This article covers the Friedrich SH24N30AT 60 Hz hazardous-location air conditioner in full: certifications, technical specifications, construction details, and how to source the unit in the UK from the only authorised supplier stocking the complete Hazardgard range.
Friedrich Hazardgard air conditioner for hazardous locations
The Friedrich SH24N30AT is a current-generation hazardous location air conditioner released in 2022, designed for facilities where flammable gases or vapours may be present. ATEX Online stocks this 60 Hz configuration and provides sourcing, quotations, worldwide delivery and customs support. Current pricing and lead times are available through the Friedrich ATEX SH24N30AT air conditioner product page.
SH24N30AT capacity and operating range
The Friedrich Hazardgard room air conditioner delivers a rated cooling capacity of 24,000 Btu/hr from a 230/208 V, 60 Hz electrical supply. A hot-gas bypass system extends the operating window, allowing reliable cooling in outdoor temperatures as low as 7°C (45°F) without coil-freeze risk, up to a maximum ambient of 55°C (130°F).
This range matters on sites exposed to severe seasonal variation. The Hazardgard model uses a hermetically sealed reciprocating compressor, cooled during each refrigerant cycle, to support sustained performance at both limits while maintaining arc-free containment inside the hazardous zone.
ATEX and Zone 2 suitability
Compliance starts with the ATEX certification: the SH24N30AT carries the marking II 3 G Ex nA nC IIC T4 Gc, confirming suitability for Zone 2 gas atmospheres, including gas group IIC. The Friedrich ATEX model SH24N30AT also carries ATEX and IECEx certification, an essential combination when specifying explosion-proof HVAC for hazardous areas under European and international requirements.
For sites operating under North American codes, the UL listing covers Class 1, Division 2, Groups A, B, C and D, with references to ANSI/UL 484, ISA 12.12.01 and NFPA 70. Download the official EU Declaration of Conformity and the Atex Certificate for inclusion in the site documentation pack.
- Temperature classification T4 rating confirms that the surface temperature does not exceed 135°C under normal operating conditions, helping prevent ignition of T4-class gases.
- IECEx certification Ex nA nC IIC T4 Gc provides internationally certified recognition of suitability for explosive atmospheres and supports global project approvals.
- UL listing scope Certified to Class 1, Division 2, Groups A, B, C and D under ISA 12.12.01 and NFPA 70, covering a broad range of North American hazardous-location classifications.
The Friedrich ATEX model SH24N30AT meets the documentation requirements commonly applied to offshore oil rigs, petrochemical refineries, chemical processing plants and pharmaceutical manufacturing environments. The ATEX Online ATEX SH24N30AT air conditioner category shows the certified Hazardgard range held in stock. For the series’ engineering background and specifications, consult the Hazardgard SH24N20AT specifications brochure.
Hazardgard construction for demanding sites
The steel air conditioner cabinet is fabricated from 22-gauge G60 steel with a powder-coated finish. Evaporator and condenser coil fins are 33% thicker than those used in standard units, extending service life in aggressive atmospheres where access for replacement is limited.
Key electrical components are environmentally sealed. The on/off switch is protected against ingress by hazardous substances, while gold-plated thermostat contacts maintain corrosion resistance in chemically active conditions.
Solid-state control relays for the compressor and fan sit in a dedicated steel enclosure. A commercial-grade enclosed fan motor with sealed overload protection completes the arc-free design. The Friedrich Hazardgard room air is designed to withstand MIL-STD 810F sand and dust exposure and a 2,000-hour salt spray test under ASTM B117-G85.
UK pricing, manuals and supply
ATEX Online is the number one and only UK source for the friedrich sh24n30at and the complete Friedrich Hazardgard range. The product page for the SH24N30AT hazardous location unit carries current pricing, while formal quotations, customs documentation and worldwide delivery coordination are available on request.
Installation documentation and service manuals are available with the product listing. A 360° interactive view is provided through Click here to view! the product viewer, which allows rotation and zoom across every panel.
Installation requires a 250-volt, 30-amp breaker or time-delay fuse. Direct-wire connection applies, with no plug supplied; hardwiring into the site electrical system is therefore mandatory before commissioning.
Frequently Asked Questions
What cooling capacity and electrical supply does the Friedrich SH24N30AT require?
The Friedrich SH24N30AT provides 24,000 Btu/hr of cooling from a 230/208 V, 60 Hz electrical supply. Installation requires a 250-volt, 30-amp breaker or time-delay fuse to accommodate compressor surge current during start-up. The unit is hard-wired rather than supplied with a plug, so a qualified electrician must connect it to the site electrical system before commissioning.
Its hot-gas bypass system keeps the air conditioner operating in ambient conditions down to 7°C (45°F). This extends the usable season without additional controls.
Is the Friedrich Hazardgard SH24N30AT certified for Zone 2 and ATEX environments?
The Friedrich Hazardgard room air conditioner SH24N30AT is ATEX-certified to II 3 G Ex nA nC IIC T4 Gc, confirming its suitability for Zone 2 gas environments, including IIC atmospheres. IECEx certification, Ex nA nC IIC T4 Gc, provides equivalent international recognition.
Its temperature classification is T4: the maximum surface temperature remains below 135°C under normal operating conditions. UL listing also covers Class 1, Division 2, Groups A, B, C and D, supporting projects governed by North American codes. The rating therefore addresses several hazardous electrical installation frameworks.
Where can the SH24N30AT be purchased in the UK?
ATEX Online is the UK supplier of the Friedrich SH24N30AT and every Friedrich Hazardgard model currently in production. The unit is stocked in its 60 Hz configuration and available with worldwide delivery, customs support and formal quotation documentation.
For hazardous environments, direct supply through ATEX Online preserves the complete certification record across ATEX, IECEx and UL requirements. Contact the team for site-specific pricing, lead times or technical support before specifying the unit for a new installation.