Siemens 3TX4490-4A


The Siemens 3TX4490-4A is a surge suppressor designed to protect auxiliary switch blocks and contactors from voltage spikes. It features an interference suppression diode coupled with an LED indicator, making it easy to monitor the device’s status. Suitable for DC voltages ranging from 24 to 70 V, this component helps enhance the reliability of your control circuits by minimizing electrical noise and preventing damage. This surge suppressor is available through BSP Automation, providing a practical solution for maintaining stable and secure industrial automation systems.
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