ETI SSQ 1125 Load switch 1P 125A 1-0-2 (2421419)

ETI SSQ 1125 is a single-pole load switch designed for manual switching of electrical circuits in a 1-0-2 operating sequence. Such a device is used in distribution boards, power supply systems, and other low-voltage installations where it is necessary to switch between two sources or disconnect a circuit with a clear neutral position. The 1-0-2 switching arrangement provides defined position selection and makes the device suitable for reserve transfer and circuit control tasks. The switch belongs to the AC-22B utilization category, which indicates suitability for switching active and mixed loads in AC networks. It is rated for 125 A at 230 V AC, so it can be used in circuits with significant current demand within the specified electrical limits. The single-pole design allows control of one line, while the rated frequency of 50/60 Hz makes the device applicable in common power systems. Compliance with IEC 60947-3 confirms that the product is intended for switching, isolation, and control of low-voltage electrical circuits. For conductor connection, the switch is designed for wires with a cross-section up to 50 mm². This allows integration into installations with appropriately sized cables and gives flexibility in selecting the wiring section according to the load and project requirements. The IP20 degree of protection means the device is protected against access to hazardous parts by solid objects of a certain size, but it does not provide protection against moisture. For this reason, installation should be carried out inside a distribution enclosure or another closed electrical cabinet. The SSQ 1125 series combines manual operation, clear 1-0-2 position logic, and parameters suited for use in low-voltage distribution applications. It can be applied where a visible and straightforward switching solution is needed for load disconnection, source selection, or controlled circuit transfer. Thanks to its rated current, voltage, and standardized construction, the device fits into technical installations that require reliable manual control of one electrical line.