KH Series Onoff 3P 30A/250V 20A/380V Transfer Push Button Switch KH305 is a threepole onoff switch designed for integration into KH Series control boxes and electrical electronic starters. It provides reliable start and stop control with a transfer pushbutton action, suitable for a range of motor and equipment control applications. The switch supports two voltage/current configurations: 30A at 250V and 20A at 380V, enabling compatibility with different power systems. Key benefits Simple onoff control for threephase circuits with a single push button. Dual voltage/current ratings allow use with 250V systems up to 30A or 380V systems up to 20A. Compatible with KH Series control boxes and electronic starters, enabling straightforward installation and retrofit. Robust pushbutton action designed for frequent operation in panelmounted start/stop applications. Compact form within KH Series assemblies, aiding tidy control panels and efficient wiring. Key attributes Configuration: 3P (threepole) Ratings: 30A at 250V; 20A at 380V Function: Transfer push button switch, onoff control Series/model: KH Series, KH305 Intended use: Control box, electrical electronic starter, start switch Compatibility: Designed for KH Series control boxes and related equipment Material and size: Not specified in the available specification listing Performance notes: Based on the stated voltage and current ratings for safe operation in appropriate circuits Use cases Use case 1: Start/stop control for a threephase motor in a manufacturing line powered by 250V, with motor current up to 30A. Use case 2: Start switch in a control panel for a pump or conveyor system operating from 380V up to 20A. Use case 3: Replacement or retrofit part in existing KH Series installations in automated equipment, providing a standard and compatible KH305 transfer push button switch. The KH305 delivers a practical, professional solution for panel builders and machine operators who require reliable threepole onoff control with compatible ratings for both 250V and 380V systems, within KH Series control box configurations.