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BETA Monitoring
Monitoring of Electrical Values
5
TT3 voltage relays
13/4
Siemens ET B1 · 10/2008
13
5
TT3 407
5
TT3 408
5
TT3 410
Standards
IEC 60255; DIN VDE 0435-110
Rated control voltage U
c
V AC 230/400
Operating range
(
overload capability)
× U
c
1.1
1.35
1.2
Rated frequency
Hz
50/60
Back-up fuse
Terminals L1/L2/L3
A
2
Response values
Overvoltage:
OFF-switching
× U
c
--
0.9 ... 1.3
--
ON-switching
--
4 %
hysteresis
--
Undervoltage:
OFF-switching
× U
c
0.8
0.7 ... 1.1
--
ON-switching
0.85
4 %
hysteresis
--
Minimum contact load
V; mA 10; 100
Phase asymmetry
Setting accuracy
%
Approx. 5 ... 10
Repeat accuracy
% 1
Phase failure detection
At L1, L2 or L3
ms
20
100
--
OFF delay
s
--
0.1 ... 20
--
Automatic reclosing delay
s
0.2 ... 20
--
--
Rated insulation voltage U
i
Between coil/contact
kV 4
Contacts
contact (AC-11)
A
3
1
4
Electrical isolation
Creepage distances and
clearances
Contact/contact
mm --
4
--
Actuator/contact
mm 4
5.5
Rated impulse withstand voltage U
imp
Actuator/contact
kV > 4
Rated operational power P
s
AC operation:
230
V and p.f = 1
VA 2000
--
--
230
V and p.f = 0.4
VA 1250
--
--
DC operation:
U
e
= 24 V and
I
e
= 6 A W Max. 100
--
--
U
e
= 60 V and
I
e
= 1 A W Max. 100
--
--
U
e
= 110 V and
I
e
= 0.6 A W Max. 100
--
--
U
e
= 220 V and
I
e
= 0.5 A W Max. 100
--
--
Terminals
±
screw (Pozidriv)
1
Conductor cross-sections
•
Rigid, max.
mm
2
2
× 2.5
•
Flexible, with end sleeve, min.
mm
2
0.5
Permissible ambient temperature
°C -20 ... +60
Humidity class
Acc. to IEC 60068-2-30
F
Voltage relays
5
TT3 411
5
TT3 412
Rated control voltage U
c
V AC 230
230/400
Overload capability
× U
c
1.15
1.1
Rated frequency
Hz
50/60
Response values
ON-switching
2 %
hysteresis
4 %
hysteresis
OFF-switching
× U
c
0.9
0.9
Minimum contact load
V/mA 10/100
Phase failure detection
At L1, L2 or L3
ms
--
100
N-conductor monitoring
--
Yes
Rated insulation voltage U
i
Between coil/contact
kV 4
Contacts
NO contacts AC 15
3
3
NC contacts AC 15
2
1
Electrical service life in switching cycles
AC 15, 1 A, 230 V AC
5
× 10
5
Rated impulse withstand voltage
Acc. to IEC 60664-1
kV 4
Degree of pollution
2
Terminals
± screw (Pozidriv)
2
Conductor cross-sections
•
Rigid
mm
2
2
× 2.5
•
Flexible, with end sleeve
mm
2
2
× 1.5
Permissible ambient temperature
°C -20 … +60
Resistance to climate
Acc. to EN 60068-1
20/060/04
© Siemens AG 2008