General data

■Overview
The 3SB3 series is a range of plastic and metal commanding devices
for front panel mounting and rear wire connection.
3SB3 is of modern industrial design with a very flat construction
and can be installed rapidly by a single person. A metallic type
with a high degree of protection according to IP67 and NEMA 4
is available in addition for the world market.
Standards
IEC 60947-1, EN 60947-1 (VDE 0660 Part 100).
IEC 60947-5-1, EN 60947-5-1 (VDE 0660 Part 200),
IEC 60947-5-5, EN 60947-5-5 (VDE 0660 Part 210)
for EMERGENCY-STOP mushroom pushbuttons.
Design
The 3SB3 series is available:
7 Made of molded plastic in flat, round and square design
7 Made of metal in round design
The operating surfaces of the pushbuttons and indicator lights
are concave. The lenses of the indicator lights are convex. The
flat design makes cleaning easy.

■Application
The devices are climate-proof (KTW 24) and suitable for marine
applications.
AS-Interface solutions
The 3SB3 commanding and signaling devices can be connected
to the AS-Interface communication system quickly and
safely with the help of various solutions.
The following solutions are available:
7 AS-Interface EMERGENCY-STOP pushbuttons
7 AS-Interface enclosures (with 1 to 6 command points)
7 AS-Interface front panel modules (for 4 command points)
For selection and ordering data as well as detailed information,
see catalog IK PI.
Safety EMERGENCY-STOP pushbuttons according to
ISO 13850/EN 418
For controls that comply with IEC 60204-1 or EN 60204-1
(VDE 0113 Part 1) , the mushroom-head pushbuttons of the
3SB3 series are suitable for use as safety EMERGENCY-STOP
pushbuttons.
Safety circuits
The standards IEC 60947-5-1 and EN 60947-5-1 require positive
opening. Hence for the purposes of personal safety, the assured
opening of NC contacts is expressly stipulated for the electrical
equipment of machines in all safety circuits and marked according
to IEC 60947-5-1 with the symbol .
Category 4 according to EN 954-1 can be attained with the
EMERGENCY-STOP mushroom pushbuttons if the corresponding
failsafe evaluation units are selected and correctly installed,
e.g. the 3TK28 safety relays or matching units from the ASIsafe,
SIMATIC or SINUMERIK product ranges.