and performance consistency are required. For more information about this product, technical specifications, or to request a quotation, contact Z&F Corporation's industrial procurement and supply team.
Frequently Asked Questions
The trip curve — how many times the rated current has to flow before it trips instantly. Type B trips at 3–5×, Type C at 5–10×, and Type D at 10–20×, so the right choice depends on the inrush current of what's connected.
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