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Picture of 3RT2025-1BB44 power contactor

3RT2025-1BB44 power contactor

3RT2025-1BB44 power contactor, AC-3 17 A, 7.5 kW / 400 V 2 NO + 2 NC, 24 V DC, 3-pole
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SKU: MID00300
950.00 (SAR)
819.00 (SAR)
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Technical data

power contactor, AC-3 17 A, 7.5 kW / 400 V 2 NO + 2 NC, 24 V DC, 3-pole, Size S0 screw terminal Removable auxiliary switch
product brand name SIRIUS
product designation Power contactor
product type designation 3RT2
General technical data
size of contactor S0
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 2.7 W
● at AC in hot operating state per pole 0.9 W
● without load current share typical 5.9 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 DC 10g / 5 ms, 7,5g / 10 ms
shock resistance with sine pulse  
● at DC 15g / 5 ms, 10g / 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) 10/01/2009
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 %
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 40 A
● at AC-1  
— up to 690 V at ambient temperature 40 °C rated value 40 A
— up to 690 V at ambient temperature 60 °C rated value 35 A
● at AC-3  
— at 400 V rated value 17 A
— at 500 V rated value 17 A
— at 690 V rated value 13 A
● at AC-3e  
— at 400 V rated value 17 A
— at 500 V rated value 17 A
— at 690 V rated value 13 A
● at AC-4 at 400 V rated value 15.5 A
● at AC-5a up to 690 V rated value 35.2 A
● at AC-5b up to 400 V rated value 14.1 A
● at AC-6a  
— up to 230 V for current peak value n=20 rated value 11.4 A
— up to 400 V for current peak value n=20 rated value 11.4 A
— up to 500 V for current peak value n=20 rated value 11.4 A
— up to 690 V for current peak value n=20 rated value 11.3 A
● at AC-6a  
— up to 230 V for current peak value n=30 rated value 7.6 A
— up to 400 V for current peak value n=30 rated value 7.6 A
— up to 500 V for current peak value n=30 rated value 7.6 A
— up to 690 V for current peak value n=30 rated value 7.6 A
minimum cross-section in main circuit at maximum AC-1 rated value 10 mm²
operational current for approx. 200000 operating cycles at AC-4  
● at 400 V rated value 7.7 A
● at 690 V rated value 7.7 A
operational current  
● at 1 current path at DC-1  
— at 24 V rated value 35 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 35 A
— at 110 V rated value 35 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  
— at 24 V rated value 35 A
— at 110 V rated value 35 A
— at 220 V rated value 35 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 20 A
— at 110 V rated value 2.5 A
— at 220 V rated value 1 A
— at 440 V rated value 0.09 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 35 A
— at 110 V rated value 15 A
— at 220 V rated value 3 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 35 A
— at 110 V rated value 35 A
— at 220 V rated value 10 A
— at 440 V rated value 0.6 A
— at 600 V rated value 0.6 A
operating power  
● at AC-3  
— at 230 V rated value 4 kW
— at 400 V rated value 7.5 kW
— at 500 V rated value 7.5 kW
— at 690 V rated value 11 kW
● at AC-3e  
— at 230 V rated value 4 kW
— at 400 V rated value 4.5 kW
— at 500 V rated value 7.5 kW
— at 690 V rated value 11 kW
operating power for approx. 200000 operating cycles at AC-4  
● at 400 V rated value 3.5 kW
● at 690 V rated value 6 kW
operating apparent power at AC-6a  
● up to 230 V for current peak value n=20 rated value 4.5 kVA
● up to 400 V for current peak value n=20 rated value 7.8 kVA
● up to 500 V for current peak value n=20 rated value 9.9 kVA
● up to 690 V for current peak value n=20 rated value 13.6 kVA
operating apparent power at AC-6a  
● up to 230 V for current peak value n=30 rated value 3 kVA
● up to 400 V for current peak value n=30 rated value 5.2 kVA
● up to 500 V for current peak value n=30 rated value 6.6 kVA
● up to 690 V for current peak value n=30 rated value 9.1 kVA
short-time withstand current in cold operating state up to 40 °C  
● limited to 1 s switching at zero current maximum 225 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 5 s switching at zero current maximum 225 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 10 s switching at zero current maximum 180 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 30 s switching at zero current maximum 115 A; Use minimum cross-section acc. to AC-1 rated value
● limited to 60 s switching at zero current maximum 96 A; Use minimum cross-section acc. to AC-1 rated value
no-load switching frequency  
● at DC 1 500 1/h
operating frequency  
● at AC-1 maximum 1 000 1/h
● at AC-2 maximum 1 000 1/h
● at AC-3 maximum 1 000 1/h
● at AC-3e maximum 1 000 1/h
● at AC-4 maximum 300 1/h
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