Siemens SINAMICS G130 Engineering Manual page 416

SINAMICS S120 Cabinet Modules
Engineering Information
The short-circuit breaking capacity of the installed class H circuit breakers is 100 kA with line voltages of < 500 V or
85 kA with line voltages of up to 690 V.
The circuit breakers for S120 Cabinet Modules are also equipped with a motorized operating mechanism which
allows automatic reclosing or breaker closing from a control station. It can be controlled by means of a 208 - 240 V
AC 50/60 Hz or 220-250 V DC signal.
To facilitate operation of the Line Connection Modules, the circuit breaker is equipped with additional standard
features. This can be identified by the supplementary codes appended to the breaker's order number.
The following additional equipment features are supplied:
Standard options of supplied circuit breakers
In addition to these optional supplementary features, the circuit breakers offer functions which are not available with
standard breakers and which make them ideal for application in multi-axis systems. They are equipped with RFI
suppression for operation on converters. Various signaling switches also support communication with the selected
Line Module and therefore optimize the breakers for integration in the plant periphery. The breakers are also fitted
with a special door sealing frame to render the units suitable for application in Line Connection Modules in
compliance with the selected protection class.
Definition of terms
Motorized operating mechanism: For automatic loading of the integrated storage spring. It is activated if the storage
spring has been unloaded and control voltage is present. Switches off automatically when the spring is loaded.
Manual actuation of the storage spring is independent of the motor operating mechanism. This allows remote closing
operations in combination with the closing solenoid.
"Tripped" indicator: If the circuit breaker has tripped as a result of overload, short circuit or ground fault, this condition
can be signaled by the "Tripped" indicator.
"Ready to close" indicator: SENTRON WL circuit breakers are equipped as standard with an optical "Ready to close"
indicator. The circuit breakers used also allow the "ready to close" condition to be annunciated by a signaling switch.
Sealing cap over button "Electrical ON": The "Electrical ON button" is fitted as standard with a sealing cap.
Locking bracket for "OFF": The locking bracket for "OFF" can be covered with up to 4 bracket locks Ø 6 mm. The
circuit breaker cannot then be closed mechanically and the disconnector condition in the OFF position is fulfilled.
For Cabinet Modules with degree of protection IP54, shrouding covers are installed as standard in front of the circuit
breaker to meet the stringent requirements of this degree of protection.
SINAMICS Engineering Manual – November 2015
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Ó Siemens AG