S800-SCL-SR is ABB’s innovative self-resetting current limiting module which considerably increases the short-circuit breaking capacity of downstream manual motor starters and high performance MCBs.

The S800-SCL-SR is a self-resetting short-circuit current-limiter. The major advantage of S800-SCL-SR is the ability for continuous group protection. The S800-SCL-SR protects all downstream devices up to 100kA. In case of a fault current in one of the motor circuits the resulting short-circuit current is limited and only the faulty branch is cut off. After the downstream device has tripped, the S800-SCL-SR contacts re-close automatically. All other downstream devices continue to operate without interruption.

Main benefits     

• Maximum system availability by automatic re-closing of the limiter contacts after fault clearing
• Selectivity and back-up protection in one device
• Upgrades systems up to 100kA
• High voltage range up to 690V AC
• Group protection without interruption

Main features

• IEC Version available on 1, 2, 3 poles
• IEC/UL Version available in 3 pole
• HV version available in 3 pole
• Combined with S800S-B/C/D/K/KM, MS/MO325, MS/MO132, MS132-T