Original price was: £108.53.£75.54Current price is: £75.54.
The IMO IS4P125 is a heavy-duty 125 A four-pole enclosed rotary isolator switch designed to provide safe and reliable electrical isolation for industrial machinery, commercial installations and electrical distribution systems. Housed within a durable IP65-rated flame-retardant polycarbonate enclosure, it provides excellent protection against dust and water ingress, making it suitable for demanding indoor and outdoor environments.
Designed for three-phase plus neutral electrical systems, the IS4P125 features a highly visible lockable red and yellow rotary handle, allowing equipment to be safely isolated before maintenance or servicing. An interlocked enclosure lid prevents access while the switch is in the ON position, helping to improve operator safety and reduce the risk of accidental contact with live parts.
With external mounting points, multiple cable gland knockouts and generous cable capacity, the IMO IS4P125 is ideal for industrial machinery, HVAC equipment, pumps, renewable energy installations and commercial electrical distribution where dependable local isolation is essential.
The IMO IS4P125 provides a dependable means of disconnecting high-current three-phase electrical equipment before maintenance or servicing. Its four-pole switching mechanism isolates all live conductors simultaneously, while the lockable handle and interlocked enclosure help reduce the risk of accidental operation. Designed for demanding industrial environments, it delivers long-term reliability where dependable local isolation is required.
Its rugged IP65 enclosure makes it ideal for factories, workshops, HVAC systems, pumps, renewable energy projects and commercial electrical distribution where reliable protection from dust and water ingress is essential.
| Current | 125 A |
|---|---|
| Voltage | 440 V |
| Phase | Three Phase |
The IMO IS4P125 provides safe local isolation of high-current three-phase electrical circuits for machinery, distribution equipment and industrial installations.
The isolator has a rated operational current of 125 A (AC21).
Yes. The enclosure has an IP65 protection rating, making it suitable for indoor and outdoor environments where protection against dust and water is required.
Yes. The red and yellow rotary operating handle can be padlocked in the OFF position to help prevent unauthorised operation during maintenance.
It is designed for four-pole three-phase plus neutral electrical systems operating between 230 V and 440 V AC.
IMO enclosed rotary isolators are trusted by electrical contractors, machine builders and industrial engineers for dependable electrical isolation, robust construction and reliable long-term performance in demanding industrial environments.{ "@context": "https://schema.org/", "@type": "Product", "name": "IMO IS4P125 Enclosed Rotary Isolator 125 A 4 Pole IP65", "sku": "IS4P125", "mpn": "IS4P125", "brand": { "@type": "Brand", "name": "IMO" }, "category": "Rotary Isolator Switches", "description": "IMO IS4P125 enclosed 125 A four-pole rotary isolator with IP65 flame-retardant polycarbonate enclosure, lockable rotary handle and surface mounting for industrial electrical isolation.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Rated current", "value": "125 A" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "4" }, { "@type": "PropertyValue", "name": "Operating voltage", "value": "230–440 V AC" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP65" }, { "@type": "PropertyValue", "name": "Mounting type", "value": "Surface mounting" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "inLanguage": "en-GB", "mainEntity": [ { "@type": "Question", "name": "What is the IMO IS4P125 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The IMO IS4P125 provides safe local isolation of high-current three-phase electrical circuits for machinery, distribution equipment and industrial installations." } }, { "@type": "Question", "name": "What is the current rating of the IS4P125?", "acceptedAnswer": { "@type": "Answer", "text": "The isolator has a rated operational current of 125 A (AC21)." } }, { "@type": "Question", "name": "Is the enclosure suitable for outdoor use?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The enclosure has an IP65 protection rating, making it suitable for indoor and outdoor environments where protection against dust and water is required." } }, { "@type": "Question", "name": "Can the rotary handle be locked?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The red and yellow rotary operating handle can be padlocked in the OFF position to help prevent unauthorised operation during maintenance." } }, { "@type": "Question", "name": "What type of electrical systems is the IS4P125 designed for?", "acceptedAnswer": { "@type": "Answer", "text": "It is designed for four-pole three-phase plus neutral electrical systems operating between 230 V and 440 V AC." } } ] }
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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...