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STR-58U-4000/5000/6300A-I-T-F-PIL

Schneider Electric
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Schneider Electric STR-58U-4000/5000/6300A-I-T-F-PIL is a high-performance trip unit designed for advanced overcurrent protection in Masterpact circuit breakers. It supports adjustable LSIG protection (Long-time, Short-time, Instantaneous, Ground-fault) with a 24VDC supply voltage and an interrupt rating up to 100 kA for 1 second. This plug-in unit weighs 3.6 lb and is engineered for seamless integration with Masterpact MP-MC frames and existing wiring harnesses. It is UL Listed and IEC Certified for reliable operation in demanding environments. Typical applications include industrial and commercial power distribution systems requiring precise circuit management and fault indication.

Key Features & Specifications
  • Manufacturer: Schneider Electric
  • Item Subcategory: Trip Units & Programmers
  • Weight: 3.6 lb
  • Part Number: STR-58U-4000/5000/6300A-I-T-F-PIL
  • Compatible Series: Masterpact
  • Amperage Range: 4000A, 5000A, 6300A
  • Supply Voltage: 24VDC
  • Mounting Type: Plug-in
  • Interrupt Rating: Up to 100 kA for 1 sec
  • Protection Type: LSIG (Long-time, Short-time, Instantaneous, Ground-fault)
  • Features: Adjustable trip settings, fault indicators, thermal memory
  • Frame Compatibility: Masterpact MP-MC
  • Standards: UL Listed, IEC Certified


Schneider Electric STR-58U-4000/5000/6300A-I-T-F-PIL - Trip Unit LSIG 4000-6300A