EH3B150 - 150Amp Circuit Breaker

EH3B150 - 150Amp Circuit Breaker

The EH3B150 molded case circuit breaker is a 3-pole, 150-amp circuit breaker designed as a form, fit, and functional replacement for electrical distribution equipment built to accept an EH3 breaker. Matching the original breaker's ratings and dimensions is an important part of maintaining existing commercial and industrial electrical systems, helping preserve the intended operation of compatible equipment. Whether you're performing scheduled maintenance, replacing a damaged breaker, or restoring service after an overcurrent event, the EH3B150 offers the electrical characteristics needed for installations designed around this specific breaker type.

Key Features and Benefits

• Designed as a form, fit, and functional replacement for compatible EH3 molded case circuit breakers
• 150 Amp current rating for overcurrent and short-circuit protection
• 3-pole configuration for three-phase electrical systems
• Rated for operation in ambient temperatures up to 40°C
• Durable molded case construction built to last in properly maintained electrical systems
• Helps maintain compatibility with equipment originally designed for an EH3 circuit breaker
• Ideal for maintenance, repair, and replacement projects requiring matching electrical ratings and physical fit
  

Technical Specifications

• Part Number: EH3B150
  
• Type: EH3
  
• Product Type: Molded Case Circuit Breaker
  
• Poles: 3
  
• Current Rating: 150 Amps
  
• Interrupting Capacity: 14kA @ 480VAC; 65kA @ 240VAC
  
• Ambient Temperature Rating: 40°C
  
• Dimensions:
  • Width: 4.50 inches
  • Height: 6.00 inches
  • Depth: 3.63 inches
• Approximate Shipping Weight: 5.00 lbs.
  

Material Compliance and Certifications

• Molded case circuit breaker construction
• Manufactured to the published electrical ratings for this model
• Intended for installation in compatible electrical distribution equipment
• Installation should be completed in accordance with applicable electrical codes and manufacturer recommendations
• Always confirm compatibility with the existing electrical system before installation
  

Where It Works Best

The EH3B150 is intended for use in existing commercial and industrial electrical systems originally designed for an EH3 molded-case circuit breaker. It is commonly installed in panelboards, switchboards, motor control centers, and other three-phase power distribution equipment requiring a 150-amp, 3-pole breaker with 14 kA at 480 VAC and 65 kA at 240 VAC interrupting ratings. By providing the correct form, fit, and functional characteristics, the EH3B150 helps maintain the integrity of compatible legacy electrical installations without requiring modifications to the existing equipment.