MES3800LS - 800 Amp Trip Unit

Eaton MES3800LS - 800 Amp Electronic Trip Unit

Boost your electrical system’s safety and performance with the Eaton MES3800LS electronic trip unit. Built for tough industrial and commercial environments, this 800 Amp LS (Long‑Time and Short‑Time) trip unit brings precision protection to your power distribution setup. Keep in mind—this is the trip unit only; it requires a compatible frame to complete the breaker system.

Key Features and Benefits

• High‑Precision LS Trip Protection: Combines long‑time and short‑time sensing to protect against both overloads and short circuits with refined accuracy, helping minimize system wear and downtime.
• High‑Capacity Performance: Handles up to 800 Amps—perfect for heavy‑duty commercial or industrial power demands.
• Three‑Pole Balance: Delivers even distribution across phases, maintaining stability in multi‑phase setups.
• Ground‑Fault Safety: Detects and interrupts leakage currents, adding a safety layer especially vital in conductive or moisture‑prone environments.
• Tough Build Quality: Designed to endure challenging jobsite conditions and long service life.
  

Technical Specifications

• Amperage Rating: 800 Amps
  
• Trip Type: LS (Long‑Time and Short‑Time protection)
  
• Frame Compatibility: J‑K series frames (unit only)
  
• Protection Feature: Ground‑fault detection
  
• Series: Eaton MES3800LS (Series C)
  
• Pole Configuration: Three‑pole
  
• Dimensions:
  • Length/Depth: Approx. 9″
  • Height: 6″
  • Width: 5.5″
• Weight: Approximately 4.5 lb
  

Material Compliance and Certifications

• UL Listed: Meets stringent UL safety and performance standards, giving you confidence in reliability and compliance.
  

Suitability

• The Eaton MES3800LS finds its sweet spot in industrial plants, large commercial buildings, and infrastructure projects where strong, dependable protection is crucial. When combined with the correct J‑K frame, it keeps your circuits safeguarded from overloads, short circuits, and ground faults—making it a smart choice for facilities with demanding electrical workloads and safety regulations.