Datasheet
3RV Motor Starter Protectors/Circuit Breakers up to 100 A
Accessories
Rotary operating mechanisms
30
Siemens · 2010
■
Overview
Door-coupling rotary operating mechanisms
Motor starter protectors with a rotary operating mechanism can
be mounted in a control cabinet and operated externally by
means of a door-coupling rotary operating mechanism. When
the cabinet door with motor starter protector is closed, the ope-
rating mechanism is coupled. When the motor starter protector
closes, the coupling is locked which prevents the door from
being opened unintentionally. This interlock can be defeated by
the maintenance personnel. In the Open position, the rotary ope-
rating mechanism can be secured against reclosing with up to
3 padlocks. Inadvertent opening of the door is not possible in
this case either.
3RV19 26-0K door-coupling rotary operating mechanism
3RV29 26-2B door-coupling rotary operating mechanism for arduous
conditions
Remote motorized operating mechanisms
3RV1 motor starter protectors are manually operated controls.
They automatically trip in case of an overload or short-circuit. In-
tentional remote-controlled tripping is possible by means of a
shunt trip unit or an undervoltage trip unit. Reclosing is only pos-
sible directly at the motor starter protector.
The remote motorized operating mechanism allows the motor
starter protectors to be opened and closed by electrical com-
mands. This enables a load or an installation to be isolated from
the network or reconnected to it from an operator panel.
If the motor starter protector is tripped as a result of overload or
short-circuit, it will be in tripped position. For reclosing, the re-
mote motorized operating mechanism must first be set manually
or electrically to the 0 position (electrically by means of the Open
command). Then it can be reclosed.
The remote motorized operating mechanism is available for mo-
tor starter protectors of size S2 (I
nmax
= 50 A) and S3
(I
nmax
= 100 A) that are designed for control voltages of
230 V AC and 24 V DC. The motor starter protector is fitted into
the remote motorized operating mechanism as shown in the dra-
wing.
In the "MANUAL" position, the motor starter protector in the re-
mote motorized operating mechanism can continue to be swit-
ched manually on site. In the "AUTOMATIC" position, the motor
starter protector is switched by means of electrical commands.
The switching command must be applied for a minimum of
100 ms. The remote motorized operating mechanism closes the
motor starter protector after a maximum of 1 second. On voltage
failure during the switching operation it is ensured that the motor
starter protector remains in the OPEN or CLOSED position. In the
"MANUAL" and "OFF" position, the remote motorized operating
mechanism can be locked with a padlock.
RESET function
The RESET button on the motorized operating mechanism ser-
ves to reset any 3RV19 21-1M signal switch that might be
installed.
3RV19 .6-3A.. remote motorized operating mechanism
NSB01078
NSB01079
NSB00007