Q1-290 - 90 Amp Circuit Breaker

Q1-290 - 90 Amp Circuit Breaker

If you're trying to match an existing Q1-290 circuit breaker, the small details matter. This is a Type Q1, 90-amp, 2-pole plug-on thermal-magnetic circuit breaker rated 10 kA.I.C. at 120/240 VAC. It measures 6.38 inches high, 1.5 inches wide, and 2.31 inches deep and requires 4 spaces. That combination of ratings, size, and mounting style makes the Q1-290 a practical choice for maintaining compatible legacy electrical equipment where this particular breaker configuration is required. It's built to last when used in the application for which it was designed. Before replacing an existing breaker, though, take a minute to compare the important details. Check the Type Q1 designation, 90A rating, two-pole configuration, voltage and A.I.C. ratings, plug-on design, dimensions, and four-space requirement. A breaker may look similar at first glance, but physical appearance alone isn't enough to establish compatibility.

Key Features and Benefits

• 90-amp, 2-pole configuration for equipment designed around these electrical requirements.
• Type Q1 plug-on design for compatible electrical equipment and legacy applications.
• Thermal-magnetic operation provides circuit protection within the breaker's specified ratings.
• Rated 10 kA.I.C. at 120/240VAC.
• The four-space requirement is another useful point to check when matching an existing installation.
• Well-suited to maintenance and functional replacement applications where the original form, fit, and ratings must be preserved.
• Built to last when properly selected, installed, and used for its intended application.

Technical Specifications

• Part Number Q1-290
  
• Type Q1
  
• Breaker Type Plug-On Thermal Magnetic Circuit Breaker
  
• Amperage 90A
  
• Poles 2
  
• A.I.C. Rating & Voltage 10k @ 120/240VAC
  
• Height 6.38 in.
  
• Width 1.5 in.
  
• Depth 2.31 in.
  
• Spaces Required 4
  

Material Compliance and Certifications

• Specific certification and material compliance information was not included with the available Q1-290 specifications. For applications where a specific listing, approval, or material requirement must be met, check the markings on the individual breaker and confirm them against the equipment and installation requirements. This avoids making assumptions about certifications that may not apply to every unit.

Where It Works Best

• The Q1-290 is intended for existing electrical equipment that calls for a Type Q1 plug-on breaker with the same physical and electrical characteristics. It is especially relevant when servicing older or legacy systems, and the objective is straightforward: find a functional replacement that meets the equipment's requirements.
• When checking fit, don't stop at "90 amps." Compare the existing breaker with the Q1-290's two poles, 120/240 VAC rating, 10 kA I.C. rating, Type Q1 configuration, plug-on connection, four-space requirement, and physical dimensions. These details help determine whether the breaker is appropriate for a particular installation.
• As with any circuit breaker replacement, compatibility should be verified with the specific equipment before installation. Follow applicable electrical codes and equipment requirements, and have the work performed by a qualified electrical professional where required.