KH305 is a threepole onoff transfer push button switch designed for use in electrical start control boxes. It provides reliable start/stop control with a transfer switching action in a compact package. Key features and specifications Model: KH305 Poles: 3P (threepole design for threephase circuits) Function: Onoff transfer push button switch Current and voltage ratings: 30A at 250V, or 20A at 380V Application: Intended for use in control boxes and electrical start switch configurations Package quantity: 1 piece Purpose: Ideal for panel mounting in electrical control panels where a push button provides start/stop control and transfer switching as part of the control circuit Key attributes Functionality: Provides onoff control with a transfer push button mechanism, suitable for starting and stopping electrical equipment Compatibility: Designed for threephase systems with voltage ratings of 250V (up to 30A) or 380V (up to 20A) Size and mounting: Intended for use within control boxes and panels (exact dimensions and mounting details should be confirmed via the datasheet) Material and build: Specified as a push button switch for control box applications (no material details provided) Performance: Delivers reliable switching performance for electrical start applications in threephase environments Use cases and applications Start/stop control of a threephase motor in small manufacturing equipment, CNC machines, or presses Transfer switching inside a control box to route power between circuits or sources as part of a panel configuration Integration into control panels for pumps, conveyors, or other automated equipment requiring a manual pushbutton start/stop action Notes This description reflects the product identity KH305, its 3P onoff transfer push button switch function, and the specified ratings of 30A/250V and 20A/380V in a 1 piece package. For wiring details, mounting, and exact terminal configurations, refer to the product datasheet and installation guidelines.