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Siemens 3TX7402-3T RC Element Surge Suppressor

Siemens 3TX7402-3T RC Element Surge Suppressor for contactors S0-S2.

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ManufacturerSiemens

Part number3TX7402-3T

Type RC Element Surge Suppressor

Voltage Range 127-240 V AC

Voltage Range 150-250 V DC

For Contactor Sizes S0, S1, S2

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RC Element Suppression Higher Voltage Protection 127-240V AC / 150-250V DC Range Includes Cable Spacer Mounts to Contactor Coil Terminal Protects S0-S2 Contactors

Product description

The Siemens 3TX7402-3T is an RC element surge suppressor, providing enhanced protection against voltage transients for control circuits. It is designed for higher voltage applications, operating in the range of 127-240 V AC or 150-250 V DC. Similar to its varistor counterpart, this unit includes a cable spacer and is intended for direct mounting to the coil terminal of Siemens contactors sized S0 to S2.

This RC element suppressor offers a slower but more effective dissipation of transient energy compared to simple varistors, particularly beneficial for protecting sensitive coil electronics. It's ideal for applications in industrial settings with higher line voltages, ensuring the reliability of contactors in demanding environments.

Stanlo Automation, a veteran-owned supplier of industrial automation surplus, provides the Siemens 3TX7402-3T. We understand the importance of dependable components and offer this part to help you maintain optimal system performance and prevent costly downtime.

Technical specifications

Type	RC Element Surge Suppressor
Voltage Range	127-240 V AC
Voltage Range	150-250 V DC
For Contactor Sizes	S0, S1, S2
Mounting	Coil Terminal

Common applications

Industrial Control Panels

Motor Control

Power Systems

Automation Machinery

Manufacturing Processes

Compatible systems

Siemens 3TB44 Contactors Siemens 3TF44 Contactors Siemens S0-S2 Sizing

Also known as

Siemens 3TX7402 3TX7402 RC suppressor Siemens Contactor Protection

Replaces / compatible with

This RC element surge suppressor is suitable for Siemens contactors of sizes S0, S1, and S2. It offers a more robust protection solution for higher voltage applications compared to basic varistors.

Technical note

Expert tip

The RC element provides a more gradual dissipation of energy compared to varistors, making it ideal for applications where frequent switching may induce significant transients.

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Frequently asked questions

What type of surge suppression does the Siemens 3TX7402-3T utilize?

The Siemens 3TX7402-3T employs an RC element for surge suppression. This type of circuit is effective at absorbing transient voltage spikes, offering enhanced protection for contactor coils in higher AC and DC voltage ranges (127-240V AC / 150-250V DC).