A main switch (or isolator) is designed purely to switch power on and off manually—it does not provide overcurrent protection. A circuit breaker automatically trips during overload or fault conditions to protect circuits. Main switches are used for isolation during maintenance and servicing, allowing electricians to safely de-energise circuits.
Our main switches and isolators are engineered to provide reliable and safe disconnection of electrical circuits. With robust construction, easy operation, and compliance with safety standards, these devices are ideal for enhancing the safety and efficiency of electrical systems.
Main switches are electrical isolator devices that disconnect entire installations or circuits from power supply. Available in 80A-100A ratings with single-pole, double-pole, or three-pole configurations, they enable safe maintenance isolation, emergency disconnection, and comply with AS/NZS 3000:2018 Australian standards.
Schrack Main switches and isolators are critical components in electrical systems, providing the ability to safely disconnect power for maintenance, emergency, and safety purposes. These devices ensure that circuits can be securely isolated, protecting both personnel and equipment from electrical hazards.
As a licensed electrician or electrical contractor, you need reliable main switches that meet Australian standards while keeping your projects on schedule and within budget. iSupply Electrical
Our main switches and isolators are engineered to provide reliable and safe disconnection of electrical circuits. With robust construction, easy operation, and compliance with safety standards, these
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Circuit breakers automatically disconnect power when a short circuit fault is detected downstream or when the circuit becomes overloaded, exceeding the electrical cable current capacity. Air Circuit
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1-Pole & 3-Pole Main Switches Essential Isolation for Your System At AGM Electrical Supplies, we offer a reliable range of 1-pole and 3-pole main switches to serve as your board''s primary isolation point.
What''s the difference between a main switch and a circuit breaker? A main switch (or isolator) is designed purely to switch power on and off manually—it does not provide overcurrent protection. A
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