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ABB SmiSSline, S400 S400M Miniature Circuit Breaker, 1-Pole, 13A, Type K, Type C, Type B, Type D, 400V ac AC, 250 V dc
The ABB SmiSSline, S400 S400M Miniature Circuit Breaker, 1-Pole, 13A, Type K, Type C, Type B, Type D, 400V ac AC, 250 V dc offers dependable industrial performance and is suitable for deployment across power distribution, oil and gas, petrochemical, and manufacturing facilities.

ABB SmiSSline, S400 S400M Miniature Circuit Breaker, 1-Pole, 13A, Type K, Type C, Type B, Type D, 400V ac AC, 250 V dc
The ABB SmiSSline, S400 S400M Miniature Circuit Breaker, 1-Pole, 13A, Type K, Type C, Type B, Type D, 400V ac AC, 250 V dc offers dependable industrial performance and is suitable for deployment across power distribution, oil and gas, petrochemical, and manufacturing facilities.

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Product Description
The ABB SmiSSline, S400 S400M Miniature Circuit Breaker, 1-Pole, 13A, Type K, Type C, Type B, Type D, 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.
Manufactured to international quality standards, the product undergoes rigorous testing to verify performance under rated conditions. Its rated electrical characteristics ensure compatibility with standard industrial supply voltages and control circuit configurations. The physical design accommodates standard mounting arrangements, simplifying integration into existing infrastructure.
Procurement teams operating in capital-intensive industries recognize the value of specifying proven industrial components from manufacturers with established quality systems. This product's track record in comparable applications provides confidence in its suitability for new projects and system upgrades. Its design supports lifecycle management by providing predictable performance characteristics throughout the rated service period. For facilities running on tight operational margins, reducing the frequency and cost of unplanned maintenance events is a key driver behind the selection of quality-engineered industrial components.
This component is available through Z&F Corporation as part of a broad portfolio of industrial electrical, automation, and safety products. Its consistent performance record and recognized quality make it a trusted specification for industrial projects requiring reliable component supply. Engineers and procurement managers can rely on this product to deliver consistent results in service over its rated operational lifetime, supported by Z&F Corporation's responsive technical and logistics 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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