ETI SSQ 425 load changeover switch 4P 25A 1-0-2 (2421444)

This ETI SSQ 425 load changeover switch is intended for manual switching of electrical circuits in positions 1-0-2. Such operation makes it possible to transfer a load between two power sources or between separate circuits without complex control equipment. The device is used in distribution boards, backup power systems, and other electrical installations where clear and safe load switching is required. The switch has 4 poles, which allows simultaneous switching of four-wire circuits. Its rated current is 25 A, making it suitable for circuits with a corresponding load level. The nominal frequency of 50/60 Hz ensures compatibility with standard AC networks. The device complies with IEC 60947-3, the standard covering low-voltage switches, disconnectors, and switching devices. For wiring connections, conductors with a cross-section of up to 16 mm² are permitted. This simplifies installation in panel equipment and allows the switch to be used in typical power circuits. The IP20 degree of protection provides basic protection against accidental contact with live parts by fingers and limits the product’s use to enclosed electrical panels or other protected enclosures. The SSQ 425 series configuration and 1-0-2 switching logic make this device a practical solution for manual load transfer in residential, commercial, and industrial installations. With four-pole design, 25 A current rating, connection capacity up to 16 mm², and compliance with IEC 60947-3, it can be applied in systems with two power sources or in setups where electrical supply needs to be redistributed within one facility.