3RU2 thermal overload relays

• Sizes S00 and S0:
  • Main and auxiliary circuit: Either screw or spring-loaded terminals
• Sizes S2 and S3:
  • Main circuit: Screw terminals with box terminal
  • Auxiliary circuit: Either screw or spring-loaded terminals

3RB3 electronic overload relays

• Sizes S00 and S0:
  • Main and auxiliary circuit: Either screw or spring-loaded terminals
• Sizes S2 and S3:
  • Main circuit: Screw terminals with box terminal or as straight-through transformer
  • Auxiliary circuit: Either screw or spring-loaded terminals

3RB2 electronic overload relays

• Size S6:
  • Main circuit: With busbar connection or as straight-through transformer
  • Auxiliary circuit: Either screw or spring-loaded terminals
• Sizes S10/S12:
  • Main circuit: With busbar connection
  • Auxiliary circuit: Either screw or spring-loaded terminals