ETI SSQ 4100 Load Switch 1-0-2 4P 100A (2421448)

The ETI SSQ 4100 load switch is intended for manual switching of electrical circuits and for selecting one of three positions: 1-0-2. This operating scheme makes it suitable for transferring supply between two sources or isolating a circuit in the neutral position. Such functionality is used in distribution boards, control panels, and power supply switching systems where clear and reliable manual control of the circuit is required. The device belongs to the AC-22B utilization category, which means it is designed for switching mixed resistive and inductive loads with moderate overloads during connection and disconnection. This makes the switch suitable for load groups and distribution assemblies in commercial, industrial, and other electrical installations where circuits must be commutated under operating load. The model has 4 poles, a rated current of 100 A, and is designed for AC voltage up to 400 V. These characteristics allow it to be used in three-phase or multi-pole circuits where several conductors must be switched simultaneously. The rated frequency is 50/60 Hz, so the device is compatible with electrical networks operating at either standard frequency. The permissible conductor cross-section is up to 50 mm², which is important for power wiring and distribution connections with elevated current demand. The SSQ 4100 series complies with IEC 60947-3, the standard governing switches, disconnectors, and load-break switches. This confirms its intended use in low-voltage switching applications and helps ensure proper integration into standardized electrical equipment. The IP20 protection rating indicates protection against contact with hazardous internal parts by fingers or similar objects, while the enclosure does not provide protection against moisture. For this reason, installation is intended inside electrical cabinets, switchboards, or other enclosed assemblies. With its 1-0-2 three-position operation, 4-pole configuration, 100 A rating, and 400 V AC specification, the ETI SSQ 4100 provides a straightforward solution for switching power circuits where source selection or circuit isolation is needed. It is a practical choice for distribution and control systems that require manual load switching in accordance with IEC 60947-3.