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Siemens 3TX4490-3A Surge Suppressor Diode - 12-250V DC

Siemens 3TX4490-3A surge suppressor diode for DC circuits.

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ManufacturerSiemens

Part number3TX4490-3A

Type Surge Suppressor / Suppression Diode

Voltage Range 12-250 V DC

Compatibility Contactors Size 00 (with/without auxiliary switch blocks)

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Surge protection for DC circuits Wide voltage range (12-250V DC) Designed for Siemens contactors Easy plug-on installation Protects coils from transients

Product description

The Siemens 3TX4490-3A is a surge suppressor, also known as a suppression diode, designed for DC circuits ranging from 12V to 250V. It is intended for plugging onto Siemens contactors, both with and without auxiliary switch blocks, specifically for contactor sizes 00.

This component is crucial for protecting control circuits and contactor coils from voltage spikes and transients, thereby extending the lifespan of connected equipment. It is commonly used in control panels and motor starter assemblies across various industrial applications.

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Technical specifications

Type	Surge Suppressor / Suppression Diode
Voltage Range	12-250 V DC
Compatibility	Contactors Size 00 (with/without auxiliary switch blocks)

Common applications

Control Panels

Motor Starters

Automation Systems

Industrial Controls

Contactor Circuits

Compatible systems

Siemens Contactors Size 00

Also known as

Siemens Suppression Diode 3TX4490-3A 3TX4490-3A Contactor Accessory Siemens Voltage Protector

Technical note

Expert tip

This module is designed to plug directly onto compatible Siemens contactors (size 00) without requiring separate wiring for installation.

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Frequently asked questions

What is the voltage range for the Siemens 3TX4490-3A surge suppressor?

The Siemens 3TX4490-3A surge suppressor is designed for DC circuits and operates within a voltage range of 12V to 250V DC. This broad range makes it suitable for various DC control applications.