MT3350T - 350 Amp Trip Unit

MT3350T - 350 Amp Trip Unit

Upgrade your electrical safety setup with the Eaton MT3350T 350 Amp Trip Unit. Designed to pair seamlessly with MDL and HMDL molded‑case breaker frames, this accessory trip unit delivers fast, dependable overload and short‑circuit protection when matched with the right frame. With intelligent thermal‑magnetic operation and a solid three‑pole configuration, you’ll enjoy balanced protection across all legs—making it a smart pick for industrial and commercial electrical systems where uptime and safety are non‑negotiable.

Key Features and Benefits

• 350 Amp Capacity: Built to tackle significant electrical loads, the MT3350T performs at its best with Frame J‑K, Series C systems.
• Thermal-Magnetic Trip Technology: Delivers precise, fast response to both prolonged overloads and sudden surges—helping you avoid costly downtime or equipment damage.
• Three-Pole Coverage: Offers even, phase‑to‑phase protection for three‑phase setups—critical for maintaining system balance and continuity.
• Tailored Compatibility: Made specifically for use with Eaton MDL and HMDL breaker frames—ensuring perfect fit and consistent performance.
• Solid Construction: Crafted to withstand demanding environments, offering lasting peace of mind under industrial or commercial conditions.

Technical Specifications

• Product Type: Molded Case Circuit Breaker Accessory Trip Unit
  
• Ampere Rating: 350 A
  
• Trip Mechanism: Thermal‑Magnetic
  
• Poles: Three‑Pole
  
• Compatible with: Eaton MDL and HMDL breaker frames
  
• Frame Size: J‑K
  
• Series: C
  
• Physical Dimensions: 7 in (L) × 4 in (H) × 4 in (W)
  
• Weight: Approximately 3 lb
  

Material Compliance and Certifications

• UL Listed: Meets strict safety and performance criteria when installed with a proper Eaton frame.
• Eaton Warranty: Backed by Eaton’s assurance—1‑year warranty from installation or 18 months from shipment, whichever comes first—so you can count on quality coverage.

Where It Works Best

• This trip unit shines in demanding commercial and industrial settings—factories, large commercial buildings, data centers—anywhere you need a reliable, responsive safety upgrade for your breaker panel. Because it focuses strictly on the trip function, you’ll need to pair it with the correct MDL or HMDL Frame J‑K, Series C breaker to create a complete, functioning circuit breaker system.