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BETA Switching
Timers
5
TT3 18 timers for industrial applications
9/21
Siemens ET B1 · 10/2008
*
You can order this quantity or a multiple thereof.
9
■
Overview
Time relays are primarily used in series applications where the
use of PLC controls is too labor and cost-intensive. Multifunction
relays are now the market standard. Operation is clear, simple
and with various functions.
■
Benefits
•
Suitable for universal use because the devices can be operated
with 12 V to 240 V AC/DC and work across a broad range from
seconds to hours
•
An off-delay without auxiliary power supports expanded
application.
■
Technical specifications
■
Selection and ordering data
5
TT3 185
5
TT3 181
5
TT3 182
5
TT3 183
5
TT3 184
Standards
EN 60255; DIN VDE 0435-110
Supply
•
Rated control supply voltage U
c
V AC 12 ... 240
220 ... 240
110 ... 240
V DC 12 ... 240
--
110 ... 240
-
Operating range
×
U
c
0.8 ... 1.1
•
Rated frequency f
n
Hz
45 ... 400
50/60
•
Rated power dissipation P
v
VA Approx. 1.5
Approx. 5
Approx. 1
Setting ranges
See setting ranges, timing intervals
Recovery time
ms
15 ... 80
Approx. 40
Approx. 100
Contacts
•
Switching channels
-
Rated operational voltage U
e
V AC 250
-
Rated operational current
I
e
A
4
8
5
•
Contact gap
mm contact
-
Minimum contact load
V; mA 10; 300
Rated impulse withstand voltage U
imp
Input/output
kV > 4
Electrical service life
In switching cycles
1
A 1.5 × 10
5
--
1.5
× 10
5
At AC-15
--
1.5
× 10
5
--
Terminals
•
Terminals ± screw (Pozidriv)
2
•
Conductor cross-sections of main current paths
-
Rigid, max.
-
Flexible, with end sleeve, min.
mm
2
mm
2
2
× 2.5
2
× 1.5
Environmental conditions
•
Permissible ambient temperature
°C -40 ... +60
•
Resistance to climate
Acc. to EN 60068-1
40/60/4
Contacts U
e
I
e
U
c
MW DT Order No.
Price
per PU
PG PU PS*/
P. unit
Weight
per PU
approx.
V AC A AC V
Unit(s) Unit(s) kg
Multifunction timers
Programmable for:
response delay; passing make contact function;
delayed pulse generator; clock generator starting
with impulse; off-delay; pulse converter;
passing break contact function; response/off-delay
1
CO 250
4
12 ... 240
DC
12 ... 240
AC
1
}
5
TT3 185
027 1
1
0.065
Delay timers
1
CO 250
8
220 ... 240
AC 1
}
5
TT3 181
027 1
1
0.100
Wiper timers
1
CO 250
8
220 ... 240
AC 1 B
5
TT3 182
027 1
1
0.100
Flashing timers
Pulse time is equal to idle time
1
CO 250
8
220 ... 240
AC 1 B
5
TT3 183
027 1
1
0.100
Off-delay timers
1
CO 250
5
110 ... 240
AC
110 ... 240
DC
1
B
5
TT3 184
027 1
1
0.100
© Siemens AG 2008