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Zinsco QB243040 - 40A 3-Pole Molded Case Circuit Breaker

Zinsco
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Zinsco QB243040 is a molded case circuit breaker designed to provide reliable overcurrent protection for three-phase industrial electrical systems. It features a 40A current rating and a 240V AC voltage rating, housed within a compact, durable QB Series frame with a bolt-on connection for secure installation. This thermal magnetic breaker offers combined long-time and instantaneous (LI) trip functions and is rated for an interrupting capacity of 10kA at 240V, ensuring compliance with standard protection requirements for motor control and power distribution panels.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Phase: 3
  • Poles: 3
  • Connection: Bolt-On
  • AIC Rating: 10kA @ 240V
  • Protection Functions: Long-Time and Instantaneous (LI)
  • Family/Series: QB Series
  • Weight: 3 lb


Product Identification
  • Manufacturer Part Number: QB243040