HLB3350T - 350Amp Trip Unit

HLB3350T - 350Amp Trip Unit

When you’re replacing a trip unit in existing electrical equipment, getting the details right matters. The HLB3350T is a 350-amp, 3-pole thermal-magnetic trip unit designed for use with compatible LB and HLB frames. It has a magnetic Hi-Low trip setting range of 1750–3500 and measures approximately 4.00" W x 5.13"L x 3.50"D. Those specifications make the HLB3350T useful when maintaining a compatible legacy installation where the goal is to match the original equipment’s form, fit, and function.

Key Features and Benefits

• 350 amp rating for applications requiring this specific amperage.
• 3-pole design for compatible three-pole equipment.
• Thermal magnetic operation specifically intended for LB and HLB frames.
• 1750–3500 magnetic Hi-Low trip-setting range to match the requirements of the existing installation.
• Well suited to form, fit, and functional replacement in compatible legacy electrical systems.
• Clearly defined specifications help maintenance personnel identify whether the unit matches the equipment already in service.
  

Technical Specifications

• Part Number: HLB3350T
  
• Type: HLB
  
• Configuration: Thermal magnetic trip unit
  
• Compatible Frames: LB and HLB
  
• Amperage: 350 A
  
• Number of Poles: 3
  
• Magnetic Hi-Low Trip Setting Range: 1750–3500
  
• Width: 4.00 in.
  
• Height / Length: 5.13 in.
  
• Depth: 3.50 in.
  
• Overall Dimensions: 4.00"W x 5.13"L x 3.50"D
  
• Approximate Shipping Weight: 4.00 lbs.
  
• A.I.C. Rating & Voltage: Not specified in supplied data
  
• Additional Notes: Thermal magnetic only for LB and HLB frames
  

Material Compliance and Certifications

Material compliance details and specific agency certifications were not included in the supplied specifications for the HLB3350T. UL, CSA, RoHS, or other certifications should therefore not be assumed.

If a particular certification, listing, or material requirement is necessary for the installation, verify it using the applicable equipment documentation and electrical requirements before installing the trip unit.

Where It Works Best

The HLB3350T 350 amp trip unit is a natural fit for maintenance and replacement work involving compatible LB and HLB circuit breaker frames. It is especially relevant when working with an existing or legacy electrical system where keeping the correct physical configuration and electrical characteristics is more important than changing the equipment design.