| | CONTACTOR SIZE 14, 3-POLE, AC-3, 450KW, 400/380V (1000V) AUX. SWITCH 44 (4NO+4NC) AC OPERATION 110...132V AC 50/60HZ W/O SURGE SUPPRESSOR IN MAIN CIRCUIT |
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| General details: |
| Size of the contactor | | 14 |
| Protection class IP / on the front | | IP00 |
| Ambient temperature / during operating | °C | 55… -25 |
| Item designation / according to DIN 40719 extendable after IEC 204-2 / according to IEC 750 | | K |
| Item designation / according to DIN EN 61346-2 | | Q |
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| Main circuit: |
| Number of poles / for main current circuit | | 3 |
| Operating current / at AC-1 / at 400 V | | |
- at 40 °C ambient temperature / rated value
| A | 910 |
| Number of NC contacts / for main contacts | | 0 |
| Number of NO contacts / for main contacts | | 3 |
| Operating current / at AC-3 / at 400 V / rated value | A | 820 |
| Service power | | |
- at AC-3 / at 400 V / rated value
| kW | 450 |
- at AC-1 / at 400 V / rated value
| kW | 558 |
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| Control circuit: |
| Design of activation | | conventional |
| Type of voltage / of the controlled supply voltage | | AC |
| Control supply voltage frequency | | |
| | Hz | 50 |
| | Hz | 60 |
| Control supply voltage / 1 / at 50 Hz / for AC | | |
| | V | 110 |
| | V | 132 |
| Control supply voltage / 1 / at 60 Hz / for AC | | |
| | V | 110 |
| | V | 132 |
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| Auxiliary circuit: |
| Number of NC contacts / for auxiliary contacts | | |
| | | 0 |
| | | 4 |
| Number of NO contacts / for auxiliary contacts | | |
| | | 0 |
| | | 4 |
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| Connection type: |
| Design of the electrical connection | | |
| | | screw-type terminals |
- for auxiliary and control current circuit
| | screw-type terminals |
| Identification number and letter for switching elements | | 44 |
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| Mechanical design: |
| Type of mounting | | screw fixing |
| Type of fixing/fixation / series installation | | Yes |
| Width | mm | 230 |
| Height | mm | 295 |
| Depth | mm | 237 |
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| Certificates/approvals: | | |
| General Product Approval | Functional Safety / Safety of Machinery | Test Certificates |  ROSTEST | SUVA | Manufacturer | | Shipping Approval | | | | Manufacturer | | | | | | |
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| Further information: |
| Information- and Downloadcenter (Catalogs, Brochures,…) http://www.siemens.com/industrial-controls/catalogs |
| Industry Mall (Online ordering system) http://www.siemens.com/industrial-controls/mall |
| CAx-Online-Generator http://www.siemens.com/cax |
| Service&Support (Manuals, Certificates, Characteristics, FAQs,...) http://support.automation.siemens.com/WW/view/en/3TF6944-8CF7-ZA02/all |
| Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...) http://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=3TF6944-8CF7-ZA02 |
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| last change: | Oct 31, 2011 |
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