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Siemens CQD320 20A 480V 3-Pole Molded Case Circuit Breaker

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ManufacturerSiemens

Part numberCQD320

Amperage 20A

Voltage 480V

Poles 3

Mounting DIN Rail

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CAGE: 9NK75

20 Amp rating 480V operational voltage 3-pole design Thermal Magnetic trip unit LI protection DIN rail mountable

Product description

The Siemens CQD320 is a 20 Amp, 480V, 3-pole molded case circuit breaker from the CQD Series. It features a thermal magnetic trip unit with LI (Long-Time and Instantaneous) functions, providing standard interrupting capacity of 14kA at 480V. This breaker is designed for feed-thru installation and is suitable for use in DIN rail enclosures and OEM control panels.

This circuit breaker is an excellent choice for protecting electrical circuits in commercial and industrial applications, including control panels for machinery, building automation, and other electrical distribution systems where a 20A, 3-pole breaker is required.

Source your Siemens CQD320 from Stanlo Automation, a veteran-owned surplus parts distributor. We offer reliable industrial automation components and expert support, ensuring you get the right part for your application.

Technical specifications

Amperage	20A
Voltage	480V
Poles	3
Mounting	DIN Rail
Interrupt Rating	14kA@480V
Series	CQD
Trip Function	LI

Common applications

Control panels

Machinery

Building automation

Electrical distribution

Industrial applications

Commercial applications

Compatible systems

DIN rail enclosures OEM control panels S7-300 control systems

Also known as

Siemens CQD320 MCCB Siemens ITE CQD320

Replaces / compatible with

Designed as a standard replacement for 3-pole, 20A circuit breaker applications in DIN rail enclosures and OEM panels.

Technical note

Expert tip

The CQD320 is suitable for reverse feed applications, allowing for flexible installation in control panels.

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Frequently asked questions

What is the interrupting capacity of the Siemens CQD320 circuit breaker?

The Siemens CQD320 circuit breaker has a standard interrupting capacity of 14kA at 480V. It is rated for 65kA at 120VAC and 240VAC.