Original price was: £94.70.£25.30Current price is: £25.30.
The IMO SI16-PEL64R-4 is a purpose-built 16 A four-pole DC isolator switch specifically engineered for photovoltaic (PV) installations. Unlike AC switches adapted for DC applications, the SI16 Series is designed as a true DC isolator, providing safe and reliable disconnection between solar panel arrays and DC/AC inverters. It supports two-string PV systems and delivers dependable arc suppression for enhanced operational safety.
Supplied in a robust IP67-rated thermoplastic enclosure, the SI16-PEL64R-4 offers excellent protection against dust, water and harsh outdoor conditions. The lockable rotary handle incorporates IMO's Safelock function, allowing the switch to be secured in the OFF position during maintenance to prevent accidental reconnection.
Featuring a high-speed trigger mechanism, knife-edge contacts and integrated arc cooling chambers, the SI16-PEL64R-4 rapidly extinguishes DC arcs, making it ideal for residential, commercial and industrial solar PV systems requiring safe DC isolation.
Unlike conventional AC switches, the IMO SI16-PEL64R-4 has been engineered specifically for switching direct current generated by photovoltaic arrays. Its spring-assisted operating mechanism rapidly opens the contacts while integrated arc cooling chambers extinguish the DC arc within milliseconds, helping maximise both safety and switch longevity.
The compact enclosure, weatherproof construction and lockable operating handle make the isolator suitable for rooftop solar installations, commercial PV systems, battery storage applications and inverter isolation points requiring reliable long-term performance.
| Current | 16 A |
|---|---|
| Voltage | 900 V |
| Phase | Three Phase |
| IP Rating | IP67 |
| HS Code | 8536508000 |
| Country of Manufacture | Austria |
The SI16-PEL64R-4 is used to safely isolate DC circuits between photovoltaic solar panels and inverters during maintenance or emergency shutdowns.
Yes. The SI16 Series has been specifically designed for DC switching and is not an AC switch adapted for DC use.
This model is configured for two photovoltaic strings using a four-pole switching arrangement.
Yes. Its IP67-rated enclosure provides excellent protection against dust and water, making it suitable for external installation when correctly fitted.
Yes. The integrated Safelock rotary handle can be padlocked in the OFF position during servicing and maintenance.
IMO DC isolators are trusted by solar installers, renewable energy contractors and electrical engineers for their purpose-built DC switching technology, rapid arc suppression and dependable long-term performance in photovoltaic installations.{ "@context": "https://schema.org", "@type": "Product", "name": "IMO SI16-PEL64R-4 DC Isolator 16A 4 Pole IP67", "sku": "SI16-PEL64R-4", "mpn": "SI16-PEL64R-4", "brand": { "@type": "Brand", "name": "IMO" }, "category": "Solar DC Isolator", "description": "IMO SI16-PEL64R-4 true DC isolator with 16 A rating, four-pole switching, IP67 enclosure and lockable rotary handle for two-string photovoltaic installations.", "additionalProperty": [ { "@type": "PropertyValue", "name": "Rated current", "value": "16 A" }, { "@type": "PropertyValue", "name": "Maximum DC voltage", "value": "600 V DC" }, { "@type": "PropertyValue", "name": "Number of poles", "value": "4" }, { "@type": "PropertyValue", "name": "PV strings", "value": "2" }, { "@type": "PropertyValue", "name": "Protection rating", "value": "IP67" } ] } { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What is the IMO SI16-PEL64R-4 used for?", "acceptedAnswer": { "@type": "Answer", "text": "The SI16-PEL64R-4 safely isolates DC circuits between photovoltaic panels and solar inverters during maintenance or emergency shutdowns." } }, { "@type": "Question", "name": "Is this a true DC isolator?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. It is specifically engineered for DC switching rather than being an AC switch adapted for DC operation." } }, { "@type": "Question", "name": "How many PV strings does it support?", "acceptedAnswer": { "@type": "Answer", "text": "The SI16-PEL64R-4 supports two photovoltaic strings using a four-pole switching arrangement." } }, { "@type": "Question", "name": "Can it be installed outdoors?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The IP67 enclosure is suitable for indoor and outdoor installation when correctly installed." } }, { "@type": "Question", "name": "Can the switch be locked?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The Safelock rotary handle can be padlocked 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...