SIEMENS
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Siemens IC 10 · 2017
Motor Starter Protectors/Circuit Breakers
SIRIUS 3RV1 Molded Case Motor Starter Protectors up to 800 A
General data
7
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Benefits
•
High short-circuit breaking capacity in the feeder
•
Optimum usability in motor feeders for the special voltages
440 V, 480 V, 550 V and 690 V
•
Compact design
•
The releases are available both in purely magnetic
(up to 32 A) and in solid-state versions (100 A to 800 A).
•
Available for motor or starter protection (short-circuit
protection alone)
■
Application
Operating conditions
The 3RV1 molded case motor starter protectors for up to 800 A
can be operated at ambient temperatures between -25 °C and
+70 °C. They can be used according to IEC 60721-2-1 in the
most difficult environmental conditions with a hot and damp
climate.
Since operational currents, starting currents and current peaks
are different even for motors with identical power ratings due to
the inrush current, the motor ratings in the selection tables are
only guide values. The specific rated and start up data of the
motor to be protected is always paramount to the choice of the
most suitable molded case motor starter protectors.
The 3RV1 molded case motor starter protectors up to 800 A
have not been tested for use with frequency converters. The
possibility of premature tripping in such applications cannot
therefore be ruled out.
Possible uses
The 3RV1 molded case motor starter protectors for up to 800 A
are suitable as switching and protection devices for motors. The
following versions are available:
•
For motor protection;
the overload and short-circuit releases are designed for opti-
mized protection and direct-on-line starting of three-phase
AC
squirrel-cage motors. The motor starter protectors have an
electronic release which not only provides short-circuit and
overload protection but is also sensitive to phase failure and
phase asymmetry and offers protection in the event of rotor
blockage.
•
For starter combinations;
these molded case motor starter protectors are used for short-
circuit protection in combinations of circuit breaker, motor
contactor and overload relay. They are equipped with a purely
magnetic release (up to 32 A) or a solid-state release
(100 A to 800 A).
Standards and specifications
The overcurrent releases for motor protection comply with
IEC 60947-4-1. Isolating features are also compliant with
IEC 60947-2.
The 3RV1 molded case motor starter protectors comply in addi-
tion with IEC 60068-2-6 (shock and vibration strength) and are
certified for the specifications of the major marine classification
societies:
• RINA
•
Det Norske Veritas
•
Bureau Veritas
•
Lloyds Register of Shipping
•
Germanischer Lloyd
•
American Bureau of Shipping
Use of SIRIUS protection devices in conjunction with
IE3/IE4 motors
Note:
For the use of 3RV1 motor starter protectors/circuit breakers in
conjunction with highly energy-efficient IE3/IE4 motors, please
observe the information on dimensioning and configuring,
see
Application Manual
.
For more information,
see Preface on page 7.
© Siemens AG 2016