Electrical Service Life Of Contactor - Siemens SIRIUS M200D Manual

Switching cycles/hour for 3RK1395-6LS71-.AD.(1.5 A to 12 A)
Installation position
Rated current Ie
Ambient temperature
Motor protection
Class 5 (10a)
ED=30 % (8 x I ) / 0.35 s
e
ED=70 % (8 x I ) / 0.35 s
e
ED=30 % (8 x I ) / 0.7 s
e
ED=70 % (8 x I ) / 0.7 s
e
Class 10
ED=30 % (8 x I ) / 0.75 s
e
ED=70 % (8 x I ) / 0.75 s
e
ED=30 % (8 x I ) / 1.5 s
e
ED=70 % (8 x I ) / 1.5 s
e
Duty cycle current rms value = 1.15 x I
1)
Duty cycle limit for motor starter. The motor should be protected against overload here by means of a thermistor.
2)
8.8

Electrical service life of contactor

Service life of main contacts (DSte / RSte) to 5.5 kW
The curves show the contact service life of contactors when switching ohmic and inductive
three-phase loads (AC-1/AC-3) as a function of breaking current and rated operating voltage.
The prerequisite for this are command devices that switch at random, i.e. not synchronously
to the phase angle of the line.
The rated operating current I
times the rated operating current) is determined for a contact service life of at least 200 000
operating cycles.
If a smaller contact service life is sufficient, the rated operating current I
increased.
M200D PROFIBUS/PROFINET
Manual, 08/2014, A5E01577426A/RS-AA/004
Vertical
9 A 9 A
40 °C 50 °C
1) 2) 1) 2)
170 330 170 240
100 280 100 190
85 170 85 120
52 140 52 95
85 160 85 115
52 130 52 90
40 80 40 59
25 67 25 47
→ motor protection
e
in accordance with utilization category AC-4 (breaking of 6
e
8.8 Electrical service life of contactor
Horizontal
9 A 9 A
55 °C 40 °C
1) 2) 1) 2)
170 200 170 280
100 150 100 230
85 100 85 140
52 75 52 120
85 95 80 130
52 70 50 110
40 48 40 67
25 37 25 56
Technical data
9 A 9 A
50 °C 55 °C
1) 2) 1) 2)
170 200 170 170
100 155 100 120
85 105 85 85
52 82 52 62
80 95 80 80
50 75 50 57
40 48 40 40
25 38 25 29
/AC-4 can be
e
183