Why Choose the IMO IS4P150 Enclosed Rotary Isolator?
The IMO IS4P150 is a heavy-duty 150 A four-pole enclosed rotary isolator switch engineered to provide reliable local isolation for high-current industrial machinery, commercial installations and electrical distribution systems. Designed for three-phase plus neutral applications, it enables all live conductors to be disconnected simultaneously, making it ideal for demanding industrial environments.
Supplied in a durable IP65 flame-retardant polycarbonate enclosure, the IS4P150 offers excellent protection against dust and water ingress, allowing installation both indoors and outdoors. A highly visible red and yellow lockable rotary handle provides clear ON/OFF indication, while the interlocked enclosure lid prevents access when the switch is energised, helping improve operator safety.
With generous cable capacity, multiple gland knockouts and external mounting points, the IMO IS4P150 is widely specified for heavy industrial machinery, motor isolation, HVAC equipment, renewable energy installations and commercial power distribution systems where dependable local isolation is essential.
Key Advantages
- Heavy-duty 150 A enclosed rotary isolator.
- Four-pole switching for three-phase plus neutral systems.
- IP65 weather-resistant enclosure suitable for indoor and outdoor use.
- Lockable red and yellow rotary operating handle.
- Interlocked enclosure lid enhances operator safety.
- Suitable for industrial machinery, motors and power distribution.
Key Features
- IMO IS4P enclosed rotary isolator series.
- 150 A AC21 rated operational current.
- Four-pole configuration.
- 230–440 V AC operating voltage.
- 690 V rated insulation voltage.
- IP65 flame-retardant polycarbonate enclosure.
- Lockable rotary operating handle.
- IEC EN 60947-3 compliant.
Reliable High-Current Isolation
The IMO IS4P150 provides dependable isolation for larger electrical loads, allowing maintenance personnel to safely disconnect equipment before servicing. Its four-pole switching arrangement isolates all three phases and the neutral conductor simultaneously, while the lockable rotary handle and interlocked enclosure support safe lock-off procedures.
With a motor rating of up to 70 kW at 415 V AC (AC23A), the IS4P150 is ideally suited to large motors, pumps, compressors, HVAC equipment, manufacturing machinery and commercial electrical distribution systems requiring reliable high-current isolation.
Typical Applications
- Large industrial machinery.
- Three-phase motor isolation.
- Manufacturing plants.
- HVAC and refrigeration systems.
- Pump and compressor installations.
- Commercial electrical distribution.
- Renewable energy and solar AC isolation.
- Processing and automation equipment.
