ABB S800 Industrial Miniature Circuit Breaker

The ABB S800 Industrial Miniature Circuit Breaker is ABB's heavy-duty DIN-rail MCB range, engineered to bridge the gap between standard 6 kA residential MCBs and full MCCBs in industrial panel applications requiring up to 125 A and breaking capacities up to 50 kA. The S800 series covers rated currents from 25 A to 125 A in 1P, 2P, 3P, and 4P configurations, with trip curve options B (2–3× In), C (5–10× In), and D (10–20× In) covering everything from capacitor switching to motor protection to highly inductive welding equipment circuits. Its compact DIN-rail footprint — three modules wide per pole — fits in standard industrial distribution panels without the space penalty of a full MCCB, while the 50 kA breaking capacity (S803B model) satisfies the fault level requirements at secondary and tertiary distribution points in most Saudi Arabian industrial facilities.

The S800 technical design prioritises reliability and accessory integration. The front-mounted auxiliary contact block, shunt trip release, and undervoltage release snap directly onto the MCB body without tools, enabling remote tripping and supervision functions essential for motor control center and fire safety panel applications. An S800PV variant with DC-rated breaking capability to 1500 V serves the solar photovoltaic string protection market, which is growing rapidly in Saudi Arabia's commercial solar sector. The S800-SC (selectivity coordinator) allows parallel operation of S800 MCBs at high fault currents without nuisance tripping of upstream devices, a feature increasingly required in Saudi Arabia's compact industrial panels where traditional selectivity margins cannot always be maintained.

The S800 Saudi Arabia is the standard industrial feeder MCB in motor control centers, distribution boards, and machine panels throughout the Kingdom. ARAMCO plant electrical standards specify S800 MCBs for feeder protection in MCC outgoing circuits up to 125 A, while SABIC and SEC project specifications routinely list the S800 as an approved device for industrial distribution. Machine builders in Riyadh and Jeddah use S800 MCBs for control power transformer secondary protection, where the D-curve characteristic handles the high inrush current of instrument transformers without requiring an oversized breaker. The S800PV variant is widely used in commercial solar installations across Saudi Arabia, where DC breaking capability up to 1500 V covers modern utility-scale string inverter configurations.

Razz Middle East maintains comprehensive S800 stock across all current ratings, trip curves, and pole configurations in our in-kingdom warehouse, enabling same-day availability for urgent projects. We carry all S800 accessories including auxiliary contacts, shunt releases, undervoltage releases, and motor drives, and provide full coordination studies to confirm S800 selectivity within your distribution system design.