Side-mount electrical cabinet air conditioner Model NHP4840

compactindustrialdust-resistant

Overview
Non-Hazardous Purge (NHP) NEMA 4 Cabinet Cooler® systems provide a slight positive pressure inside electrical enclosures to prevent contaminants from entering through small openings. Thermostat-controlled units activate cooling only when internal temperature approaches the setpoint (factory set at 95°F / 35°C), reducing compressed air use. Cabinet Coolers use a vortex tube to create cold air from compressed air with no moving parts and install quickly through a standard electrical knockout. NEMA 4 (IP66) models are dust-tight, oil-tight and splash-resistant for indoor/outdoor service.

Applications

• Programmable controllers
• Line control cabinets
• Motor control centers
• Relay panels
• NC/CNC systems
• Modular control centers
• CCTV cameras
• Computer cabinets
• Laser housings
• Electronic scales

Advantages

• Low initial cost and simple installation
• Compact, mounts in standard electrical knockout
• Cooling capacities from 275 to 5,600 Btu/hr (80 to 1,641 W)
• Thermostat control reduces air consumption
• Quiet operation — no rotating parts
• Maintains NEMA 4 (IP66) enclosure integrity
• Stabilizes internal temperature and humidity
• No CFCs; no moving parts — minimal maintenance
• Prevents nuisance tripping and heat-related failures
• Eliminates need for room air conditioning, fans and filters
• Provides washdown protection for enclosures

Models (NEMA 4 Non-Hazardous Purge, Thermostat Control — 120V)
Model — Btu/hr. (Watts)
NHP4804 — 275 (80)
NHP4808 — 550 (162)
NHP4815 — 1,000 (293)
NHP4825 — 1,700 (498)
NHP4830 — 2,000 (586)
NHP4840 — 2,800 (821)
NHP4850 — 3,400 (997)
NHP4860 — 4,000 (1,171)
NHP4870 — 4,800 (1,406)
NHP4880 — 5,600 (1,641)

Models (NEMA 4 Non-Hazardous Purge, Thermostat Control — 240V)
Model — Btu/hr. (Watts)
NHP4804-240 — 275 (80)
NHP4808-240 — 550 (162)
NHP4815-240 — 1,000 (293)
NHP4825-240 — 1,700 (498)
NHP4830-240 — 2,000 (586)
NHP4840-240 — 2,800 (821)
NHP4850-240 — 3,400 (997)
NHP4860-240 — 4,000 (1,171)
NHP4870-240 — 4,800 (1,406)
NHP4880-240 — 5,600 (1,641)

Performance (selected)
Selected performance (supply 100 PSIG / 6.9 BAR):
Model — Btu/hr — Watts — Sound level (dBA)
NHP4804 / NHP4804-240 — 275 — 80 — 59*
NHP4808 / NHP4808-240 — 550 — 162 — 67*
NHP4815 / NHP4815-240 — 1,000 — 293 — 73
NHP4825 / NHP4825-240 — 1,700 — 498 — 80
NHP4830 / NHP4830-240 — 2,000 — 586 — 80
NHP4840 / NHP4840-240 — 2,800 — 821 — 82
NHP4850 / NHP4850-240 — 3,400 — 997 — 84
NHP4860 / NHP4860-240 — 4,000 — 1,171 — 84
NHP4870 / NHP4870-240 — 4,800 — 1,406 — 84
NHP4880 / NHP4880-240 — 5,600 — 1,641 — 85
*With optional cold muffler installed.

Accessories
Side Mount Kits allow installation on the side of an enclosure when top clearance is limited. NEMA 4 and 4X Side Mount Kits preserve the enclosure rating and mount in a standard 1-1/2 NPS knockout. Side Mount Kits for NEMA 12 are aluminum; NEMA 4 and 4X kits are Type 303 or 316 stainless steel.

How it works
Compressed air enters a vortex tube within the Cabinet Cooler, splitting into hot and cold streams. Cold air is directed into the cabinet via a cold air distribution kit; hot air is muffled and exhausted. The system maintains slight positive pressure so external contaminants are kept out of the enclosure.

Other product information
Thermostat systems include the cooler, solenoid valve, thermostat (factory set at 95°F / 35°C, adjustable), filter separator and cold air distribution kit. Continuous systems include cooler, filter separator and distribution kit. Electronic Temperature Control (ETC) units provide digital regulation and internal temperature feedback. Cabinet Cooler systems include a 5 micron automatic drain water and dirt filter; use a coalescing filter if oil is present in the compressed air supply.

Technical specifications

• Series: NHP (Non-Hazardous Purge) — NEMA 4 (IP66)
• Cooling capacities: 275 to 5,600 Btu/hr (80 to 1,641 Watts)
• Thermostat: factory set at 95°F (35°C), adjustable
• Typical temperature drop: ~54°F (30°C) below supply air at 100 PSIG (6.9 BAR)
• Sound levels: approximately 59–85 dBA depending on model and options
• Construction: aluminum cooler body with stainless steel vortex tube
• Filtration: 5 micron automatic drain water and dirt filter included; coalescing filter recommended if oil present
• Controls: solenoid valves in multiple voltages; ETC digital controls available
• Mounting: installs through standard electrical knockout; side mount kits available
• No moving parts (vortex tube) — minimal maintenance
• Certifications: UL Listed and CE compliant
• Provides continuous positive purge to prevent ingress of contaminants