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Siemens BQD340BP 3-Pole Miniature Circuit Breaker

Siemens BQD340BP 3-Pole Miniature Circuit Breaker.

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ManufacturerSiemens

Part numberBQD340BP

Number of Poles 3

Rated Current 40 A

Rated Voltage 480V AC

Frame Size BQD

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3-pole design 40A current rating 480V AC voltage rating Miniature Circuit Breaker technology Enhanced protection features (BP designation)

Product description

The Siemens BQD340BP is a 3-pole Miniature Circuit Breaker (MCB) designed for robust overcurrent protection. It features a significant current rating of 40A and a standard voltage rating of 480V AC. The 'BP' in its designation often points to enhanced performance characteristics or specific industry standards compliance.

This high-capacity breaker is essential for industrial and heavy commercial applications, including main power distribution, large motor circuits, and critical branch protection. Its design ensures reliable operation and safety in demanding electrical infrastructures.

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Technical specifications

Number of Poles	3
Rated Current	40 A
Rated Voltage	480V AC
Frame Size	BQD
Series	BQD

Common applications

Industrial power distribution

Heavy commercial applications

Motor protection circuits

Main electrical panels

Control systems

Compatible systems

Industrial main panels Heavy duty distribution boards Systems requiring 40A, 480V AC protection

Also known as

Siemens BQD340BP MCB BQD340BP breaker Siemens 40A 3-pole BP breaker

Replaces / compatible with

The BQD340BP is designed to replace or be a direct upgrade for Siemens BQD series breakers with similar specifications. Always verify datasheet for exact compatibility.

Technical note

Expert tip

For circuits with high fault current levels, ensure the BQD340BP's interrupting rating (kAIC) is sufficient for the application's potential short-circuit current.

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Frequently asked questions

Is the Siemens BQD340BP suitable for high-inrush current loads?

While the BQD340BP provides excellent protection, high-inrush applications should be carefully analyzed. The 'BP' designation might suggest enhanced performance, but consult the product's trip curve and specifications to ensure it accommodates the specific motor starting or inrush characteristics.