EH34090 - 90 Amp Circuit Breaker

EH34090 - 90 Amp Circuit Breaker

When you need to replace a compatible Type EH-4 circuit breaker, choosing the correct part is essential for maintaining the original design and operation of your electrical distribution system. The EH34090 is a 3-pole, 90 Amp plug-on thermal-magnetic circuit breaker designed as a form, fit, and functional replacement for compatible panelboards. It installs using a plug-on connection, making it a practical option for maintenance professionals, contractors, and facility managers working to keep existing electrical systems operating as intended.

Inside the breaker, the thermal-magnetic trip mechanism provides two levels of protection. The thermal element responds to prolonged overload conditions, while the magnetic trip reacts almost instantly to short-circuit faults.

Key Features and Benefits

• Part Number: EH34090
• 3-pole molded case circuit breaker
• 90 Amp current rating
• Type EH-4 configuration
• Plug-on mounting for compatible panelboards
• Thermal-magnetic trip mechanism provides protection against overloads and short circuits
• Designed as a form, fit, and functional replacement for compatible electrical equipment
• Helps maintain the original panelboard configuration
• Built to last for dependable service in properly maintained electrical systems
  

Technical Specifications

• Part Number: EH34090
  
• Type: EH-4
  
• Circuit Breaker Style: Plug-On Thermal-Magnetic
  
• Poles: 3
  
• Amperage: 90 Amps
  
• Interrupting Rating: 14kA @ 480VAC; 65kA @ 240VAC
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 3.50 in.
  • Depth: 2.63 in.
• Approximate Shipping Weight: 3.00 lbs.
  

Material Compliance and Certifications

• The EH34090 is a molded case thermal-magnetic circuit breaker intended for use in compatible electrical distribution equipment. Installation should always follow the National Electrical Code (NEC), applicable local electrical codes, and the equipment manufacturer's installation requirements.
• Before replacing an existing breaker, verify compatibility by matching the part number, breaker type, amperage, voltage rating, interrupting capacity, pole configuration, and mounting style. Confirming these specifications helps ensure proper fit and intended operation within the existing electrical system.
  

Where It Works Best

The EH34090 is commonly used in commercial, industrial, and institutional electrical systems that utilize compatible Type EH-4 panelboards. Its 3-pole, 90 Amp configuration makes it suitable for protecting three-phase branch circuits serving equipment such as HVAC systems, pumps, motors, compressors, lighting distribution, and manufacturing machinery, provided they operate within the breaker's published ratings.