Siemens 3TF6 Power Contactors - Size S14

Ultra high-capacity Size S14 power contactors from the Siemens 3TF6 series. Engineered for extreme industrial demands, large-scale melting furnaces, and heavy drive systems handling up to 450 kW motor loads and 910A thermal currents. Specialized variants are available for frequency converter operating environments. Standard models feature 4 NO + 4 NC built-in auxiliary contact structures.

Key Features:

• Extreme Power Class: Handles switching capacities up to 450 kW motor power and 910A thermal currents within the S14 frame.

• Expanded Auxiliary Logic: Factory-equipped with up to 4 NO + 4 NC auxiliary contacts for complex automation interlocks.

• Frequency Converter Optimized: Dedicated 3TF6833 model specifically designed for frequency converter driven systems.

  Sipariş Kodu	Açıklama / Uygulama Tipi	Motor Gücü (kW) [400V AC-3]	Anma Akımı (A) [AC-3]	Termik Akım (A) [AC-1]	Dahili Yardımcı Kontak (NO)	Dahili Yardımcı Kontak (NC)
  3TF6844-0CM7	Standart Ağır Sanayi Tip	335 kW	630 A	700 A	4	4
  3TF6944-0CM7	Standart Ağır Sanayi Tip	450 kW	820 A	910 A	4	4
  3TF6833-1QL7	Frekans Konvertörlü Uygulamalar İçin	335 kW	630 A	700 A	3	3

Tags: siemens 3tf6844, siemens 3tf6944, siemens 3tf6833, size s14 contactor, 3tf6 contactor, heavy industrial contactor