SIEMENS
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Siemens IC 10 · 2017
Motor Starter Protectors/Circuit Breakers
SIRIUS 3RV2 Motor Starter Protectors/Circuit Breakers
Accessories
Enclosures and front plates
7
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Overview
Enclosures
For stand-alone installation of 3RV20 to 3RV24 motor starter
protectors size S00 (
I
n max
= 16 A), S0 (
I
n max
= 32 A) and S2
(
I
n max
= 65 A), cast aluminum enclosures for surface mounting
and molded-plastic enclosures for flush mounting are available
in various dimensions.
When installed in a molded-plastic enclosure the motor starter
protectors have a rated operational voltage
U
e
of 500 V.
The enclosures for surface mounting have the degree of protec-
tion IP55; the enclosures for flush mounting also comply with the
degree of protection IP55 at the front (the flush-mounted section
complies with IP20).
Enclosures for surface mounting
Enclosures (only for sizes S00 and S0)
All enclosures are equipped with N and PE terminals. There are
two knock-out cable entries for cable glands at the top and two
at the bottom; also on the rear corresponding cable entries are
scored. There is a knockout on the top of the enclosure for
indicator lights that are available as accessories.
The narrow enclosure can accommodate a motor starter
protector without accessories, with transverse auxiliary switch
and with lateral auxiliary switch. There is no provision for
installing a motor starter protector with a signaling switch.
With size S00 to S2 circuit breakers the molded-plastic
enclosures are equipped with a rotary operating mechanism.
The enclosures can be supplied with either a black rotary
operating mechanism or with an EMERGENCY-STOP rotary
operating mechanism with a red/yellow knob.
In the OFF setting, all rotary operating mechanisms can be
locked with up to three padlocks.
Front plates
Motor starter protectors are frequently required to be actuated in
any enclosure. Front plates equipped with a rotary operating
mechanism for 3RV20 to 3RV24 motor starter protectors sizes
S00 to S3 are available for this purpose.
A holder for the motor starter protectors size S00 and S0, into
which the motor starter protectors can be snapped, is available
for the front plates.
Front plate (including holder) for sizes S00 and S0
NSB0_02081a
NSB0_02082a
NSB0_02083a
© Siemens AG 2016