Main Switch
A main switch is used to isolate the electrical supply to an installation or switchboard. Positioned at the point of entry, it allows the entire system to be safely disconnected for maintenance, testing or emergency situations. Common across residential, commercial and industrial installations, main switches provide a clear and accessible means of supply isolation in line with Australian installation requirements.
What Is a Main Switch?
A main switch functions as a supply isolation device, disconnecting all active conductors from the incoming supply. Often referred to as a main isolator switch or switch disconnector, it is designed for manual operation and must be clearly identifiable within the switchboard.
Unlike protective devices, a main switch is not intended to respond to fault conditions. Its role is to provide a reliable means of isolating the installation from the power source when required.
Isolation & Compliance Requirements
Main switches must meet specific installation and accessibility requirements to ensure safe operation. They are typically installed at the origin of the installation and must be readily accessible for occupants, maintenance personnel or emergency services.
Compliance with Australian standards requires correct selection based on load capacity, system voltage and installation type. Labelling, positioning and switching capability must align with site requirements to ensure safe and effective isolation.
Integration in Switchboards
Main switches are installed within switchboards as the primary point of control for incoming supply. They are commonly used alongside isolators for equipment-level isolation and coordinated with downstream devices such as circuit breakers.
Correct integration with panel board assemblies and broader electrical distribution systems ensures consistent operation across the installation while maintaining clear separation between supply isolation and circuit protection.
Application & Integration
Main switches provide a critical control point within electrical installations, allowing safe disconnection of supply when required. When correctly specified and installed, they support compliance, improve safety during maintenance and ensure reliable operation across residential and commercial switchboard systems.
We can source just about anything, submit a request and we'll get back to you soon.