Reliable AC Isolator Switch Manufacturer

An AC isolator is a manual, "off-load" or "load-breaking" switch. Its sole purpose is to provide a visible, secure separation from the power source for maintenance safety. It does not monitor the current. A circuit breaker, however, is an automatic protection device that detects overloads and short circuits, tripping internally to stop the fault. For total safety, an isolator is installed downstream from a breaker.

Yes. Our UKPW series enclosed isolators are rated IP66. The enclosures are manufactured from UV-resistant, flame-retardant Polycarbonate (PC), which prevents water ingress from heavy rain and protects internal components from dust and sun degradation.

It means the terminal design prevents human fingers from accidentally touching live electrical parts during wire installation or routine checks. This design significantly reduces the risk of electric shock for operators and maintenance staff.

Yes. All our rotary handles are designed with built-in padlock holes. Maintenance personnel can lock the switch in the "OFF" position using padlocks, ensuring the power cannot be accidentally turned on while machinery is being serviced.

The rated current of the isolator must be equal to or greater than the Full Load Ampere (FLA) of the equipment it controls. For inductive loads like heavy motors, we recommend selecting an isolator with a rating at least 1.25 times the FLA to handle startup surges. We offer models ranging from 20A up to 150A.

AC Isolator Switches are critical in virtually all industrial and commercial settings:

• Industrial Machinery: For isolating power to CNC machines, conveyor systems, and presses for safe maintenance.
• HVAC Systems: To disconnect power to air handling units, chillers, and pumps.
• Power Distribution Panels: As a main or sub-circuit disconnector in distribution boards.
• Renewable Energy Systems: For isolating solar inverters and battery systems.
• Commercial Buildings: For controlling power to large lighting circuits, water heaters, and other fixed appliances.

These specifications define the switch's capacity and configuration:

Current Rating (e.g., 32A, 63A): The maximum current the switch can safely carry and break. You must select a rating equal to or higher than the circuit it is protecting.

Number of Poles (e.g., 2-Pole, 3-Pole, 4-Pole): This indicates how many separate current-carrying conductors it controls.

• 2-Pole: Controls Line (Live) and Neutral (common for 230V single-phase).
• 3-Pole: Controls three Line conductors (for 400V three-phase without neutral).
• 4-Pole: Controls three Line conductors and the Neutral (for 400V three-phase systems).