Product Description; Introduction - Siemens SIRIUS 3RT Series System Manual

SIRIUS 3RV2 motor starter protectors

4.2 Product description

4.2 Product description
4.2.1

Introduction

Applications
3RV2 motor starter protectors are compact current-limiting devices which have been
optimized for load feeders. They are used for switching and protecting three-phase motors
and other loads. The scalable setting ranges mean that a suitable motor starter protector can
provide protection for all standard motors, even at ambient temperatures of > 60 °C. All
3RV2 motor starter protectors are fitted with a rotary operating mechanism.
Functions
The motor starter protectors protect loads against overloads and short circuits. They also
feature a lockable switch to facilitate manual switching on and off (e.g. in the event of repair
work).
System integration
In both electrical and mechanical terms the motor starter protectors are compatible with 3RT
contactors, 3RF solid-state contactors, and 3RW soft starters. They can be integrated in the
feeder by means of direct mounting. 3RV2 motor starter protectors are available in two sizes,
S00 and S0.
Connection systems
The motor starter protectors are available with the following connection system options:
● Screw-type connection system (up to 40 A)
● Spring-loaded connection system (up to 32 A)
● Ring cable lug connection system (up to 32 A)
Accessories
The accessories have been tailored to the motor starter protectors; they can be mounted
easily and without the need for tools.
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SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03