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Allen-Bradley Q, M Frame CB

Manuals and User Guides for Allen-Bradley Q, M Frame CB. We found 1 manuals for free downloads Installation instructions

Allen-Bradley Q, M Frame CB are circuit breakers designed for thermal-magnetic trip functions. They offer adjustable settings for overload and short circuit protection, ensuring safety and reliability. These breakers are suitable for a wide range of applications, including industrial, commercial, and residential settings. The trip unit includes either a fixed or an adjustable thermal element for inverse time delay on overload and an adjustable magnetic element for protection against short circuits.

Key Features

Thermal-magnetic trip units
Adjustable overload and short circuit protection
UL489 certified
Fixed or adjustable thermal element
Magnetic trip adjustment
Q and M-Frame compatible
Internal accessory compatibility

Pages: 8 Allen-Bradley Q, M Frame CB Installation instructions

Brand: Allen-Bradley Category: Circuit breakers Size: 781 KB

Languages: English

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Frequently Answers and Questions

What are the different trip functions available with Allen-Bradley Q and M-Frame circuit breakers?

Allen-Bradley Q and M-Frame circuit breakers come in two trip functions: thermal-magnetic trip functions (described in this instruction leaflet) and electronic trip functions (covered in Instruction Leaflet 40752-072).

What is the purpose of the thermal element in the trip unit?

The thermal element provides inverse time delay protection against overloads. It trips the circuit breaker within 2 hours for an overload of 135 percent and trips in less time for higher overloads.

How can I adjust the magnetic trip setting on the circuit breaker?

You can adjust the magnetic trip setting on each pole of the trip unit by rotating the adjustment buttons on the front face of the trip unit with a screwdriver. The buttons have several settings as indicated on the nameplate with values in multiples of the trip unit ampere rating (In).