HMA3400T - 400Amp Trip Unit

HMA3400T - 400Amp Trip Unit

The HMA3400T is a 400-amp, 3-pole thermal-magnetic trip unit designed for compatible MA and HMA circuit breaker frames. When you're working with existing electrical equipment, replacing the trip unit with the correct match is important to maintain the breaker assembly's intended configuration. This unit is designed for thermal magnetic operation only for MA and HMA frames and features a magnetic Hi-Low trip setting range of 2000–4000. The compact dimensions of 4.00" W x 7.50"L x 3.50"D make it easier to compare the unit against the existing trip component before installation.

Key Features and Benefits

• 400 Amp rating for compatible MA and HMA frame applications
• 3-pole configuration for matching breaker assemblies
• Thermal magnetic trip design for MA and HMA frames
• 2000–4000 magnetic Hi-Low trip setting range
• Designed for maintaining existing electrical equipment configurations
• Compact size makes comparison with an existing trip unit easier
• Helps support form, fit, and functional replacement requirements
  

Technical Specifications

• Part Number: HMA3400T
  
• Type: HMA
  
• Product Type: Thermal Magnetic Trip Unit
  
• Compatible Frames: MA and HMA
  
• Amperage: 400 Amps
  
• Poles: 3
  
• Trip Type: Thermal Magnetic Only
  
• Magnetic Hi-Low Trip Setting Range: 2000–4000
  
• A.I.C. Rating & Volts: Not specified
  
• Width: 4.0 in.
  
• Height / Length: 7.5 in.
  
• Depth: 3.5 in.
  
• Dimensions: 4.00"W x 7.50"L x 3.50"D
  
• Approx. Shipping Weight: 6.00 lbs.
  

Material Compliance and Certifications

Specific material compliance information, certification details, and agency listings were not provided for the HMA3400T. UL, CSA, RoHS, or other certifications should not be assumed without confirmation.

If the installation requires a specific listing or compliance standard, verify the markings on the actual component and check the applicable equipment documentation before use.

Where It Works Best

The HMA3400T thermal magnetic trip unit is best suited for existing electrical systems with compatible MA or HMA circuit breaker frames that require a 400-amp, 3-pole trip unit with a 2000–4000 magnetic Hi-Low trip setting range.