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Siemens 3TX4490-3H Varistor Surge Suppressor 48-127V AC/70-150V DC

Siemens 3TX4490-3H Varistor Surge Suppressor for 48-127V AC / 70-150V DC.

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ManufacturerSiemens

Part number3TX4490-3H

Type Surge Suppressor (Varistor)

Voltage 48-127V AC / 70-150V DC

Mounting Plug-in

Compatibility Siemens contactors (with/without aux switch blocks)

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12-month warranty

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Veteran-owned

CAGE: 9NK75

Varistor-based surge protection Wide AC/DC voltage range Easy plug-in installation Protects contactors and control circuits Enhances equipment reliability

Product description

The Siemens 3TX4490-3H is a plug-in surge suppressor featuring a varistor for protection against voltage spikes. It is designed for AC systems operating at 48-127V and DC systems at 70-150V. This suppressor can be easily plugged onto Siemens contactors, both with and without auxiliary switch blocks, offering a convenient way to enhance equipment protection.

This surge suppressor plays a vital role in protecting sensitive control components and contactors from transient overvoltages, which can be caused by switching operations or external factors like lightning strikes. It is commonly used in industrial environments, control panels, and power distribution systems to prolong the lifespan of electrical equipment.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 3TX4490-3H. Secure your supply of reliable industrial automation components from us and ensure your systems remain protected.

Technical specifications

Type	Surge Suppressor (Varistor)
Voltage	48-127V AC / 70-150V DC
Mounting	Plug-in
Compatibility	Siemens contactors (with/without aux switch blocks)

Common applications

Motor control

Industrial automation

Control panels

Power distribution

Electrical protection

Switchgear

Compatible systems

Siemens contactors (with or without auxiliary switch blocks)

Also known as

Siemens 3TX4490-3H

Replaces / compatible with

Designed to be used with various Siemens contactors to provide overvoltage protection.

Technical note

Expert tip

Properly installed, this suppressor helps to mitigate the effects of transient overvoltages, extending the operational life of contactors and associated control gear.

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Frequently asked questions

What voltage ranges does the Siemens 3TX4490-3H surge suppressor cover?

The Siemens 3TX4490-3H surge suppressor is designed for AC systems operating within a range of 48-127V and for DC systems within a range of 70-150V. This broad coverage makes it suitable for many industrial applications.