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Siemens 3RB20662MC2 - Overload Relay 160-630A (3-Pole, Class 20E)

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Siemens 3RB20662MC2 is a thermal overload relay designed for comprehensive motor protection in industrial applications. This three-pole device features an adjustable current range from 160 to 630 amperes and operates with an operating voltage up to 1000 V AC-3, providing surge voltage resistance of 8 kV. The relay is constructed for mounting on S10/S12 size contactors or standalone installation, with busbar main circuit connections and screw auxiliary circuit connections, weighing 4.118 lb. It carries PTB 06 ATEX 3001 Ex II (2) GD certification for use in potentially explosive atmospheres and offers IP20 front protection. Typical applications include motor protection in heavy machinery, conveyor systems, and process control equipment requiring Class 20E trip characteristics.

Key Features & Specifications
  • Type: Thermal overload relay
  • Amperage range: 160 to 630 A adjustable
  • Poles: 3
  • Mounting type: Contactor mounting or standalone
  • Frame size: S10/S12
  • Class: 20E
  • Main circuit connection: Busbar
  • Auxiliary circuit connection: Screw connection
  • Operating voltage: Up to 1000 V AC-3
  • Surge voltage resistance: 8 kV
  • Protection class: IP20 front
  • Trip unit: Thermal overload relay
  • Certifications: PTB 06 ATEX 3001 Ex II (2) GD
  • Weight: 4.118 lb