Original price was: £125.67.£87.46Current price is: £87.46.
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.
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.
| Current | 150 A |
|---|---|
| Voltage | 440 V |
| Phase | Three Phase |
The IMO IS4P150 provides safe local isolation for high-current three-phase electrical systems, machinery, motors and distribution equipment.
The IMO IS4P150 has a rated operational current of 150 A (AC21).
The isolator is rated for three-phase motors up to 70 kW at 415 V AC (AC23A).
Yes. The flame-retardant enclosure is rated to IP65, providing protection against dust and water ingress when correctly installed.
Yes. The red and yellow rotary operating handle can be locked in the OFF position to support safe maintenance and lock-off procedures.
Yes. The IMO IS4P150 complies with IEC EN 60947-3 and carries CE and SEMKO approvals.
IMO enclosed rotary isolators are trusted by electrical engineers, panel builders, OEMs and industrial contractors for dependable isolation, robust construction and reliable performance in demanding industrial and commercial electrical installations.{ "@context": "https://schema.org", "@type": "Product", "name": "IMO IS4P150 Enclosed Rotary Isolator 150 A 4 Pole IP65", "sku": "IS4P150", "mpn": "IS4P150", "brand": { "@type": "Brand", "name": "IMO" }, "category": "Enclosed Rotary Isolator Switch", "description": "IMO IS4P150 150 A four-pole enclosed rotary isolator with IP65 flame-retardant polycarbonate enclosure, lockable rotary handle and 70 kW motor rating.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Rated current", "value": "150 A" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "4" }, { "@type": "PropertyValue", "name": "Operating voltage", "value": "230–440 V AC" }, { "@type": "PropertyValue", "name": "Motor rating", "value": "70 kW at 415 V AC" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP65" }, { "@type": "PropertyValue", "name": "Maximum cable size", "value": "35 mm²" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the IMO IS4P150 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The IMO IS4P150 provides safe local isolation for high-current three-phase electrical systems, machinery, motors and distribution equipment." } }, { "@type": "Question", "name": "What is the current rating of the IS4P150?", "acceptedAnswer": { "@type": "Answer", "text": "The IMO IS4P150 has a rated operational current of 150 A (AC21)." } }, { "@type": "Question", "name": "What motor size is the IS4P150 suitable for?", "acceptedAnswer": { "@type": "Answer", "text": "The isolator is rated for three-phase motors up to 70 kW at 415 V AC (AC23A)." } }, { "@type": "Question", "name": "Is the enclosure suitable for outdoor installations?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The enclosure is IP65 rated for indoor and outdoor installations." } }, { "@type": "Question", "name": "Can the rotary handle be padlocked?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The rotary operating handle can be locked in the OFF position during maintenance." } } ] }
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...