3WL air circuit breakers

3WL air circuit breakers switch and protect motors, capacitors, generators, transformers, busbars, and cables. The modular design and uniform accessories make it possible to flexibly adapt the circuit breakers to different applications. Versions in accordance with UL 489 are available for international use.

The electronic trip unit of the air circuit breakers is available in different versions. Protection, measuring, and communications functions are easy to implement, even in existing installations. A rating plug that is fast and easy to replace, for example, makes it possible to adjust the rated current without the time-consuming process of exchanging the converter. Expandable locking devices or mechanisms prevent accidental switching.

3WL air circuit breakers can be equipped with a communications module and integrated into higher-level energy management systems. Auxiliary, signaling, and position switches report condition and fault diagnostics to higher-level control systems, even remotely. The COM35 comminication module may be used for the communication protocols PROFINET IO and Modbus TCP and is compatible with all 3WL air circuit breakers. This makes it particularly suitable for retrofit and expansion of power distribution systems. 

The powerconfig configuration software is the combined commissioning and service tool for communication-capable measuring devices and circuit breakers from the SENTRON portfolio. The PC-based tool makes the parameterization of the devices easier, which gives rise to considerable time savings, particularly when several devices have to be set up. With powerconfig, the 3WL air circuit breakers and 3VA molded case circuit breakers as well as the 7KT/7KM PAC measuring devices with expansion modules can be parameterized, documented, operated and monitored using various communication interfaces.

The powerconfig configuration software enables you to use a single software program for parametrization, documentation, operation, and monitoring. Settings and measured values are conveniently documented and the available devices statuses and measured values are displayed in standardized views. Device data can be stored on a project-oriented basis, and all available parameters are clearly presented – including plausibility testing of the inputs. The design of powerconfig is so user-friendly that no programming knowledge is necessary.

The most important functions of powerconfig are also available in the TIA Portal – and thus directly integrated in the industrial automation environment.