NVENT HOFFMAN PLCS1X2 Leak comp., ext., X (230VAC)

Why Choose the nVent HOFFMAN PLCS1X2 Leak Compensation Purge and Pressurization System?

The nVent HOFFMAN PLCS1X2 is a Type X leak compensation purge and pressurization system designed for exterior mounting on electrical enclosures installed in hazardous locations. Operating with a 230 V AC electrical interface, the system helps protect general-purpose electrical and electronic equipment by establishing and maintaining positive pressure inside the enclosure.

The PLCS1X2 initially purges the protected enclosure with clean air or inert gas to remove potentially hazardous gases or dust before maintaining positive internal pressure through leak compensation. The system consists of a control unit and relief valve, with an automatic purge cycle, rapid purge valve, visual purge status indication and local system-status indication. Type X operation also provides power disconnection when adequate pressurisation is lost or has not been established.

Designed for enclosures with a volume of typically 60 ft³ or less, the PLCS1X2 uses a dry, clean protective air or inert gas supply between 60–115 psi (4–8 bar). Exterior components are manufactured from 316L stainless steel or corrosion-resistant composite materials, while the system operates across an ambient temperature range of -20 to +55 °C, making it suitable for demanding industrial hazardous-area applications.

Key Advantages

• Type X purge and pressurization for hazardous-location enclosure protection.
• Leak compensation operation automatically compensates for pressure losses.
• 230 V AC electrical interface.
• Automatic purge cycle simplifies enclosure purging before equipment energisation.
• Provides power disconnection if adequate enclosure pressurisation is lost or not attained.
• Rapid purge valve and visual purge-status indicator support safe operation.
• Local visual system-status indication provides convenient operating feedback.
• Designed for exterior mounting on the protected enclosure.

Key Features

• nVent HOFFMAN HLP purge and pressurization system.
• Leak Compensation operating method.
• Type X protection system.
• 230 V AC coil / electrical interface.
• Exterior-mounted configuration.
• Automatic purge process.
• Rapid purge valve.
• Visual purge-status indicator.
• Local visual alarm / system-status indication.
• Dry contact output for remote alarm indication.
• 4PNO / 20 A / 440 V AC power contactor.
• Protective gas supply pressure of 60–115 psi (4–8 bar).
• Typically recommended for enclosure volumes up to 60 ft³.
• Exterior components manufactured from 316 stainless steel or corrosion-resistant composite.

Purge and Pressurization for Hazardous Locations

Purge and pressurization provides a practical method of protecting electrical equipment installed in hazardous locations. Before equipment is energised, the enclosure is purged to remove potentially explosive gases or dust and is then maintained at a positive internal pressure using clean air or an inert protective gas. This positive pressure helps prevent the surrounding hazardous atmosphere from entering the enclosure.

The nVent HOFFMAN PLCS1X2 uses the leak compensation method to maintain the required positive pressure by replacing gas lost through normal enclosure leakage. Its Type X configuration incorporates an automatic purge process and power-disconnection functionality, helping enable general-purpose electrical equipment to be installed within an appropriately integrated and certified pressurised enclosure system.

Typical Applications

• Hazardous-location electrical enclosures.
• Oil and gas processing installations.
• Petrochemical and chemical processing equipment.
• Industrial control and automation panels.
• Process instrumentation systems.
• Electrical enclosures containing general-purpose equipment in hazardous areas.
• Manufacturing and processing plants with potentially explosive atmospheres.
• Industrial applications requiring Type X purge and pressurization protection.