HMA3225T - 225Amp Trip Unit

HMA3225T - 225Amp Trip Unit

When you’re replacing a trip unit in existing electrical equipment, the details matter. The HMA3225T is a 225-amp, 3-pole thermal-magnetic trip unit designed for use with compatible MA and HMA circuit breaker frames. It has a magnetic Hi-Low trip setting range of 1125–2250 amps and measures 4.00 inches wide by 7.50 inches long by 3.50 inches deep. For maintenance teams, electricians, and facilities working with legacy equipment, those specifications make it easier to compare the HMA3225T directly with the component already in service.

Key Features and Benefits

• 225 Amp, 3-pole configuration for applications requiring these specific electrical characteristics
• Thermal magnetic operation for compatible MA and HMA circuit breaker frames
• 1125–2250 Amp magnetic Hi-Low trip setting range
• Compact 4.00"W x 7.50"L x 3.50"D footprint
• Useful for maintaining existing and legacy electrical equipment where the HMA3225T specifications are required
• Clearly defined ratings make it easier to compare against an existing trip unit before installation
• Designed around form, fit, and function rather than changing the existing breaker configuration
  

Technical Specifications

• Part Number: HMA3225T
  
• Type: HMA
  
• Product Type: Thermal Magnetic Trip Unit
  
• Compatible Frames: MA and HMA
  
• Amperage: 225 Amps
  
• Poles: 3
  
• Magnetic Hi-Low Trip Setting Range: 1125–2250 Amps
  
• Width: 4.00 in.
  
• Height / Length: 7.50 in.
  
• Depth: 3.50 in.
  
• Overall Dimensions: 4.00"W x 7.50"L x 3.50"D
  
• Approx. Ship Weight: 6.00 lbs.
  
• A.I.C. Rating & Volts: Not specified in provided product data
  

Material Compliance and Certifications

No specific material compliance information, agency certifications, or listing details were included in the available specifications for the HMA3225T. Because of that, certifications such as UL, CSA, RoHS, or similar standards should not be assumed.

If your installation has specific regulatory or certification requirements, check the markings on the component and confirm them against the documentation for the equipment in which it will be installed.

Where It Works Best

The HMA3225T makes the most sense in maintenance and replacement situations involving compatible MA or HMA circuit breaker frames. It is especially relevant when an existing system requires a 225-amp, 3-pole thermal-magnetic trip unit with a magnetic Hi-Low setting range of 1125–2250 amps.

For legacy equipment, a precise match is more important than chasing features the original system was never designed around. Compare the HMA3225T part number and specifications with the existing component, paying close attention to the frame type, amperage, number of poles, trip characteristics, setting range, and dimensions. That simple verification helps determine whether the unit provides the required form, fit, and function for the application.