The auxiliary switches can be designed as positively driven contacts in 3RH contactor relays or also as mirror contacts in the case of 3RT power contactors.

Siemens Auxiliary Switch 3RT19 Product Specifications:

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product brand name SIRIUS
Article Number 3RT1926-2FL11
product designation auxiliary switch
design of the product With OFF-delay
product type designation 3RT19
General technical data
size of contactor can be combined company-specific S0 … S12
product component semi-conductor output No
product extension required remote control No
product extension optional remote control No
insulation voltage for overvoltage category III according to 300 V
IEC 60664 with degree of pollution 3 rated value
degree of pollution 3
surge voltage resistance rated value 4 000 V
shock resistance according to IEC 60068-2-27 11g / 15 ms
vibration resistance according to IEC 60068-2-6 10 … 55 Hz: 0.35 mm
mechanical service life (switching cycles) typical 10 000 000
electrical endurance (switching cycles) at AC-15 at 100 000
230 V typical
adjustable time 0.05 … 1 s
relative setting accuracy relating to full-scale value 15%
minimum ON period 200 ms
recovery time 150 ms
reference code according to IEC 81346-2 K
relative repeat accuracy 1%
Substance Prohibitance (Date) 7/1/2006
Product Function
product function star-delta circuit No
Control circuit/ Control
type of voltage of the control supply voltage AC
control supply voltage 1 at AC
● at 50 Hz 200 … 240 V
● at 60 Hz 200 … 240 V
control supply voltage frequency 1 50 … 60 Hz
operating range factor control supply voltage rated
value at DC
● initial value 0.85
● full-scale value 1.1
operating range factor control supply voltage rated
value at AC at 50 Hz
● initial value 0.85
● full-scale value 1.1
operating range factor control supply voltage rated
value at AC at 60 Hz
● initial value 0.85
● full-scale value 1.1

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Weight 0.094 kg
Dimensions 5.0 × 10.5 × 4.7 cm