HMA3250T - 250Amp Trip Unit

HMA3250T - 250Amp Trip Unit

When you’re maintaining older electrical equipment, getting the replacement specifications right matters. The HMA3250T is a 250-amp, 3-pole thermal-magnetic trip unit designed for use with compatible MA and HMA frames. It has a magnetic Hi-Low trip setting range of 1250–2500 and measures approximately 4.00" W x 7.50"L x 3.50" D. For maintenance teams, electricians, and facilities working with existing MA or HMA equipment, this unit provides a straightforward option when the application calls for the same type, amperage, pole configuration, and physical fit.

Key Features and Benefits

• 250 Amp rating for compatible applications
• 3-pole configuration
• Thermal magnetic design for MA and HMA frames
• 1250–2500 magnetic Hi-Low trip setting range
• Useful for maintaining compatible legacy electrical equipment
• Defined dimensions make it easier to check physical fit before installation
• Designed for applications where maintaining the existing equipment configuration is the goal
  

Technical Specifications

• Part Number: HMA3250T
  
• Type: HMA
  
• Trip Type: Thermal Magnetic
  
• Amperage: 250 Amps
  
• Poles: 3
  
• Magnetic Hi-Low Trip Setting Range: 1250–2500
  
• Frame Application: MA and HMA
  
• A.I.C. Rating & Volts: Not specified in the provided information
  
• Height: 7.50 in.
  
• Width: 4.00 in.
  
• Depth: 3.50 in.
  
• Overall 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, certification, and listing information was not provided for the HMA3250T. UL, CSA, RoHS, or other certifications should therefore not be assumed.

If a particular listing or certification is required for your installation, check the unit's markings and the applicable equipment documentation before installation.

Where It Works Best

The HMA3250T makes the most sense in existing electrical systems that use compatible MA or HMA circuit breaker frames where a 250-Amp, 3-pole thermal-magnetic trip unit is required. It is especially relevant to maintenance and replacement work involving legacy equipment, where preserving the original system configuration is important.