3RT1045-1AF00-1AA0
CONTACTOR, AC-3 37 KW/400 V,

From SIEMENS

Power contactor, AC-3 80 A, 37 kW / 400 V 110 V AC, 50 Hz 3-pole, Size S3 Screw terminal Upright mounting position !!! Phased-out product !!! Successor is SIRIUS 3RT2
Product brand nameSIRIUS
Product designationpower contactor
General technical data
Size of contactorS3
Insulation voltage
rated value1 000 V
Degree of pollution3
Surge voltage resistance rated value6 kV
maximum permissible voltage for safe isolation
between coil and main contacts acc. to EN 60947-1690 V
Protection class IP
on the frontIP20; IP20 on the front with cover / box terminal
of the terminalIP00
Shock resistance at rectangular impulse
at AC6,8g / 5 ms, 4g / 10 ms
Shock resistance with sine pulse
at AC10,6g / 5 ms, 6,2g / 10 ms
Mechanical service life (switching cycles)
of contactor typical10 000 000
of the contactor with added electronics-compatible auxiliary switch block typical5 000 000
of the contactor with added auxiliary switch block typical10 000 000
Reference code acc. to DIN EN 81346-2Q
Ambient conditions
Installation altitude at height above sea level
maximum2 000 m
Main circuit
Number of poles for main current circuit3
Number of NO contacts for main contacts3
Number of NC contacts for main contacts0
Operating current
at AC-1 at 400 V
— at ambient temperature 40 °C rated value120 A
at AC-1
— up to 690 V at ambient temperature 40 °C rated value120 A
— up to 690 V at ambient temperature 60 °C rated value100 A
— up to 1000 V at ambient temperature 40 °C rated value60 A
— up to 1000 V at ambient temperature 60 °C rated value50 A
at AC-3
— at 400 V rated value80 A
— at 690 V rated value58 A
— at 1000 V rated value30 A
at AC-4 at 400 V rated value66 A
Connectable conductor cross-section in main circuit at AC-1
at 60 °C minimum permissible35 mm²
at 40 °C minimum permissible50 mm²
Operating current for approx. 200000 operating cycles at AC-4
at 400 V rated value34 A
at 690 V rated value22 A
Operating current
at 1 current path at DC-1
— at 24 V rated value100 A
— at 110 V rated value9 A
with 2 current paths in series at DC-1
— at 24 V rated value100 A
— at 110 V rated value100 A
with 3 current paths in series at DC-1
— at 24 V rated value100 A
— at 110 V rated value100 A
Operating current
at 1 current path at DC-3 at DC-5
— at 24 V rated value40 A
— at 110 V rated value2.5 A
with 2 current paths in series at DC-3 at DC-5
— at 24 V rated value100 A
— at 110 V rated value100 A
with 3 current paths in series at DC-3 at DC-5
— at 24 V rated value100 A
— at 110 V rated value100 A
Operating power
at AC-1
— at 230 V at 60 °C rated value38 kW
— at 400 V rated value66 kW
— at 690 V rated value114 kW
— at 690 V at 60 °C rated value114 kW
— at 1000 V at 60 °C rated value82 W
at AC-2 at 400 V rated value37 kW
at AC-3
— at 230 V rated value22 kW
— at 400 V rated value37 kW
— at 500 V rated value45 kW
— at 690 V rated value55 kW
— at 1000 V rated value37 W
Operating power for approx. 200000 operating cycles at AC-4
at 400 V rated value17.9 kW
at 690 V rated value21.1 kW
Thermal short-time current limited to 10 s760 A
Power loss [W] at AC-3 at 400 V for rated value of the operating current per conductor7.7 W
No-load switching frequency
at AC5 000 1/h
Operating frequency
at AC-1 maximum900 1/h
at AC-2 maximum400 1/h
at AC-3 maximum1 000 1/h
at AC-4 maximum300 1/h
Control circuit/ Control
Type of voltage of the control supply voltageAC
Control supply voltage at AC
at 50 Hz rated value110 V
Control supply voltage frequency
1 rated value50 Hz
Operating range factor control supply voltage rated value of magnet coil at AC
at 50 Hz0.8 ... 1.1
Apparent pick-up power of magnet coil at AC270 V·A
Inductive power factor with closing power of the coil0.68
Apparent holding power of magnet coil at AC22 V·A
Inductive power factor with the holding power of the coil0.27
Closing delay
at AC17 ... 90 ms
Opening delay
at AC10 ... 25 ms
Arcing time10 ... 15 ms
Auxiliary circuit
Number of NC contacts for auxiliary contacts
instantaneous contact0
Number of NO contacts for auxiliary contacts
instantaneous contact0
Operating current at AC-12 maximum10 A
Operating current at AC-15
at 230 V rated value6 A
at 400 V rated value3 A
Operating current at DC-12
at 60 V rated value6 A
at 110 V rated value3 A
at 220 V rated value1 A
Operating current at DC-13
at 24 V rated value10 A
at 60 V rated value2 A
at 110 V rated value1 A
at 220 V rated value0.3 A
Contact reliability of auxiliary contacts1 faulty switching per 100 million (17 V, 1 mA)
UL/CSA ratings
Contact rating of auxiliary contacts according to ULA600 / Q600
Short-circuit protection
Design of the fuse link
for short-circuit protection of the main circuit
— with type of coordination 1 requiredfuse gL/gG: 250 A
— with type of assignment 2 requiredfuse gL/gG: 160 A
for short-circuit protection of the auxiliary switch requiredfuse gL/gG: 10 A
Installation/ mounting/ dimensions
Mounting typescrew and snap-on mounting onto 35 mm and 75 mm standard mounting rail
Side-by-side mountingYes
Height146 mm
Width70 mm
Depth139 mm
Required spacing
for grounded parts
— at the side6 mm
Connections/Terminals
Type of electrical connection
for main current circuitscrew-type terminals
for auxiliary and control current circuitscrew-type terminals
Type of connectable conductor cross-sections
for main contacts
— solid2x (2.5 ... 16 mm²)
— stranded2x (10 ... 50 mm²)
— single or multi-stranded2x (2,5 ... 16 mm²)
— finely stranded with core end processing2x (2.5 ... 35 mm²)
— finely stranded without core end processing2x (10 ... 35 mm²)
at AWG conductors for main contacts2x (10 ... 1/0)
Type of connectable conductor cross-sections
for auxiliary contacts
— solid2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²), max. 2x (0.75 ... 4 mm²)
— finely stranded with core end processing2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)
at AWG conductors for auxiliary contacts2x (20 ... 16), 2x (18 ... 14), 1x 12

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