Product description Key benefits — why you need this switch - Safe, reliable load isolation for AC systems up to 660 V and 100 A: protects equipment and personnel by providing a dedicated load circuit breaker function rated Ui 660V, Ith 100A. - Full 3-phase switching in one device: three poles operate together to isolate or connect all phases simultaneously, eliminating phase imbalance and simplifying wiring. - Clear, positive ON/OFF control with rotary cam action: the 2-position rotary cam changeover provides unequivocal switching positions for maintenance and operation. - Auxiliary contact capability for control and interlocking: three normally open (3NO) contacts allow easy integration into control circuits, alarms, or motor starters without additional relays. What it does (functions and performance) - Load circuit breaker switch for AC service, designed to handle continuous currents up to 100 A and system voltages up to 660 V. - 3-pole configuration for coordinated switching of three-phase loads. - ON/OFF main function for making or breaking the load circuit. - 3NO auxiliary contacts provide dry signal outputs for control panels, PLC inputs, or indicator lamps. - 2-position rotary cam changeover mechanism delivers robust, repeatable switching between two defined positions. Compatibility and application notes - Intended for use in AC distribution and control panels where a three-phase load needs a dedicated breaker-switch with auxiliary signalling. - Works with standard three-phase supplies up to the rated voltage and current (Ui 660V, Ith 100A). - Auxiliary contacts are normally open (3NO) — suitable for applications that require a contact to close only when the switch is in the ON position. Practical use scenarios - Motor control panel: use as the main load switch and breaker for a three-phase motor, with the 3NO contacts feeding a control circuit or interlock to prevent accidental start during maintenance. - Distribution boards in light industrial or commercial buildings: serve as a compact three-pole load breaker for feeders supplying groups of loads, with auxiliary contacts tied into monitoring or alarm systems. - Machine tool or production line isolation: provide clear ON/OFF control and status feedback to PLCs or supervisory systems while reliably interrupting three-phase power under fault or maintenance conditions. Why it stands out - Combines load-breaking capability and auxiliary signalling in a single, three-pole device for straightforward integration into three-phase electrical systems. - Rotary cam changeover ensures positive, repeatable switching positions for operational clarity and safety. - Specified ratings (Ui 660V, Ith 100A) make the device suitable for common industrial and commercial three-phase applications without additional adaptation. Specifications (as provided) - Function: Load circuit breaker switch for AC - Rated voltage (Ui): 660 V - Rated current (Ith): 100 A - Poles: 3 (suitable for three-phase operation) - Main function: ON / Off - Auxiliary contacts: 3 normally open (3NO) - Switch type: 2-position rotary cam changeover Ordering and integration tips - Confirm system voltage and supply type are AC and do not exceed the specified Ui 660V. - Ensure load current does not exceed Ith 100A and provide appropriate upstream protection if transient or short-circuit conditions require it. - Use the 3NO auxiliary contacts for control signalling, status indication, or interlocks; wire according to your control scheme and safety standards.