product brand nameSIRIUS
product designationcontactor
product type designation3RT25
General technical data
size of contactorS2
function module for communicationNo
auxiliary switchYes
at AC in hot operating state per pole4 W
without load current share typical6.5 W
type of calculation of power loss current-dependentquadratic
of main circuit with degree of pollution 3 rated value690 V
of auxiliary circuit with degree of pollution 3 rated value690 V
of main circuit rated value6 kV
of auxiliary circuit rated value6 kV
maximum permissible voltage for protective separation between coil and main contacts according to EN 60947-1400 V
at AC11.8 g / 5 ms, 7.4 g / 10 ms
at AC18.5 g / 5 ms, 11.6 g / 10 ms
of contactor typical10 000 000
of the contactor with added electronically optimized auxiliary switch block typical5 000 000
of the contactor with added auxiliary switch block typical10 000 000
reference code according to IEC 81346-2Q
Substance Prohibitance (day/month/year)10/01/2014
Net Weight1.094 kg
Ambient conditions
installation altitude at height above sea level maximum2 000 m
during operation-40 ... +70 °C
during storage-55 ... +80 °C
relative humidity minimum10 %
relative humidity at 55 °C according to IEC 60068-2-30 maximum95 %
Main circuit
number of poles for main current circuit4
number of NO contacts for main contacts2
number of NC contacts for main contacts2
— at ambient temperature 40 °C rated value70 A
— at ambient temperature 60 °C rated value60 A
— per NO contact rated value41 A
— per NC contact rated value41 A
minimum cross-section in main circuit at maximum AC-1 rated value25 mm²
— at 24 V rated value60 A
— at 110 V rated value4.5 A
— at 220 V rated value1 A
— at 440 V rated value0.4 A
— at 24 V rated value55 A
— at 110 V rated value45 A
— at 220 V rated value5 A
— at 440 V rated value1 A
— at 24 V per NC contact rated value35 A
— at 24 V per NO contact rated value35 A
— at 110 V per NC contact rated value1.25 A
— at 110 V per NO contact rated value2.5 A
— at 220 V per NC contact rated value0.5 A
— at 220 V per NO contact rated value1 A
— at 440 V per NC contact rated value0.045 A
— at 440 V per NO contact rated value0.1 A
— at 24 V per NC contact rated value55 A
— at 24 V per NO contact rated value55 A
— at 110 V per NC contact rated value12.5 A
— at 110 V per NO contact rated value25 A
— at 220 V per NC contact rated value2.5 A
— at 220 V per NO contact rated value5 A
— at 440 V per NC contact rated value0.135 A
— at 440 V per NO contact rated value0.27 A
at 230 V per NC contact rated value15 kW
at 230 V per NO contact rated value15 kW
at 400 V per NC contact rated value22 kW
at 400 V per NO contact rated value22 kW
limited to 1 s switching at zero current maximum546 A; Use minimum cross-section acc. to AC-1 rated value
limited to 5 s switching at zero current maximum443 A; Use minimum cross-section acc. to AC-1 rated value
limited to 10 s switching at zero current maximum334 A; Use minimum cross-section acc. to AC-1 rated value
limited to 30 s switching at zero current maximum241 A; Use minimum cross-section acc. to AC-1 rated value
limited to 60 s switching at zero current maximum196 A; Use minimum cross-section acc. to AC-1 rated value
power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor4 W
power loss [W] at AC-3e at 400 V for rated value of the operational current per conductor4 W
at AC5 000 1/h
at AC-1 maximum1 000 1/h
Control circuit/ Control
type of voltage of the control supply voltageAC
at 50 Hz rated value24 V
at 50 Hz0.8 ... 1.1
apparent pick-up power of magnet coil at AC190 V·A
at 50 Hz190 V·A
inductive power factor with closing power of the coil0.72
at 50 Hz0.72
apparent holding power of magnet coil at AC16 V·A
at 50 Hz16 V·A
inductive power factor with the holding power of the coil0.37
at 50 Hz0.37
at AC10 ... 80 ms
at AC10 ... 18 ms
arcing time10 ... 20 ms
control version of the switch operating mechanismAC
Auxiliary circuit
number of NC contacts for auxiliary contacts instantaneous contact1
number of NO contacts for auxiliary contacts instantaneous contact1
operational current at AC-12 maximum10 A
at 230 V rated value6 A
at 400 V rated value3 A
at 500 V rated value2 A
at 690 V rated value1 A
at 24 V rated value10 A
at 48 V rated value6 A
at 60 V rated value6 A
at 110 V rated value3 A
at 125 V rated value2 A
at 220 V rated value1 A
at 600 V rated value0.15 A
at 24 V rated value10 A
at 48 V rated value2 A
at 60 V rated value2 A
at 110 V rated value1 A
at 125 V rated value0.9 A
at 220 V rated value0.3 A
at 600 V rated value0.1 A
contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)
UL/CSA ratings
for 3-phase AC motor at 460/480 V rated value25 hp
contact rating of auxiliary contacts according to ULA600 / P600
Short-circuit protection
design of the miniature circuit breaker for short-circuit protection of the auxiliary circuit up to 230 VC characteristic: 10 A; 0.4 kA
— with type of coordination 1 requiredgG: 160 A (690 V, 100 kA)
— with type of coordination 2 requiredgG: 80 A (690 V, 100 kA)
for short-circuit protection of the auxiliary switch requiredgG: 10 A (690 V, 1 kA)
Installation/ mounting/ dimensions
mounting position+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface
fastening method side-by-side mountingYes
fastening methodscrew and snap-on mounting onto 35 mm DIN rail according to DIN EN 50022
height114 mm
width75 mm
depth130 mm
— forwards0 mm
— backwards0 mm
— upwards0 mm
— downwards0 mm
— at the side0 mm
— forwards0 mm
— backwards0 mm
— upwards50 mm
— at the side10 mm
— downwards50 mm
— forwards0 mm
— backwards0 mm
— upwards50 mm
— downwards50 mm
— at the side10 mm
Connections/ Terminals
for main current circuitscrew-type terminals
for auxiliary and control circuitscrew-type terminals
at contactor for auxiliary contactsScrew-type terminals
of magnet coilscrew terminal
— solid2x (1 ... 35 mm²), 1x (1 ... 50 mm²)
— solid or stranded2x (1 ... 35 mm²), 1x (1 ... 50 mm²)
— finely stranded with core end processing2x (1 ... 25 mm²), 1x (1 ... 35 mm²)
for AWG cables for main contacts2x (18 ... 2), 1x (18 ... 1)
— solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— solid or stranded2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
— finely stranded with core end processing2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
for AWG cables for auxiliary contacts2x (20 ... 16), 2x (18 ... 14)
AWG number as coded connectable conductor cross section for main contacts18 ... 1
AWG number as coded connectable conductor cross section for auxiliary contacts20 ... 14
Safety related data
mirror contact according to IEC 60947-4-1Yes
positively driven operation according to IEC 60947-5-1No
Electrical Safety
protection class IP on the front according to IEC 60529IP20
touch protection on the front according to IEC 60529finger-safe, for vertical contact from the front