Siemens SENTRON 3WL10 - Page 20

Bene󹪝ts
The circuit breaker provides many di󹪜erent advantages:
• Low space requirements
The 3WL10 circuit breakers are extremely compact. 3‑pole and 4‑pole devices of size 0 󹪝t into
a 400 mm wide switchboard panel. Two 3‑pole 3WL10 circuit breakers can also be installed
side by side in a 600mm wide switchboard panel.
The 󹪞exibly mountable connections and installation options of the device enable a
considerable amount of space to be saved in the switchboard. For example, due to the
possibility of mounting the bar 󹪞at terminals directly on the front and positioning the device
on the rear in wall-mounted con󹪝guration, which is unusual for an air circuit breaker.
The 3VA27 molded case circuit breakers provide a compact solution up to 1600 A. A spring
charging motor and/or a metering function can optionally be integrated in the device.
• Highly modular design
Components such as auxiliary releases, spring charging motors, electronic trip units, external
current sensors, auxiliary circuit signaling switches, automatic reset devices, and interlocks
can all be exchanged or retro󹪝tted at a later stage, thus allowing the circuit breaker to be
adapted to new, changing requirements.
• Retro󹪝ttable functions for electronic trip units (ETUs)
Upgrading the electronic trip units is possible at any time. This is done simply by replacing the
ETU. For example, the residual current protection (Rc) can be added by replacing the rating
plug in the ETU660.
Rating plugs, the metering function, and communications modules for the electronic trip
units are available for fast and easy retro󹪝tting and adaptation to changing requirements.
Subsequent upgrading of the ETUs of the 3-series to the ETUs of the 6-series is possible.
• Flexible communication / metering function
The use of modern communication-capable circuit breakers opens up completely new
possibilities in terms of startup, parameterization, diagnostics, plant transparency,
maintenance and operation. This allows many di󹪜erent ways of reducing costs and
improving productivity in industrial plants, buildings and infrastructure projects to be
achieved:
– Simultaneous use of up to two di󹪜erent bus systems, such as PROFIBUS, PROFINET,
ModbusTCP, or ModbusRTU
– Fast and reliable parameterization
– Timely information and response can prevent plant stoppages
– E󹪜ective diagnostics management
– Measured values are the basis for e󹪟cient load management, for drawing up power
demand pro󹪝les, and for allocating energy to cost centers
– Preventive maintenance reduces the risk of expensive plant downtimes
– Metering function with a wide range of measured values, such as current, voltage,
energy, power
– The metering function picked o󹪜 inside the circuit breaker enables a small space
requirement, reduced wiring work, the omission of external voltage transformers and
therefore an additional cost reduction.
Description
2.5Basic properties of the circuit breaker (3WL10 / 3VA27)
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 19