Q390 - 90Amp Circuit Breaker

Q390 - 90Amp Circuit Breaker

The Q390 circuit breaker is a 90-amp, 3-pole, Type QP plug-in circuit breaker designed for your compatible electrical distribution applications requiring dependable three-pole circuit protection. Rated at 10kA A.I.C. at 240VAC, the Q390 combines a practical plug-in configuration with a compact 3.13-inch high × 3.0-inch wide × 2.56-inch deep footprint. Its three-pole design makes it suitable for compatible circuits where three poles must be protected together, while the 90-amp rating supports higher-current applications within the breaker's specified electrical limits. The Q390 is also HACR-rated, making it appropriate for compatible heating, air-conditioning, and refrigeration equipment applications when system requirements call for an HACR-rated breaker. With a 40°C rating and a straightforward plug-in design, this breaker is a practical choice for your electrical professionals, maintenance teams, facility managers, and property owners seeking a replacement breaker that meets the required Q390 specifications. For safe operation, always confirm the breaker type, amperage, voltage, interrupting rating, number of poles, and panel compatibility before installation.

Key Features and Benefits

• Provides 90-amp circuit protection for compatible electrical applications.
• Three-pole construction supports applications that require simultaneous protection across all three poles.
• Designed for use in electrical equipment specifically compatible with Type QP plug-in circuit breakers.
• Provides a 10,000-amp interrupting capacity at 240 VAC at its stated rating.
• The plug-in configuration supports straightforward installation in compatible equipment without requiring a bolt-on mounting arrangement.
• Suitable for compatible heating, air-conditioning, and refrigeration applications where an HACR-rated circuit breaker is specified.
• Rated based on the stated 40°C operating-temperature specification.
• At only 3.13 inches high, 3.0 inches wide, and 2.56 inches deep, the breaker fits its electrical protection capabilities into a relatively compact package.

Technical Specifications

• Part Number: Q390
  
• Breaker Type: QP
  
• Mounting Style: Plug-In
  
• Number of Poles: 3
  
• Amperage: 90 Amps
  
• A.I.C. Rating: 10kA @ 240VAC
  
• Voltage Rating: 240VAC (per stated A.I.C. specification)
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Dimensions:
  • Height: 3.13 in.
  • Width: 3.0 in.
  • Depth: 2.56 in.

Material Compliance and Certifications

• The available product specifications identify the Q390 as HACR-rated and provide a 40°C rating. No additional material-compliance declarations or certifications have been provided for this listing. To keep product information accurate and avoid unsupported compliance claims, requirements involving specific certifications, standards, environmental directives, or material restrictions should be verified against the breaker labeling and applicable manufacturer documentation before the product is specified for a regulated installation.

Where It Works Best

• The Q390 90-amp 3-pole circuit breaker works best in compatible electrical panels and distribution equipment designed to accept Type QP plug-in breakers, and where the electrical system calls for the breaker's specific ratings. Its three-pole configuration makes it a useful option for compatible multi-pole applications, while the HACR rating can make it suitable for qualifying heating, air-conditioning, and refrigeration equipment. It can also serve as a replacement breaker when an existing installation specifically requires a Q390, 90A, 3-pole, Type QP plug-in breaker with a 10kA rating at 240VAC. Because circuit breakers are safety-critical components, compatibility should never be determined solely by physical dimensions. Confirm the panel requirements, electrical ratings, breaker type, and applicable installation requirements before use, and have installation performed by qualified personnel where required.