JT3100T - 100Amp Trip Unit

JT3100T - 100Amp Trip Unit

The Eaton JT3100T is a 100A, three-pole thermal-magnetic trip unit for compatible Series C molded case circuit breaker assemblies. When you're replacing an existing trip unit, the catalog number is only the starting point. It is also UL Listed. The JT3100T is built to last, and its clearly documented ratings make it easier to determine whether it has the right form, fit, and function for compatible existing or legacy equipment.

Key Features and Benefits

• 100A rating for assemblies that call for this specific amperage.
• The three-pole design provides a clear configuration point for verification against the existing unit.
• Uses thermal-magnetic trip technology.
• T185 trip type helps narrow down the correct replacement.
• Identified for JT circuit breaker type and Frame J-K.
• Part of the Series C product family.
• UL Listed according to Eaton's published specifications.
  

Technical Specifications

• Catalog Number: JT3100T
  
• Manufacturer: Eaton
  
• Product Type: Molded Case Circuit Breaker Accessory
  
• Accessory Type: Trip Unit
  
• Series: Series C
  
• Amperage Rating: 100A
  
• Poles: 3
  
• Trip Type: T185
  
• Trip Technology: Thermal-Magnetic
  
• Circuit Breaker Type: JT
  
• Frame Size: J-K
  
• Width: 4.3 in.
  
• Height: 5.4 in.
  
• Length / Depth: 7.0 in.
  
• Product Weight: 1.4 lb
  
• UPC: 786679404119
  

Material Compliance and Certifications

The JT3100T is UL Listed. For additional compliance information, contact the manufacturer. No other material-compliance certifications were included in the supplied product data, so they should not be assumed.

Where It Works Best

The JT3100T is intended for compatible Eaton Series C molded-case circuit breaker assemblies that require a 100A, three-pole thermal-magnetic trip unit with the T185 trip type, JT breaker type, and J-K frame size. That makes it particularly relevant when maintaining existing or legacy equipment, where the original electrical and physical configuration must be preserved.

Before installation, compare the JT3100T catalog number, 100A rating, three-pole configuration, T185 trip type, JT breaker type, J-K frame designation, and dimensions with the existing assembly. Checking those details together is a much better way to establish form, fit, and functional compatibility than relying on amperage alone.