An Isolator Panel is a crucial electrical panel that houses isolator switches used to manually disconnect specific sections of an electrical system. Unlike circuit breakers, isolators are not designed to interrupt load current but rather to safely isolate equipment or circuits for maintenance, inspection, or emergencies, ensuring no live current is present during work. This disconnection enhances the safety of personnel and protects equipment from accidental energization.
The panel typically includes a manual isolator switch (also known as a disconnector), and may feature interlocks, fuse switch disconnectors, or padlocking mechanisms to prevent unauthorized access or reconnection. Since it lacks load-breaking capability, the isolator must only be operated under no-load conditions. The enclosure is usually made of metal or thermoplastic, suitable for both indoor and outdoor environments, depending on the application.
Isolator Panels are widely used near HVAC units, motors, pumps, and in solar PV systems—especially to isolate inverters or the grid connection. They are also common in industrial, commercial, and emergency shutdown systems where clear, visible isolation is critical. At Amtech Power, our Isolator Panels are designed for safety, durability, and compliance, making them a simple yet essential component in power distribution and maintenance protocols.
An Isolator Panel is an electrical panel that contains isolator switches used to disconnect a part of an electrical circuit manually and safely for maintenance, inspection, or emergency purposes, without affecting the rest of the system.
To isolate electrical equipment or circuits from the main power supply.
To provide a safe working environment by ensuring no live current is present during maintenance.
To offer visible disconnection (especially in high-voltage systems).
Isolator Switch / Disconnector (manual operation)
No load-breaking capability (must be used only when the circuit is off or under no-load conditions)
Often mounted with fuse switch disconnectors, interlocks, or padlocking for safety.
Metal or thermoplastic enclosure (indoor or outdoor use)
Near motors, HVAC units, machinery, or pumps
In solar PV systems, to isolate the inverter from the array or grid
At industrial or commercial sites to isolate main or sub-feeders
As a safety switch in emergency shutdowns
Simple and cost-effective means of circuit isolation
Increases safety for maintenance personnel
Prevents accidental back-feeding of power during work
