IMO IS08C 63A 4-Pole Enclosed Rotary Isolator – IP66 Rated High-Capacity AC Disconnect

This is the IMO IS08C 63A 4-Pole Enclosed Rotary Isolator – an IP66 Rated High-Capacity AC Disconnect available at SparksDirect for the best price. Purchase this item with confidence at Sparks today.

The IMO IS08C is a heavy-duty, surface-mounted rotary isolator designed for high-current applications. Rated at 63A, it is the robust choice for isolating large three-phase loads and the neutral simultaneously. It is housed in a high-impact, flame-retardant plastic enclosure that carries an IP66 rating, making it completely dust-tight and resistant to powerful water jets, which is essential for industrial or exposed outdoor environments.

Safety is the core focus of the IS08C design. The red and yellow high-visibility handle is padlockable in the OFF position, allowing for up to three padlocks to be fitted to prevent accidental re-energization during service (Lockout/Tagout). The switch mechanism utilizes "knife-edge" contacts for rapid arc suppression and long-term electrical reliability. It is commonly found in large-scale industrial plants, commercial refrigeration centers, and as the main AC disconnect for high-output solar PV inverters.

Technical Specifications

• Model Number: IS08C (Manufacturer Part No: PE69-4063)
• Type: Enclosed Rotary Isolator / Switch Disconnector
• Number of Poles: 4 Pole (3 Phases + Neutral)
• Rated Current: 63A (AC21)
• Rated Power: Approx. 22kW at 400V (AC23)
• Rated Voltage: 400V / 415V / 440V AC
• Insulation Voltage (U i​): 690V
• Ingress Protection: IP66 (Water and Dust Resistant)
• Handle Colour: Red/Yellow (Safety Standard)
• Locking: Padlockable in the OFF position
• Dimensions: 180mm (H) x 110mm (W) x 90mm (D)
• Standards: EN 60947-3, UL Approved, CE Marked

Frequently Asked Questions

Q: Can this switch be used for a 3-phase motor with no neutral?

A: Yes. While it has a fourth pole for the neutral, you can simply use the three phase poles and leave the neutral pole empty. This provides the same high-level isolation for standard 3-wire motors.

Q: Is this the same as a 63A Circuit Breaker (MCB)?

A: No. An MCB is a protective device that trips automatically during a fault. The IS08C is a manual switch; it will not trip on its own. Its purpose is to guarantee a physical break in the circuit so a technician can work safely without the risk of the power being restored remotely or accidentally.

Q: Does it include mounting holes on the outside of the box?

A: Most versions of the IS08C feature internal mounting points to preserve the IP66 rating. This ensures that no water can seep through the mounting screw holes into the main electrical chamber.

Who can install this?

Installation must be carried out by a qualified industrial electrician. Because this unit handles up to 63A, cable sizes (typically up to 16mm 2  or 25mm 2 ) are thick and difficult to work with. Proper termination torque is critical; a loose connection at 63A will generate extreme heat and lead to an electrical fire. The installer must also ensure all cable glands are correctly sized to maintain the watertight seal.

What is this for?

The IMO IS08C is the industry standard for High-Current Safety Disconnection:

• Large Machinery Isolation: Used for industrial conveyor systems, large industrial lathes, or heavy-duty packaging machines.
• High-Output HVAC: Serving as the main disconnect for massive commercial air conditioning chillers and rooftop air handling units.
• Solar PV Infrastructure: Acting as the primary AC isolator between high-capacity commercial inverters and the main building switchboard.
• Industrial Kitchens & Laundries: Isolating large-scale commercial ovens, industrial-sized washers, and high-energy steam systems.

Note: Some images and pictures are for reference only. The item may differ from the image/picture due to manufacturer's change. Should you require the exact item in the picture, please call or email us to enquire.

Need more detailed specs?

• ISO8-data.PDF (297.88 kB)