Siemens 3RT10666AF36 - Power Contactor 300A AC-3
Siemens 3RT10666AF36 - Power Contactor 300A AC-3

Siemens 3RT10666AF36 - Power Contactor 300A AC-3

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Siemens 3RT10666AF36 is a 3-pole power contactor engineered for heavy-duty AC-3 industrial switching applications, designed to reliably control motor loads and power circuits. This contactor operates with a coil voltage of 110-127 V AC/DC, supports a rated current of 300 A at 400 V AC-3, and delivers a power rating of 160 kW at 400 V, featuring 2 normally open and 2 normally closed auxiliary contacts for expanded control functionality. The device is constructed in frame size S10 with screw-type terminals and busbar connections, measuring 7.717 x 10.433 x 9.213 inches and weighing 14.526 lb, and is manufactured in Germany for robust industrial use. It complies with standard coordination type 1, requiring a short-circuit protection fuse rating of 500 A gL/gG, and is suitable for series installation with screw fixing. Typical applications include motor starting, power distribution, and automation systems in manufacturing, process control, and heavy machinery environments.

Key Features & Specifications
  • Type: 3-pole power contactor
  • Rated current: 300 A at AC-3 / 400 V
  • Power rating: 160 kW at 400 V AC-3
  • Poles: 3
  • Frame size: S10
  • Coil voltage: 110-127 V AC/DC
  • Auxiliary contacts: 2 NO + 2 NC
  • Mounting type: Screw fixing, series installation
  • Connection type: Busbar and screw terminals
  • Suitable for AC and DC operation
  • Short-circuit protection fuse rating: 500 A gL/gG (type 1 coordination)
  • UPC: 754554766713
  • GTIN: 00887621787653
  • Country of Origin: Germany
  • Dimensions: 7.717 x 10.433 x 9.213 inch
  • Weight: 14.526 lb


Product Identification
  • UPC: 754554766713
  • GTIN: 00887621787653