Siemens 3WL112 Air Circuit Breaker

Feature & Principle

It belongs to Siemens SENTRON 3WL intelligent air circuit breaker family. Equipped with ETU electronic trip unit, it supports LSI or LSIG multi-stage protection, power metering and fault waveform recording. It can be fixed or withdrawable version, optional CubicleBUS / Profibus communication module for upper system networking. Mechanical and electrical interlock design ensures operation safety, widely used in low voltage switchgear for incoming, bus tie and heavy feeder circuits.

Specifications

Model: 3WL112 Brand: Siemens Series: SENTRON 3WL Frame size: Size I Pole: 3P Rated current In: 1250 A Rated operational voltage: 690 V AC Trip unit: ETU electronic trip unit Structure: Fixed / Withdrawable Standard: IEC 60947-2 Application: Industrial main switchboard, factory power distribution, building power supply Certification: CE

Components & Diagnostics

Main contact assembly, arc extinguishing chamber, ETU trip unit, spring charging mechanism, motor operating device, auxiliary switch, communication expansion interface. Common faults: spring charging failure, contact overheating, false tripping, communication offline, trip unit alarm.

Product Brief

3WL112 air circuit breaker, Siemens low voltage power distribution spare widely used for factory incoming cabinet and low voltage distribution system overhaul and replacement.