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Siemens 48ASU3M20 - Solid-State Overload Relay 400A 600V

Siemens
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Siemens 48ASU3M20 is a solid-state overload relay designed for comprehensive motor protection in three-phase industrial systems. It integrates LSHG protection functions—Long-Time, Short-Time, High-Range Instantaneous, and Ground Fault—with a current rating of 400A and a voltage rating of 600VAC. The device weighs 5.19 lb, features a bolt-on connection for three poles, and is constructed with a self-powered, heaterless design for energy efficiency. It is UL Listed and CSA Certified, with an interrupting rating of 100kA at 480V. This relay is suitable for demanding environments requiring precise overload and ground fault protection for motors.

Key Features & Specifications
  • Type: ESP100 Solid-State Overload Relay
  • Manufacturer: Siemens
  • Functions: LSHG - Long-Time, Short-Time, High-Range Instantaneous and Ground Fault
  • Current Rating: 400A
  • Full Load Amps: 100-270A
  • Voltage Rating: 600VAC 50/60 Hz
  • Poles: 3
  • Phase: 3
  • Connection: Bolt-On
  • Protection: Solid State
  • AIC Rating: 100kA@480V
  • Interrupt Rating: 100 kA
  • Weight: 5.19 lb
  • Frame/Size: Size 4
  • Mounting: DIN Rail or Panel Mount
  • Trip Unit: Adjustable FLA Dial, Class 20 Standard
  • Contact Rating: A600 (AC), P300 (DC)
  • Certifications: UL Listed, CSA Certified


Part Number: 48ASU3M20