SIEMENS
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Siemens IC 10 · 2017
SIRIUS 3SE5, 3SE2 Mechanical Safety Switches
With Separate Actuator
General data
12
■
Overview
Safety switches with separate actuator are used where the
position of doors, covers or protective grilles must be monitored
for safety reasons.
3SE5 safety switches with separate actuator have the same
enclosures as the 3SE5 position switches (modular system).
3SE5 safety switches with head for separate actuator
Design
Enclosure sizes
The 3SE5 safety switches are available in four different
enclosure sizes:
• Plastic enclosures according to EN 50047, 31 mm wide, IP65,
1 cable entry
• Metal enclosure according to EN 50047, 31 mm wide,
IP66/IP67, 1 cable entry
• Plastic and metal enclosures according to EN 50041, 40 mm
wide, IP66/IP67, 1 cable entry
• Plastic enclosure, 50 mm wide, IP66/IP67, 2 cable entries
• Metal enclosure, 56 mm wide, IP66/IP67, 3 cable entries
Also available are safety switches in the 3SE2 series which have
been developed in this form according to general market
requirements:
• Molded-plastic enclosures outside of the standards, enclosure
width 52 mm, IP67
Enclosure versions
Various basic versions can be selected for the enclosures of the
3SE5 series:
•
Available with two or three-pole contact blocks designed as
slow-action contacts
•
Optional LED status display
•
With mounted four or five-pole M12 connector socket
(available for the wide enclosures as an accessory for
self-assembly)
•
With 6-pole connector socket + PE on the metal enclosures
•
Similarly with a combination of connector socket and LED
indicators
•
AS-Interface version with integrated ASIsafe electronics for all
enclosure designs
(see page 12/99)
For a description of the basic switches,
see page 12/5
Operation
The actuator head is included in the scope of supply. For
actuation from four directions it can be adjusted through 4
× 90°.
The switches can also be approached from above.
The actuator heads of the 3SE2243 and 3SE2257 switches with
special enclosures cannot be changed. The switches can be
approached from the two broad sides and from above.
The actuator is not included in the scope of supply of the safety
switches and must be ordered separately from a choice of
different versions to suit the application
(see page 12/61)
.
The actuator is encoded. Simple overruling by hand or auxiliary
devices is impossible.
Radius actuators
The safety switches with radius actuators are particularly
suitable for rotary protective devices. The movable actuation key
allows even small radii to be approached. Damage to the switch
and the actuator due to inaccurate approach is prevented.
Locking devices
A high-grade steel blocking insert for attaching up to eight
padlocks is available for even more security
(see page 12/61)
.
Blocking inserts with padlock
Dust protection
For use in dusty environments, a rubber cap is offered that
protects the actuator entries of the actuator head from dirt
(
see page 12/61)
.
Contact reliability
The contact blocks ensure an extremely high contact stability.
This applies even when the devices are switching low voltages
and currents, e. g. 1 mA at 5 V DC.
Positive opening
q
The NC contacts of the switch are forced open mechanically,
positively-driven and reliably by the plunger. This is referred to
as "positive opening".
© Siemens AG 2016