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Siemens 3VA9978-0BB27 Undervoltage Release 440-480V AC

Siemens 3VA9978-0BB27 Undervoltage Release accessory.

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ManufacturerSiemens

Part number3VA9978-0BB27

Voltage 440-480 V AC

Frequency 50/60 Hz

Accessory for 3VA4, 3VA5, 3VA6 Series

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Undervoltage protection 440-480V AC operation For 3VA4/5/6 series High voltage AC compatibility

Product description

The Siemens 3VA9978-0BB27 is an undervoltage release accessory specifically designed for Siemens 3VA4, 3VA5, and 3VA6 series circuit breakers. This accessory functions with a wide voltage range of 440-480V AC at 50/60 Hz, providing critical safety by automatically tripping the circuit breaker when the power supply voltage falls to an unsafe level.

This undervoltage release is essential for industrial and commercial applications where stable power is a requirement and equipment protection against voltage fluctuations is paramount. It is commonly used in control systems, power distribution units, and machinery protection circuits within various industrial settings.

Stanlo Automation, a proud veteran-owned business, offers this Siemens undervoltage release from our stock of high-quality surplus industrial automation parts. We are committed to providing reliable components and exceptional service to keep your operations running smoothly.

Technical specifications

Voltage	440-480 V AC
Frequency	50/60 Hz
Accessory for	3VA4, 3VA5, 3VA6 Series

Common applications

Industrial power distribution

Large machinery protection

High voltage control panels

Manufacturing plants

Electrical safety

Compatible systems

Siemens 3VA4 Series Siemens 3VA5 Series Siemens 3VA6 Series

Also known as

Siemens 3VA Overvoltage Release 3VA Circuit Breaker Accessory Siemens Protection Module

Replaces / compatible with

Compatible with Siemens 3VA4, 3VA5, and 3VA6 series circuit breakers operating on 440-480V AC.

Technical note

Expert tip

Verify the incoming voltage is within the 440-480V AC range before installing to ensure proper function of the undervoltage release.

What happens next?

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Frequently asked questions

What voltage range does the Siemens 3VA9978-0BB27 undervoltage release support?

The Siemens 3VA9978-0BB27 undervoltage release is designed to operate within a voltage range of 440-480V AC at 50/60 Hz. It provides essential protection for Siemens 3VA4, 3VA5, and 3VA6 circuit breakers against undervoltage conditions within this specified range.