Siemens 3WL1110 SENTRON 3WL ACB Air Circuit Breaker

Feature & Principle

It is a classic low voltage air circuit breaker of Siemens SENTRON 3WL platform. It can realize main circuit switching and comprehensive protection of power distribution system. Adopts modular design, electronic trip unit can be replaced on site, supporting adjustable overload, short delay, instantaneous and earth fault protection. It can be equipped with motor operating mechanism, auxiliary contact, communication module for remote monitoring and SCADA linkage. Fixed type and withdrawable type two structures are available for selection. This series is phased out, 3WA is the replacement model.

Specifications

Model: 3WL1110 Brand: Siemens Series: SENTRON 3WL Frame size: Size I Rated current In: 1000A Rated voltage Ue: up to 690V AC Trip unit: ETU27 / ETU45 / ETU76 optional Structure: Fixed / withdrawable Communication: Modbus RTU, Profibus DP optional Application: Low voltage main incoming cabinet, power plant, petrochemical, factory distribution MCC Certification: CE, IEC

Components & Diagnostics

Main contact assembly, arc extinguishing chamber, electronic trip unit, operating mechanism, energy storage spring, auxiliary switch, current transformer. Common faults: contact ablation, energy storage failure, trip unit misoperation, communication loss, coil burnout.

Product Brief

3WL1110 air circuit breaker, Siemens SENTRON 3WL low voltage distribution spare widely used for industrial main power cabinet overhaul and replacement.