Siemens SINAMICS G130 Engineering Manual page 270

SINAMICS S120 Cabinet Modules
Engineering Information
The breaking capacity / short-circuit breaking capacity of the circuit breakers is 100 kA up to 500 V or 85k A up to
690 V in accordance with switching class H.
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
Apart from these optional supplementary features, the circuit breakers offer additional functions than standard
breakers which make them ideal for application in multi-axis systems. They are equipped with RI suppression for
operation on converters. Various signaling switches also support communication with selected Line Modules 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 – May 2008
270/396
© Siemens AG