ND3800T33W - 800 Amp Circuit Breaker

ND3800T33W - 800 Amp Circuit Breaker

When you’re replacing a circuit breaker in existing electrical equipment, getting the right form, fit, and electrical specifications matters. The ND3800T33W is an 800-amp, 3-pole, N-Frame molded case circuit breaker designed for applications requiring a Type ND breaker with thermal-magnetic protection and a non-interchangeable trip unit. It has interrupting ratings of 25kA at 600VAC, 50kA at 480VAC, and 65kA at 240VAC, giving you clear specifications to compare against your existing system requirements.

The ND3800T33W also features adjustable short-time pickup with an I²t short-delay ramp, allowing its protection characteristics to match applications that call for this specific configuration. Measuring 16 inches high, 8.25 inches wide, and 5.5 inches deep, this N-Frame breaker is especially relevant for maintaining legacy electrical equipment where physical dimensions, mounting configuration, amperage, voltage, and interrupting capacity must all align.

It is HACR-rated and built to last as part of a properly specified, installed, and maintained electrical system. One important detail when planning your replacement: the rating plug and lug terminals are not included in the catalog number, so evaluate those components separately for compatibility.

Key Features and Benefits

• 800A current rating for applications requiring an 800-amp breaker
• 3-pole configuration for compatible three-phase electrical systems
• N-Frame, Type ND design for matching existing equipment requirements
• Thermal-magnetic protection with an electronic circuit breaker configuration
• Non-interchangeable trip unit for the specified breaker arrangement
• Adjustable short-time pickup for applications requiring this protection characteristic
• I²t short-delay ramp as part of the short-time protection function
• Multiple AIC ratings based on operating voltage
• HACR rated for applicable heating, air-conditioning, and refrigeration equipment
• Designed with the form, fit, and function considerations needed when servicing compatible legacy electrical systems
  

Technical Specifications

• Catalog Number: ND3800T33W
  
• Type: ND
  
• Frame: N-Frame
  
• Amperage: 800A
  
• Poles: 3
  
• AIC at 600VAC: 25kA
  
• AIC at 480VAC: 50kA
  
• AIC at 240VAC: 65kA
  
• Protection Type: Thermal-Magnetic
  
• Breaker Type: Molded Case / Electronic Circuit Breaker
  
• Trip Unit: Non-Interchangeable
  
• Short-Time Pickup: Adjustable
  
• Short-Delay Characteristic: I²t Short-Delay Ramp
  
• HACR Rated: Yes
  
• Height: 16.0 in
  
• Width: 8.25 in
  
• Depth: 5.5 in
  
• Rating Plug Included in Catalog Number: No
  
• Lug Terminals Included in Catalog Number: No
  

Material Compliance and Certifications

• The supplied product information identifies the ND3800T33W as HACR rated. No additional UL, CSA, RoHS, material-compliance, or environmental certification information was provided, so do not assume those certifications without supporting product documentation.
  

Where It Works Best

• The ND3800T33W 800A circuit breaker is best suited to compatible electrical equipment that specifically calls for a Type ND, N-Frame, 3-pole breaker with matching electrical and physical characteristics. It can be particularly useful when maintaining existing or legacy distribution equipment, where replacing the breaker with the correct configuration matters more than simply finding another 800A breaker.
• Before using the ND3800T33W as a replacement, confirm the system voltage, available fault current, interrupting rating, trip characteristics, physical dimensions, mounting requirements, rating plug, and terminal configuration against the existing equipment's requirements.