HMA3500T - 500Amp Trip Unit

HMA3500T - 500Amp Trip Unit

The HMA3500T is a 500-amp, 3-pole thermal-magnetic trip unit for compatible MA and HMA circuit breaker frames. When you're servicing existing electrical equipment, having the correct trip unit is essential to maintaining the original breaker setup. This unit is designed for thermal magnetic operation only for MA and HMA frames and features a magnetic Hi-Low trip setting range of 2500–5000.

The HMA3500T has a compact design with dimensions of 4.00" W x 7.50"L x 3.50"D, making it easier to compare with an existing trip unit before replacement. For electricians, maintenance teams, and facilities that work with legacy electrical systems, this component provides the key specifications needed to determine whether it matches existing equipment.

Key Features and Benefits

• 500 Amp rating for compatible MA and HMA breaker frames
• 3-pole configuration for matching breaker assemblies
• Thermal magnetic trip design for MA and HMA frames
• 2500–5000 magnetic Hi-Low trip setting range
• Designed for maintaining existing electrical equipment configurations
• Compact dimensions help with physical comparison during replacement work
• Useful for maintenance applications where the original breaker arrangement needs to remain in place
  

Technical Specifications

• Part Number: HMA3500T
  
• Type: HMA
  
• Product Type: Thermal Magnetic Trip Unit
  
• Compatible Frames: MA and HMA Frames
  
• Amperage: 500 Amps
  
• Poles: 3
  
• Trip Type: Thermal Magnetic Only
  
• Magnetic Hi-Low Trip Setting Range: 2500–5000
  
• A.I.C. Rating & Volts: Not specified in the provided information
  
• 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 details, certifications, and agency listings were not provided for the HMA3500T. UL, CSA, RoHS, or other certifications should not be assumed without verification.

If a project requires a specific certification or listing, confirm the markings on the actual component and review the applicable equipment documentation before installation.

Where It Works Best

The HMA3500T thermal magnetic trip unit is best suited for existing electrical equipment that uses compatible MA or HMA circuit breaker frames and requires a 500 Amp, 3-pole trip unit with a 2500–5000 magnetic Hi-Low trip setting range.

This type of replacement work is usually about finding the right match for equipment already in place. Carefully compare the existing trip unit for the frame style, amperage, pole configuration, dimensions, and trip settings before installation. A proper match helps maintain the original breaker configuration and keeps the system operating as intended.