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Schneider Electric QO QHB320

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QHB320

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The Schneider Electric QHB320 is a miniature circuit breaker designed for bolt-on installation. This unit operates at a rated voltage of 120/240 V AC and has a continuous current rating of 20 A, making it suitable for various applications within its rated limits.

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Technical specifications for QHB320

ManufacturerSchneider Electric
Product TypeMiniature Circuit Breaker (Bolt-On)
Product LineQO
Part NumberQHB320
UPC785901341666
Weight1.00 lbs (0.45 kg)
Mounting ModeBolt-on pressure-plate
Continuous Current Rating100 %
Tightening Torque≈4.6 N·m
CertificationsUL, CSA, HACR
Ambient TemperatureMax 40 °C
Line Rated Current20 A
Rated Voltage120/240 V AC
Number of Poles3
Interrupting Capacity65 kA
Breaking Capacity CodeG
Trip Unit TechnologyThermal-magnetic
Local SignalingVisiTrip trip indicator

The Schneider Electric QHB320 is classified as a bolt-on miniature circuit breaker. It features a robust mounting method utilizing a pressure-plate bolt-on design. The unit is rated to handle continuous currents up to 20 A. Its maximum operating temperature reaches 40 °C, allowing it to function effectively in various thermal conditions. This breaker possesses a compact size with dimensions of 2.91 x 2.24 x 2.99 inches, making it suitable for installations where space is a concern.

Constructed with an interrupting capacity of 65 kA, it is built to withstand high fault currents, enhancing its protective capabilities in critical applications. The thermal-magnetic technology employed in its trip unit ensures dependable operation by responding accurately to overloads and short circuits. For user convenience, the QHB320 is equipped with a VisiTrip indicator that provides a clear visual status, facilitating easy diagnostics and maintenance.

This circuit breaker complies with several important certifications, including UL, CSA, and HACR standards, underscoring its reliability and suitability for a wide range of electrical installations. Weighing just 0.84 lbs, it combines both efficiency and security in a single device, showcasing its design for reliable performance in demanding environments.