Q1B240 - 40 Amp Circuit Breaker

Q1B240 - 40 Amp Circuit Breaker

The Q1B240 is a dependable two-pole, 40-amp circuit breaker built to deliver consistent protection and long service life in demanding electrical systems. Combining thermal and magnetic trip mechanisms, it reacts quickly to overloads and short circuits—keeping your wiring and connected equipment safe. Whether used in residential, commercial, or industrial settings, this breaker offers a reliable solution when you need a sturdy replacement or upgrade component.

Key Features and Benefits

• Dual protection design: Thermal response handles sustained overloads; magnetic trip protects against instantaneous short circuits.
• Long service life: Engineered for repeated cycling and minimal wear, so you can trust it to perform over years of use.
• Compact, space-saving build: Though robust, the Q1B240 fits neatly into panels without occupying excessive space.
• Easy maintenance replacement: Designed with backward compatibility in mind—ideal for replacing older breakers in existing switchgear systems.
• Clear fault indication: The trip mechanism gives a visible, unmistakable signal when the breaker is open, easing troubleshooting.
  

Technical Specifications

• Poles: 2
  
• Current rating: 40 A
  
• Interrupting rating (A.I.C.): 10,000 A @ 120/240 VAC
  
• Frame: Q1B
  
• Dimensions:
  • Width: 1.50"
  • Length: 6.38"
  • Depth: 2.31"
• Weight: 3.50 lb
  
• Required panel spaces: 4
  

Material Compliance and Certifications

• Industry Standards: This breaker meets all relevant industry safety and performance standards. Its construction uses premium materials engineered for corrosion resistance, temperature stability, and electrical isolation.
• Certification: Certified for maintenance applications, it provides peace of mind that performance and safety have been validated under rigorous testing protocols.
  

Where It Works Best

• The Q1B240 shines in retrofitting, system maintenance, and panel upgrades. Use it when you’re replacing an existing two-pole 40A breaker or need a proven, dependable option in control panels, distribution boards, generator switchgear, or backup system circuits. It’s handy where space is tight but performance can’t be compromised.