ABB S803W-SCL100-SR 2CCS803917R0639 S800-SCL-SR Self-resetting Short-Circuit Limiter

Overview The ABB S803W-SCL100-SR is a 3-pole self‑resetting short-circuit current limiter (IEC/UL dual version) of the S800‑SCL‑SR family. It is used as upstream backup protection for S800 series MCBs and motor starters, raising the system short-circuit withstand capability and maintaining power continuity for healthy branches after a fault, widely stocked as spare for wind turbine, industrial MCC and low‑voltage group distribution cabinetsdocs.rs-on....

Features This model is rated 100A, compatible with IEC 690VAC and UL 600VAC applications. The S803W-SCL100-SR achieves selective group protection: it limits the huge short-circuit current, only the faulty downstream breaker trips, and the limiter will automatically reclose after fault clearance so other branches keep running. It is DIN rail mounted, shares the same footprint as S800 MCBs, supports up to 15 downstream motor starters, with built-in current limiting semiconductor elements and status indication. It complies with IEC 60947‑2 / IEC 60947‑4‑1 and UL508ABB Group.

Specs Model: S803W-SCL100-SR Order No.: 2CCS803917R0639 Series: ABB S800-SCL-SR Type: 3P self-resetting short-circuit limiter Rated current Ie: 100 A Voltage: 690VAC (IEC) / 600VAC (UL) Icu: 65kA @480VAC Impulse withstand Uimp: 8 kV Mounting: 35mm DIN rail Protection class: IP20 Certifications: CE, UL, CSA Product status: active LV protection spare

Principle Semiconductor limiting elements suppress the short-circuit peak current instantly. Once the downstream protective device isolates the fault, the limiter automatically resets and restores the supply to the remaining load groups.

Applications The S803W-SCL100-SR is widely deployed in wind turbine pitch/yaw cabinets, industrial motor control centers, pump skids and process isolation distribution panels. It is used for selective group short-circuit backup protection.