Description; Overview - Applications And Portfolio; Properties - Siemens SENTRON 3WA1 Manual

Description

2.1

Overview - applications and portfolio

2.1.1

Properties

The 3WA circuit breaker is the new generation of air circuit breakers in the Siemens AG
portfolio. It is based on the proven and robust design of its predecessor 3WL. The
technical data of the 3WA circuit breaker mechanics and the portfolio have been
extended as compared with 3WL, and the electronic components have been completely
redeveloped.
The 3WA circuit breaker is part of the product family of SENTRON protection, switching,
measuring and monitoring devices and covers applications in the rated current range
from 630 A to 6300 A.
• AC devices are available as circuit breakers and non-automatic circuit breakers. For
more information, see Chapter Circuit breakers and non-automatic circuit breakers
(Page 27).
• DC devices are only available as non-automatic circuit breakers.
The 3WA1 circuit breaker has the following properties:
• Three sizes:
– Size 1
– Size 2
– Size 3
• ETU300 electronic trip unit:
– Functionally expandable with an exchangeable option plug
– Easy parameterization of the basic protective functions using rotary switches
• ETU600 electronic trip unit:
– Functionally expandable with an exchangeable option plug and digital function
– Easy parameterization of the basic protective functions using rotary switches or via
– User-friendly parameter assignment or documentation of settings with the
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
AC with a rated current I
AC with a rated current I
DC with a rated current I
AC with a rated current I
packages
four operating keys and a color display
SENTRON powerconfig configuration software via Bluetooth, the USB interface, or
a communications module
from 630 A to 2500 A
n
from 2000 A to 4000 A
n
from 1000 A to 4000 A
n
from 4000 A to 6300 A
n
2
23