Contactor, Size 14, 3-pole, AC-3, 450 kW, 400/380 V (690 V) Auxiliary switch 44 (4NO+4NC) AC operation 200...240 V AC 50/60 Hz |
product designation | Vacuum contactor |
product type designation | 3TF6 |
General technical data |
size of contactor | 14 |
product extension | |
● function module for communication | No |
● auxiliary switch | No |
insulation voltage | |
● of main circuit with degree of pollution 3 rated value | 1 000 V |
● of auxiliary circuit with degree of pollution 3 rated value | 690 V |
surge voltage resistance | |
● of main circuit rated value | 8 kV |
● of auxiliary circuit rated value | 6 kV |
maximum permissible voltage for safe isolation in networks with grounded star point | |
● between auxiliary and auxiliary circuit | 300 V |
● between main and auxiliary circuit | 500 V |
shock resistance at rectangular impulse | |
● at AC | 9.5g / 5 ms, 5.7g / 10 ms |
shock resistance with sine pulse | |
● at AC | 13.5g / 5 ms, 7.8g / 10 ms |
mechanical service life (switching cycles) | |
● of contactor typical | 5 000 000 |
reference code according to IEC 81346-2 | Q |
Substance Prohibitance (Date) | 03/01/2017 |
Ambient conditions |
installation altitude at height above sea level maximum | 2 000 m |
ambient temperature | |
● during operation | -25 ... +55 °C |
● during storage | -55 ... +80 °C |
relative humidity minimum | 10 % |
relative humidity during operation | 10 ... 95 % |
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 |
number of NC contacts for main contacts | 0 |
type of voltage for main current circuit | AC |
operating voltage | |
● at AC-3 rated value maximum | 690 V |
operational current | |
● at AC-1 | |
— up to 690 V at ambient temperature 40 °C rated value | 910 A |
— up to 690 V at ambient temperature 55 °C rated value | 850 A |
— up to 1000 V at ambient temperature 55 °C rated value | 800 A |
● at AC-3 | |
— at 400 V rated value | 820 A |
— at 500 V rated value | 820 A |
— at 690 V rated value | 820 A |
— at 1000 V rated value | 580 A |
● at AC-4 at 400 V rated value | 690 A |
● at AC-6a | |
— up to 500 V for current peak value n=20 rated value | 675 A |
— up to 690 V for current peak value n=20 rated value | 675 A |
— up to 1000 V for current peak value n=20 rated value | 580 A |
● at AC-6a | |
— up to 400 V for current peak value n=30 rated value | 450 A |
— up to 500 V for current peak value n=30 rated value | 450 A |
— up to 690 V for current peak value n=30 rated value | 450 A |
— up to 1000 V for current peak value n=30 rated value | 450 A |
connectable conductor cross-section in main circuit at AC-1 | |
● at 40 °C minimum permissible | 600 mm² |
operational current for approx. 200000 operating cycles at AC-4 | |
● at 400 V rated value | 360 A |
● at 690 V rated value | 360 A |
operating power | |
● at AC-3 | |
— at 230 V rated value | 260 kW |
— at 400 V rated value | 450 kW |
— at 690 V rated value | 800 kW |
— at 1000 V rated value | 800 kW |
operating apparent power at AC-6a | |
● up to 400 V for current peak value n=20 rated value | 445 kVA |
● up to 690 V for current peak value n=20 rated value | 771 kVA |
● up to 1000 V for current peak value n=20 rated value | 1 003 kVA |
operating apparent power at AC-6a | |
● up to 400 V for current peak value n=30 rated value | 297 kVA |
● up to 690 V for current peak value n=30 rated value | 514 kVA |
● up to 1000 V for current peak value n=30 rated value | 778 kVA |
thermal short-time current limited to 10 s | 7 000 A |
power loss [W] at AC-3 at 400 V for rated value of the operational current per conductor | 70 W |
no-load switching frequency at AC | 1 000 1/h |
operating frequency | |
● at AC-1 maximum | 700 1/h |
● at AC-2 at AC-3 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 | 200 ... 240 V |
● at 60 Hz rated value | 200 ... 240 V |
operating range factor control supply voltage rated value of magnet coil at AC | |
● at 50 Hz | 0.8 ... 1.1 |
● at 60 Hz | 0.8 ... 1.1 |
apparent pick-up power of magnet coil at AC | |
● at 50 Hz | 600 VA |
● at 60 Hz | 600 VA |
inductive power factor with closing power of the coil | |
● at 50 Hz | 1 |
● at 60 Hz | 1 |
apparent holding power of magnet coil at AC | |
● at 50 Hz | 12.9 VA |
● at 60 Hz | 12.9 VA |
inductive power factor with the holding power of the coil | |
● at 50 Hz | 0.31 |
● at 60 Hz | 0.31 |
closing delay | |
● at AC | 80 ... 120 ms |
opening delay | |
● at AC | 70 ... 80 ms |
arcing time | 10 ... 15 ms |
control version of the switch operating mechanism | Standard A1 - A2 |
Auxiliary circuit |
number of NC contacts for auxiliary contacts | |
● attachable | 4 |
● instantaneous contact | 4 |
number of NO contacts for auxiliary contacts | |
● attachable | 4 |
● instantaneous contact | 4 |
operational current at AC-12 maximum | 10 A |
operational current at AC-15 | |
● at 230 V rated value | 5.6 A |
● at 400 V rated value | 3.6 A |
● at 500 V rated value | 2.5 A |
● at 690 V rated value | 2.3 A |
operational current at DC-12 at 440 V rated value | 0.33 A |
operational current at DC-12 | |
● at 24 V rated value | 10 A |
● at 48 V rated value | 10 A |
● at 110 V rated value | 3.2 A |
● at 125 V rated value | 2.5 A |
● at 220 V rated value | 0.9 A |
● at 600 V rated value | 0.22 A |
operational current at DC-13 | |
● at 24 V rated value | 10 A |
● at 48 V rated value | 5 A |
● at 110 V rated value | 1.14 A |
● at 125 V rated value | 0.98 A |
● at 220 V rated value | 0.48 A |
● at 600 V rated value | 0.07 A |
contact reliability of auxiliary contacts | one incorrect switching operation of 100 million switching operations (17 V, 5 mA) |
UL/CSA ratings |
full-load current (FLA) for 3-phase AC motor | |
● at 480 V rated value | 820 A |
● at 600 V rated value | 820 A |
yielded mechanical performance [hp] | |
● for 3-phase AC motor | |
— at 200/208 V rated value | 290 hp |
— at 220/230 V rated value | 350 hp |
— at 460/480 V rated value | 700 hp |
— at 575/600 V rated value | 860 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: 1250 A (690 V, 100 kA) |
— with type of assignment 2 required | gG: 630 A (690 V, 50 kA), aM: 630 A (690 V, 50 kA), BS88: 630 A (690 V, 50 kA) |
● for short-circuit protection of the auxiliary switch required | fuse gG: 10 A |
Installation/ mounting/ dimensions |
mounting position | with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back |
fastening method | screw fixing |
● side-by-side mounting | Yes |
height | 295 mm |
width | 230 mm |
depth | 237 mm |
required spacing | |
● with side-by-side mounting | |
— forwards | 20 mm |
— upwards | 10 mm |
— downwards | 10 mm |
— at the side | 10 mm |
● for grounded parts | |
— forwards | 20 mm |
— upwards | 10 mm |
— at the side | 10 mm |
— downwards | 10 mm |
● for live parts | |
— forwards | 20 mm |
— upwards | 10 mm |
— downwards | 10 mm |
— at the side | 10 mm |
Connections/ Terminals |
type of electrical connection | |
● for main current circuit | Connection bar |
● for auxiliary and control circuit | screw-type terminals |
● at contactor for auxiliary contacts | Screw-type terminals |
width of connection bar | 40 mm |
thickness of connection bar | 6 mm |
diameter of holes | 13.5 mm |
number of holes | 1 |
type of connectable conductor cross-sections | |
● for main contacts | |
— stranded | 50 ... 240 mm² |
— finely stranded with core end processing | 50 ... 240 mm² |
● at AWG cables for main contacts | 2/0 ... 500 kcmil |
connectable conductor cross-section for main contacts | |
● finely stranded with core end processing | 240 ... 50 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 | 2x (0.5 ... 1.0 mm²), 2x (1.0 ... 2.5 mm²) |
— finely stranded with core end processing | 2x (0.5 ... 1.0 mm²), 2x (0.75 ... 2.5 mm²) |
● at AWG cables for auxiliary contacts | 2x (18 ... 12) |
AWG number as coded connectable conductor cross section | |
● for main contacts | 500 |
● for auxiliary contacts | 18 ... 12 |
Safety related data |
product function | |
● mirror contact according to IEC 60947-4-1 | Yes; One NC contact each must be connected in series for the right and left auxiliary switch block respectively |
● positively driven operation according to IEC 60947-5-1 | No |
protection class IP on the front according to IEC 60529 | IP00; IP20 with cover |
touch protection on the front according to IEC 60529 | finger-safe, for vertical contact from the front with cover |
Certificates/ approvals |
Downloads and manuals |
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last modified: | 7/2/2021 |
Date 5/3/2022 | Subject to change without notice © Copyright Siemens 2022 |