EC3090 - 90Amp Circuit Breaker

EC3090 - 90 Amp Circuit Breaker

The EC3090 circuit breaker is a 3-pole, 90-amp thermal-magnetic circuit breaker designed for use in electrical distribution systems that require dependable overcurrent protection in compatible EC-frame equipment. Built for consistent operation in legacy panelboards and switchgear assemblies, this breaker combines thermal and magnetic trip functions to respond to both overload conditions and short-circuit events. Its 10k A.I.C. rating at 240VAC supports protection in many commercial and industrial branch or feeder circuits where equipment must maintain proper form and fit with existing electrical infrastructure. The breaker includes load terminals and features a non-interchangeable trip unit, helping ensure the factory-set protection characteristics remain consistent throughout service. Rated for operation at 40°C, the EC3090 is suited for environments where dependable electrical protection is needed and where maintaining compatibility with existing systems is essential.

Key Features and Benefits

• Thermal-magnetic protection that responds to both sustained overloads and instantaneous short-circuit conditions
• 3-pole configuration designed for three-phase electrical systems
• 90-amp current rating suitable for a variety of feeder and distribution circuit applications
• 10k A.I.C. interrupting capacity at 240VAC to support safe fault interruption within rated systems
• Non-interchangeable trip unit that maintains fixed protection settings
• Includes load terminals for secure electrical connections during installation
• 40°C ambient temperature rating for operation in typical electrical equipment environments
• Built with durable components intended for long service life in properly maintained systems
• Designed to maintain form, fit, and functional compatibility with equipment requiring EC-frame breakers

Technical Specifications

• Part Number: EC3090
  
• Amperage Rating: 90 Amps
  
• Poles: 3
  
• Frame Type: EC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Operating Temperature Rating: 40°C
  
• Included Accessories: Load terminals included
  
• Shipping Weight: 4.13 lbs
  
• Shipping Dimensions (Height): 6.0 inches
  

Material Compliance and Certifications

• The EC3090 circuit breaker is manufactured for installation in electrical distribution systems that follow applicable North American electrical standards and installation practices, including guidelines typically associated with the National Electrical Code (NEC) and related safety frameworks. Proper installation by qualified personnel helps ensure the breaker performs as intended within its rated electrical parameters.

Where It Works Best

• The EC3090 90A 3-pole circuit breaker is commonly used in applications where existing electrical systems require a compatible EC-frame breaker with the correct amperage and interrupting rating. Typical environments include:
• Commercial building electrical distribution panels
• Industrial power distribution equipment
• Legacy panelboards designed for EC-frame circuit breakers
• Three-phase branch or feeder circuits operating at up to 240VAC
• Maintenance and replacement projects where maintaining original equipment compatibility is important

This breaker is intended for installations where matching the correct frame type, pole configuration, and electrical rating is necessary to maintain safe and consistent system operation.