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3VA9988-0AA12
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3VA9988-0AA12 |
| Alternative Part Number | 3VA99880AA12 |
| Manufacturer | Siemens |
| Product Type | Auxiliary Switch Changeover Contact |
| Suitable For | 3VA1 and 3VA20 up to 3VA25 Circuit Breakers |
| Voltage Rating | 240 V |
| Current Rating | 6 A |
| Dimensions | 7.1 x 34.5 x 65.2 mm |
| Height | 56 mm |
| Width | 7 mm (1 slot) |
| Depth | 30 mm |
| Net Weight | 30 g |
| Tightening Torque (Min) | 0.4 N·m |
| Tightening Torque (Max) | 0.5 N·m |
| IEC Stripped Length | 15 mm |
| Connectable Conductor Size | Min. 0.5 mm², Max. 1.5 mm² |
| AWG Size Range | Min. 20, Max. 16 |
| UL Stripped Length | 0.6 in |
| UL Tightening Torque (Min) | 3.5 lbf·in |
| UL Tightening Torque (Max) | 4.4 lbf·in |
| Degree of Pollution | 3 |
| Commodity Code | 853650 |
| Operating Temperature Range | - |
| Storage Temperature Range | - |
| Humidity | - |
| Certifications | General Product Approval, EMC, Miscellaneous KC, Declaration of Conformity, Test Certificates |
The Siemens 3VA9988-0AA12 is a meticulously engineered auxiliary switch changeover contact designed to complement the 3VA1 and 3VA20 up to 3VA25 range of circuit breakers. This compact accessory, with dimensions of 7.1 x 34.5 x 65.2 mm, is an essential component for industrial and commercial electrical systems, ensuring reliable switching operations within your circuit protection setup.
Crafted for durability and consistent performance, the 3VA9988-0AA12 boasts a thermal current rating of 6 A and can handle insulation voltages up to 690 V, with a surge voltage resistance rated at 4 kV. Its operational voltage capabilities include a minimum of 240 V at AC 50 Hz and 250 V at DC, making it versatile for various electrical applications.
Installation and maintenance are straightforward, thanks to its user-friendly design featuring a single 7 mm slot for mounting. The switch's connectable conductor cross-section is up to 1.5 mm², with a wire stripping length of 15 mm, ensuring secure and reliable connections. The tightening torque specifications range from a minimum of 0.4 N·m to a maximum of 0.5 N·m, providing a robust and secure fit for screw-type terminals.
The Siemens 3VA9988-0AA12 is a testament to the brand's commitment to quality, offering a reliable solution for enhancing the functionality of your circuit breakers. Whether you're upgrading an existing system or implementing new installations, this auxiliary switch changeover contact is an excellent choice for ensuring efficient and safe electrical operations.
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Frequently Asked Questions
What is the purpose of an auxiliary switch changeover contact?
An auxiliary switch changeover contact is used to indicate the status of a circuit breaker, such as whether it's open or closed. It can also be used to provide a signal for other control or monitoring devices within an electrical system.
Can this auxiliary switch be used with any circuit breaker?
No, this auxiliary switch is specifically designed for use with Siemens 3VA1 and 3VA20 up to 3VA25 circuit breakers.
What are the voltage and current ratings for this auxiliary switch?
The auxiliary switch has a rated operational voltage of 240 V at AC 50 Hz and a thermal current limit of 6 A.
What are the dimensions of this auxiliary switch?
The dimensions of the auxiliary switch are 7.1 x 34.5 x 65.2 mm.
How is the auxiliary switch installed?
The auxiliary switch is installed onto the circuit breaker using a slot that measures 7 mm. It should be securely fastened to ensure proper operation.
What is the degree of pollution for this auxiliary switch?
The degree of pollution for this auxiliary switch is rated at 3, which indicates that it is designed to operate in environments with non-conductive pollution or dry, non-conductive pollution that becomes conductive due to condensation.
What is the overvoltage category for this auxiliary switch?
The overvoltage category for this auxiliary switch is III, which means it is suitable for use in equipment in fixed installations and similar applications.
What is the rated insulation voltage for this auxiliary switch?
The rated insulation voltage (Ui) for this auxiliary switch is 690 V.
What is the rated impulse withstand voltage for this auxiliary switch?
The rated impulse withstand voltage for this auxiliary switch is 4 kV.
What is the thermal current limit for this auxiliary switch?
The thermal current limit (Ith) for this auxiliary switch is 6 A.
