Datasheet

7
49
Technical data
Control and signalling devices line
Main features
High reliability contact blocks with quadruple
contact points self-cleaning contacts
Gold plated contacts version
Positive opening NC contacts according to
IEC 6097-5-1
General data
Protection degree: IP20 on the terminals according to IEC 60529
Ambient temperature: -40°C +80°C
Mechanical endurance: 20 million operations cycles
Max operating frequency: 3600 operations cycles/hour
Utilization requirements: see page 78
Contact block
Contacts commutation force: 2NO: 1,7 N
2NC: 2 N
1NO+1NC: 2,7 N (NO), 2,2 N (NC)
Actuating force at end travel: 2NO: 3,8 N,
2NC: 3,8 N
1NO+1NC: 4,5 N
Positive opening force: 17 N
Activating speed: min 1 mm/s
max 0,5 m/s
Contacts material: silver contacts (standard)
Contacts for weak current in silver,
1µm thick gold-plating (on request)
Contacts form: “V shape” self-cleaning contacts with
quadruple contact points
Conductors cross section: min 1 x 0,34 mm
2
(1 x AWG 22)
max 2 x 1,5 mm
2
(2 x AWG 16)
Screw terminal driving torque: 0,6 ... 0,8 Nm
Electrical data Utilization categories
Alternate current: AC15 (50÷60 Hz)
Ue (V) 24 48 120 250
Ie (A) 6 6 6 6
Direct current: DC13
Ue (V) 24 48 125 250
Ie (A) 2,5 1,3 0,6 0,3
Thermal current (Ith): 10 A
Rated insulation voltage (Ui): 250 Vac/dc
Protection against short circuits: fuse 10 A 500 V type gG/gL
Rated impulse withstand voltage (U
imp
): 4 kV
Pollution degree: 3
Markings and quality marks:
Approval GOST: POCC IT.AB24.B04512
General characteristics
Positive opening
All NC contacts are suitable for safety applications.
NC contacts have positive opening according to IEC 60947-5-1.
High reliability self-cleaning contacts
“V shape” self-cleaning contacts with quadruple contact points.
This shape, thanks to its quadruple support, allows to reduce the
probability of contact wrong switching. Furthermore it highly
improves
the contacts reliability in
case of dust.
Double contact blocks
Installation for safety applications:
Use only switches marked with the symbol . The safety circuit must always be
connected with the NC contacts (normally closed contacts: 1-2) as stated in the
standard EN 60947-5-1, encl. K, par. 2.
In conformity with standards:
IEC 60947-1, IEC 60947-5-1, IEC 60204-1, EN 60947-1, EN 60947-5-1, EN 60204-1,
UL 508, CSA 22-2 N°14.
In conformity with requirements requested by:
Low Voltage Directive 2006/95/EC, Machinery Directive 2006/42/EC and
Electromagnetic Compatibility 2004/108/EC.
Positive contact opening in conformity with standards:
IEC 60947-5-1, EN 60947-5-1, VDE 0660-206.
Modularity and compact dimensions
The EROUND double
contact blocks are
distinguished by their
more compact dimensions
as compared to the other
double contact blocks
found on the market.
Thanks to their compact
dimensions, these versions
can also be mounted on
the bottom of boxes.
However, these double
contact blocks have the
same vertical overall
dimensions of the
EROUND single contact
blocks: this ensures that
single and double contact
blocks can be piled up
together on several levels,
and can be interchanged
during the installation
stage.