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ABB

ABB S803S Miniature Circuit Breaker, 3-Pole, 50A, UC-B, 750 V dc DC, 50 kA Breaking Capacity

The ABB S803S Miniature Circuit Breaker, 3-Pole, 50A, UC-B, 750 V dc DC, 50 kA Breaking Capacity offers dependable industrial performance and is suitable for deployment across power distribution, oil and gas, petrochemical, and manufacturing facilities.

ABB S803S Miniature Circuit Breaker, 3-Pole, 50A, UC-B, 750 V dc DC, 50 kA Breaking Capacity
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ABBS80-PNJMZ4
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Product Description

The ABB S803S Miniature Circuit Breaker, 3-Pole, 50A, UC-B, 750 V dc DC, 50 kA Breaking Capacity is a purpose-built industrial product offering consistent performance in challenging conditions.

This product features rugged construction designed to withstand the mechanical stresses and environmental challenges typical of industrial installations. Its compact design allows for efficient space utilization in control panels, distribution boards, and automation enclosures. The unit provides reliable protection and operational control under continuous-duty conditions, reducing maintenance requirements and unplanned downtime.

This product is commonly deployed in oil and gas processing facilities, where reliable electrical protection and control are critical for operational safety. It finds application in power distribution systems, cement manufacturing plants, and petrochemical processing environments. Marine installations, railway infrastructure, and aviation facilities also benefit from the proven performance characteristics of this type of industrial component.

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.

From an operational perspective, this component minimizes the risk of system failure through its reliable switching, protection, or control functionality. Facilities that depend on high availability — including continuous-process industries and critical infrastructure — benefit from the reduced failure rate that quality-engineered components provide. The product also supports predictive maintenance programs, as its known ratings and service intervals allow engineering teams to plan replacements before failures occur. This approach to asset management reduces unplanned downtime and supports overall equipment effectiveness (OEE) targets in industrial facilities.

Industrial professionals seeking reliable, standards-compliant components will find this product well-suited to their requirements. Its design reflects the quality expectations of industrial clients operating in sectors where component failure carries significant operational and safety consequences. Z&F Corporation's supply of this product supports industrial clients with responsive, expert technical sourcing services and a commitment to quality throughout the supply chain.

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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