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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3TX7402-3G |
| Alternative Part Number | 3TX74023G |
| Manufacturer | Siemens |
| Surge Suppressor Type | Varistor |
| Suitable Contactor Sizes | S0, S1, S2 |
| Voltage Range for AC | 24 to 48 V AC |
| Voltage Range for DC | 24 to 70 V DC |
| Control Supply Voltage Frequency | 50 Hz (1 rated value), 60 Hz (2 rated value) |
| Product Designation | Surge suppressor |
| Type of Voltage of the Control Supply Voltage | AC/DC |
| Certificates/Approvals | General Product Approval, Declaration of Conformity, other Confirmations |
| Commodity Code | 853630 |
The Siemens 3TX7402-3G is a robust surge suppressor varistor designed to protect electrical installations from voltage spikes. This component is specifically engineered for mounting to the coil terminal of contactors within the size range of S0 to S2. It is suitable for a variety of industrial applications where contactors are used to control motors, pumps, and other machinery.
The 3TX7402-3G is capable of handling control supply voltages from 24 to 48 V AC and 24 to 70 V DC, making it a versatile choice for systems operating within these voltage ranges. Its design incorporates a varistor, which is an electronic component with a voltage-dependent resistance, providing effective suppression of transient overvoltages and ensuring the longevity and reliability of the contactor coils it is protecting.
This surge suppressor is a critical component for maintaining the integrity of electrical systems, particularly in environments where equipment is susceptible to disturbances caused by lightning strikes, switching surges, or other sources of electrical noise. By installing the Siemens 3TX7402-3G, users can expect a reduction in downtime and maintenance costs associated with voltage-related damage to their contactor coils.
With its straightforward installation process and general product approvals, the Siemens 3TX7402-3G is a practical and efficient solution for safeguarding your electrical control systems against unexpected voltage transients.
Commonly Asked Questions
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Frequently Asked Questions
What is the purpose of a surge suppressor varistor?
A surge suppressor varistor is designed to protect electrical devices from voltage spikes. It acts as a voltage-clamping device, allowing it to absorb and dissipate the energy from over-voltages, thus safeguarding the connected equipment.
Can this surge suppressor varistor be used with both AC and DC control circuits?
Yes, the Siemens 3TX7402-3G surge suppressor varistor is suitable for use with both AC and DC control circuits, providing versatility in its application.
What contactor sizes is this surge suppressor compatible with?
The surge suppressor is compatible with contactors of sizes S0, S1, and S2, making it a flexible solution for various contactor applications.
What are the voltage ratings for this surge suppressor?
The surge suppressor can handle control supply voltages of 24 to 48 V AC and 24 to 70 V DC, accommodating a range of power supply requirements.
How is the surge suppressor varistor mounted?
The surge suppressor varistor is designed for mounting directly to the coil terminal of the contactors, ensuring a secure and reliable connection.
Does this surge suppressor have any certifications or approvals?
Yes, the surge suppressor comes with general product approvals and a declaration of conformity, indicating compliance with relevant standards and regulations.
What is the design of the surge suppressor?
The surge suppressor is designed with a varistor, which is a type of resistor with a voltage-dependent non-linear resistance, providing effective surge protection.
Is there a specific frequency rating for the control supply voltage of this surge suppressor?
The surge suppressor is rated for control supply voltage frequencies of 50 Hz and 60 Hz, which are the standard frequencies for electrical systems in many regions.
