CONTACTOR 230Vac 3RT2037-1AP04 SIEMENS

Power contactor, AC-3 65 A, 30 kW / 400 V 2 NO + 2 NC, 230 V AC 50 Hz
3-pole, size S2 screw terminals

product brand name SIRIUS
product designation Power contactor
product type designation 3RT2
General technical data
size of contactor S2
product extension
● function module for communication No
● auxiliary switch No
power loss [W] for rated value of the current
● at AC in hot operating state 11.4 W
● at AC in hot operating state per pole 3.8 W
● without load current share typical 16 W
insulation voltage
● of main circuit with degree of pollution 3 rated value 690 V
● of auxiliary circuit with degree of pollution 3 rated value 690 V
surge voltage resistance
● of main circuit rated value 6 kV
● of auxiliary circuit rated value 6 kV
maximum permissible voltage for safe isolation between
coil and main contacts according to EN 60947-1 400 V
shock resistance at rectangular impulse
● at AC 9.8g / 5 ms, 6.5g / 10 ms
shock resistance with sine pulse
● at AC 15.3g / 5 ms, 10.1g / 10 ms
mechanical service life (switching cycles)
● of contactor typical 10 000 000
● of the contactor with added electronically optimized
auxiliary switch block typical 5 000 000
● of the contactor with added auxiliary switch block
typical 10 000 000
reference code according to IEC 81346-2 Q
Substance Prohibitance (Date) 10/01/2014
Ambient conditions
installation altitude at height above sea level maximum 2 000 m
ambient temperature
● during operation -25 ... +60 °C
● during storage -55 ... +80 °C
relative humidity minimum 10 %
relative humidity at 55 °C according to IEC 60068-2-30 maximum 95 %
3RT20371AP04
Page 1/7 7/5/2022 Subject to change without notice
© Copyright Siemens
Main circuit
number of poles for main current circuit 3
number of NO contacts for main contacts 3
operating voltage
● at AC-3 rated value maximum 690 V
● at AC-3e rated value maximum 690 V
operational current
● at AC-1 at 400 V at ambient temperature 40 °C
rated value 80 A
● at AC-1
— up to 690 V at ambient temperature 40 °C
rated value 80 A
— up to 690 V at ambient temperature 60 °C
rated value 70 A
● at AC-3
— at 400 V rated value 65 A
— at 500 V rated value 65 A
— at 690 V rated value 47 A
● at AC-3e
— at 400 V rated value 65 A
— at 500 V rated value 65 A
— at 690 V rated value 47 A
● at AC-4 at 400 V rated value 55 A
● at AC-5a up to 690 V rated value 70.4 A
● at AC-5b up to 400 V rated value 53.9 A
● at AC-6a
— up to 230 V for current peak value n=20 rated
value 56.9 A
— up to 400 V for current peak value n=20 rated
value 56.9 A
— up to 500 V for current peak value n=20 rated
value 56.9 A
— up to 690 V for current peak value n=20 rated
value 47 A
● at AC-6a
— up to 230 V for current peak value n=30 rated
value 38 A
— up to 400 V for current peak value n=30 rated
value 38 A
— up to 500 V for current peak value n=30 rated
value 38 A
— up to 690 V for current peak value n=30 rated
value 38 A
minimum cross-section in main circuit at maximum AC-1
rated value 25 mm²
operational current for approx. 200000 operating
cycles at AC-4
● at 400 V rated value 28 A
● at 690 V rated value 22 A
operational current
● at 1 current path at DC-1
— at 24 V rated value 55 A
— at 110 V rated value 4.5 A
— at 220 V rated value 1 A
— at 440 V rated value 0.4 A
— at 600 V rated value 0.25 A
● with 2 current paths in series at DC-1
— at 24 V rated value 55 A
— at 110 V rated value 45 A
— at 220 V rated value 5 A
— at 440 V rated value 1 A
— at 600 V rated value 0.8 A
● with 3 current paths in series at DC-1
3RT20371AP04
Page 2/7 7/5/2022 Subject to change without notice
© Copyright Siemens
— at 24 V rated value 55 A
— at 110 V rated value 55 A
— at 220 V rated value 45 A
— at 440 V rated value 2.9 A
— at 600 V rated value 1.4 A
● at 1 current path at DC-3 at DC-5
— at 24 V rated value 35 A
— at 110 V rated value 2.5 A
— at 220 V rated value 1 A
— at 440 V rated value 0.1 A
— at 600 V rated value 0.06 A
● with 2 current paths in series at DC-3 at DC-5
— at 24 V rated value 55 A
— at 110 V rated value 25 A
— at 220 V rated value 5 A
— at 440 V rated value 0.27 A
— at 600 V rated value 0.16 A
● with 3 current paths in series at DC-3 at DC-5
— at 24 V rated value 55 A
— at 110 V rated value 55 A
— at 220 V rated value 25 A
— at 440 V rated value 0.6 A
— at 600 V rated value 0.35 A
operating power
● at AC-2 at 400 V rated value 30 kW
● at AC-3
— at 230 V rated value 18.5 kW
— at 400 V rated value 30 kW
— at 500 V rated value 37 kW
— at 690 V rated value 37 kW
● at AC-3e
— at 230 V rated value 18.5 kW
— at 400 V rated value 30 kW
— at 500 V rated value 37 kW
— at 690 V rated value 37 kW
operating power for approx. 200000 operating cycles
at AC-4
● at 400 V rated value 14.7 kW
● at 690 V rated value 20 kW
operating apparent power at AC-6a
● up to 230 V for current peak value n=20 rated value 22.6 kVA
● up to 400 V for current peak value n=20 rated value 39.4 kVA
● up to 500 V for current peak value n=20 rated value 49.2 kVA
● up to 690 V for current peak value n=20 rated value 56.1 kVA
operating apparent power at AC-6a
● up to 230 V for current peak value n=30 rated value 15.1 kVA
● up to 400 V for current peak value n=30 rated value 26.2 kVA
● up to 500 V for current peak value n=30 rated value 32.8 kVA
● up to 690 V for current peak value n=30 rated value 45.3 kVA
short-time withstand current in cold operating state up to 40 °C
● limited to 1 s switching at zero current maximum 1 055 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum 730 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum 520 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum 336 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum 272 A; Use minimum cross-section acc. to AC-1 rated value
no-load switching frequency
● at AC 5 000 1/h
operating frequency
● at AC-1 maximum 800 1/h
● at AC-2 maximum 400 1/h
3RT20371AP04
Page 3/7 7/5/2022 Subject to change without notice
© Copyright Siemens
● at AC-3 maximum 700 1/h
● at AC-3e maximum 700 1/h
● at AC-4 maximum 200 1/h
Control circuit/ Control
type of voltage of the control supply voltage AC
control supply voltage at AC
● at 50 Hz rated value 230 V
operating range factor control supply voltage rated
value of magnet coil at AC
● at 50 Hz 0.8 ... 1.1
apparent pick-up power of magnet coil at AC
● at 50 Hz 190 VA
inductive power factor with closing power of the coil
● at 50 Hz 0.72
apparent holding power of magnet coil at AC
● at 50 Hz 16 VA
inductive power factor with the holding power of the coil
● at 50 Hz 0.37
closing delay
● at AC 10 ... 80 ms
opening delay
● at AC 10 ... 18 ms
arcing time 10 ... 20 ms
control version of the switch operating mechanism Standard A1 - A2
Auxiliary circuit
number of NC contacts for auxiliary contacts
instantaneous contact
2
number of NO contacts for auxiliary contacts
instantaneous contact
2
operational current at AC-12 maximum 10 A
operational current at AC-15
● at 230 V rated value 6 A
● at 400 V rated value 3 A
● at 500 V rated value 2 A
● at 690 V rated value 1 A
operational current at DC-12
● at 24 V rated value 10 A
● at 48 V rated value 6 A
● at 60 V rated value 6 A
● at 110 V rated value 3 A
● at 125 V rated value 2 A
● at 220 V rated value 1 A
● at 600 V rated value 0.15 A
operational current at DC-13
● at 24 V rated value 6 A
● at 48 V rated value 2 A
● at 60 V rated value 2 A
● at 110 V rated value 1 A
● at 125 V rated value 0.9 A
● at 220 V rated value 0.3 A
● at 600 V rated value 0.1 A
contact reliability of auxiliary contacts 1 faulty switching per 100 million (17 V, 1 mA)
UL/CSA ratings
full-load current (FLA) for 3-phase AC motor
● at 480 V rated value 65 A
● at 600 V rated value 52 A
yielded mechanical performance [hp]
● for single-phase AC motor
— at 110/120 V rated value 5 hp
— at 230 V rated value 10 hp
3RT20371AP04
Page 4/7 7/5/2022 Subject to change without notice
© Copyright Siemens
● for 3-phase AC motor
— at 200/208 V rated value 20 hp
— at 220/230 V rated value 20 hp
— at 460/480 V rated value 50 hp
— at 575/600 V rated value 50 hp
contact rating of auxiliary contacts according to UL A600 / Q600
Short-circuit protection
design of the fuse link
● for short-circuit protection of the main circuit
— with type of coordination 1 required gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A
(415 V, 80 kA)
— with type of assignment 2 required gG: 125A (690V,100kA), aM: 63A (690V,100kA), BS88: 100A
(415V,80kA)
● for short-circuit protection of the auxiliary switch
required
gG: 10 A (500 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 screw and snap-on mounting onto 35 mm standard mounting rail
according to DIN EN 60715
● side-by-side mounting Yes
height 114 mm
width 55 mm
depth 174 mm
required spacing
● with side-by-side mounting
— forwards 10 mm
— upwards 10 mm
— downwards 10 mm
— at the side 0 mm
● for grounded parts
— forwards 10 mm
— upwards 10 mm
— at the side 6 mm
— downwards 10 mm
● for live parts
— forwards 10 mm
— upwards 10 mm
— downwards 10 mm
— at the side 6 mm
Connections/ Terminals
type of electrical connection
● for main current circuit screw-type terminals
● for auxiliary and control circuit screw-type terminals
● at contactor for auxiliary contacts Screw-type terminals
● of magnet coil Screw-type terminals
type of connectable conductor cross-sections
● for main contacts
— solid or stranded 2x (1 ... 35 mm²), 1x (1 ... 50 mm²)
— finely stranded with core end processing 2x (1 ... 25 mm²), 1x (1 ... 35 mm²)
● at AWG cables for main contacts 2x (18 ... 2), 1x (18 ... 1)
connectable conductor cross-section for main contacts
● finely stranded with core end processing 1 ... 35 mm²
connectable conductor cross-section for auxiliary contacts
● solid or stranded 0.5 ... 2.5 mm²
● finely stranded with core end processing 0.5 ... 2.5 mm²
type of connectable conductor cross-sections
● for auxiliary contacts
— solid or stranded 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
3RT20371AP04
Page 5/7 7/5/2022 Subject to change without notice
© Copyright Siemens
— finely stranded with core end processing 2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
● at AWG cables for auxiliary contacts 2x (20 ... 16), 2x (18 ... 14)
AWG number as coded connectable conductor cross section
● for main contacts 18 ... 1
● for auxiliary contacts 20 ... 14
Safety related data product function
● mirror contact according to IEC 60947-4-1 Yes
● positively driven operation according to IEC 60947-5-1 No
B10 value with high demand rate according to SN 31920 1 000 000
proportion of dangerous failures
● with low demand rate according to SN 31920 40 %
● with high demand rate according to SN 31920 73 %
failure rate [FIT] with low demand rate according to SN 31920 100 FIT
T1 value for proof test interval or service life according to
IEC 61508 - 20 y
protection class IP on the front according to IEC
60529 - IP20
touch protection on the front according to IEC 60529  
suitability for use - finger-safe, for vertical contact from the front
● safety-related switching OFF Yes