Siemens 3RB2056-1FC2 Overload Relay

The Siemens 3RB2056-1FC2 Overload Relay is a solid-state overload relay designed for protecting electrical circuits, particularly motors, from overload conditions. With a high-rated insulation voltage of 1000V and a rated impulse withstand voltage of 8KV, this relay is built for reliable operation in harsh electrical environments. It features 1NO/1NC contacts and can handle a thermal current of up to 200A, making it ideal for use in industrial applications. The relay is suitable for use with both AC and DC circuits, and its short circuit capacity is 10KA at 600V.

• Manufacturer: Siemens
• Type: Overload Relay
• Model: 3RB2056-1FC2

Technical Specifications:

• Product Designation: Solid-state overload relay
• Rated Insulation Voltage (Ui): 1000V, 50/60Hz
• Rated Impulse-Withstand Voltage (Uimp): 8KV
• Current AC15: 4A at 24V, 3A at 250V
• Current DC13: 2A at 24V, 0.11A at 250V
• Contacts: 1NO/1NC
• Thermal Current: 200A
• Short Circuit Capacity: 10KA, 600V
• Auxiliary Contact: B600/R300
• Operating Power:
  • For 3-phase motors at 400V at 50Hz: 30 … 90 kW
  • For AC motors at 500V at 50Hz: 30 … 132 kW
  • For AC motors at 690V at 50Hz: 55 … 160 kW
• Type of Electrical Connection:
  • For main current circuit: Busbar connection
  • For auxiliary and control circuits: Screw-type terminals
• Tightening Torque:
  • For main contacts: 10 … 12 N·m
  • For auxiliary contacts: 0.8 … 1.2 N·m
• Thread Type:
  • For main contacts: M8
  • For auxiliary and control contacts: M3
• Number of Poles: 3
• Display Version for Switching Status: Slide switch
• Protection Class IP: IP00; IP20
• Ambient Temperature: -25 / 60 °C
• Dimensions (H x W x D): 119 x 120 x 155 mm

The Siemens 3RB2056-1FC2 Overload Relay is an essential component for motor protection, ensuring reliable and effective overload protection in industrial circuits. Its high current handling and robust design make it suitable for a wide range of motor-driven applications in industrial environments.