MT3800T - 800 Amp Trip Unit

MT3800T - 800 Amp Trip Unit

Need the right thermal magnetic trip unit to keep your existing electrical system running as intended? The MT3800T 800 Amp 3-Pole Thermal Magnetic Trip Unit is designed for use with compatible MDL and HMDL circuit breaker frames, making it a practical choice when you need to replace a matching component in an existing electrical installation. With an 800-amp continuous current rating, three-pole configuration, and 600VAC specification, this Type MT trip unit provides thermal overload and magnetic overcurrent protection for compatible breaker assemblies. One useful feature is the adjustable magnetic trip setting, ranging from 4 to 8 times the continuous ampere rating. This lets qualified electrical professionals set the magnetic trip response to meet the requirements of the existing installation and the manufacturer's specifications. Measuring 7.5 inches high, 3.75 inches wide, and 3.38 inches deep, the MT3800T has defined dimensions that help make replacement identification easier. Built to last and designed for its intended electrical protection function, it's a sensible fit for maintaining legacy power distribution equipment. Whether you're replacing a worn trip unit, servicing an industrial electrical panel, or keeping an established commercial electrical system in service, the MT3800T helps you maintain the original breaker configuration without unnecessary changes.

Key Features and Benefits

• Designed for compatible circuit breaker assemblies that require an 800A thermal-magnetic trip unit.
• Suitable for compatible three-phase electrical distribution systems that require three-pole protection.
• Combines thermal overload protection and magnetic overcurrent response in one trip unit.
• Features a magnetic trip adjustment range of 4–8 times the continuous ampere rating, giving qualified technicians flexibility when configuring the protection settings.
• Designed for compatible MDL and HMDL circuit breaker frames to maintain proper fit and function in existing installations.
• Designed for applications requiring the stated voltage specification, subject to the ratings of the complete breaker assembly.
• At 7.5 inches tall, 3.75 inches wide, and 3.38 inches deep, its dimensions help with replacement identification and fit verification.
• Designed to last in its specified application and support the continued maintenance of compatible electrical equipment.

Technical Specifications

• Part Number: MT3800T
  
• Product Type: Thermal Magnetic Trip Unit
  
• Type: MT
  
• Compatible Frames: MDL and HMDL
  
• Number of Poles: 3
  
• Amperage: 800 Amps
  
• Voltage Specification: 600VAC
  
• Magnetic Trip Adjustment: 4–8 Times Continuous Ampere Rating
  
• Nominal Magnetic Trip Range: 3,200–6,400 Amps
  
• Dimensions:
  • Height: 7.5 Inches
  • Width: 3.75 Inches
  • Depth: 3.38 Inches
• Protection Type: Thermal Magnetic Only
  
• Intended Application: Compatible Legacy Circuit Breaker Assemblies
  

Material Compliance and Certifications

• When replacing an electrical protection component, getting the specifications right matters. The MT3800T thermal magnetic trip unit is intended for compatible MDL and HMDL breaker frames, with an 800A current rating and a specified voltage of 600VAC.
• The available product information does not confirm specific material composition or certifications, including UL, CSA, and RoHS compliance. Any required certifications should be verified using the manufacturer's documentation and applicable product markings.
• The interrupting capacity of the complete circuit breaker assembly must also be verified separately, as the stated 600VAC specification does not establish an AIC rating.

Where It Works Best

• Not every electrical maintenance job calls for replacing an entire breaker assembly. Sometimes, the task is finding the right component to keep the equipment in place. That's where the MT3800T 800 Amp thermal magnetic trip unit comes in.
  
• Designed for compatible MDL and HMDL circuit breaker frames, it's especially suited for maintaining established electrical systems where the original equipment configuration must be preserved.