HOFFMAN A-20P20SS Stainless Steel Enclosure 508×508×152mm

The nVent HOFFMAN A-20P20SS is a large-format 316L stainless steel NEMA 4X / IP66 wall-mount enclosure measuring 508 mm × 508 mm × 152 mm (20" × 20" × 6"), providing the internal volume needed to house multi-channel instrument loop panels, distributed I/O assemblies, motor starter groups, and PLC sub-systems in a single corrosion-resistant field enclosure. Like its smaller A-16P16SS sibling, the A-20P20SS is fabricated from 316L austenitic stainless steel and carries a 2000-hour salt-spray rating per ASTM B117, and both NEMA 4X and IP66 ratings — making it one of the few large-format stainless enclosures on the market with independently certified salt-spray performance meeting Saudi Aramco and SABIC coastal installation specifications. The larger internal dimensions accommodate a full-height back panel capable of mounting up to four 35 mm DIN rails with standard 75 mm pitch, supporting up to 48 terminal blocks or 24 DIN-rail mounted devices on a standard 6 mm pitch terminal arrangement.

In Saudi Arabia's major industrial developments, the A-20P20SS fills the gap between small junction boxes and full-size floor-standing panels, serving as the standard field enclosure for local control stations, instrument marshalling panels, and MCC auxiliary panels in environments where corrosion resistance is mandatory. Saudi Aramco's gas compression stations, which handle high-pressure wet sour gas in humid Eastern Province conditions, require instrument marshalling panels with NEMA 4X stainless construction to prevent the enclosure body itself from introducing contamination or corrosion products into signal wiring. The A-20P20SS's internal volume accommodates the full DCS I/O marshalling for a typical 10–15 instrument loop field station — barrier strips, surge arresters, and cable ferruling — within a single field-mounted enclosure, reducing multi-box installation complexity and the associated cable gland count.

SABIC's ongoing Jubail II expansion projects and Saudi Aramco's Master Gas System Phase III pipeline network are current users of HOFFMAN A-20P20SS enclosures for field-mounted RTU and supervisory control interface boxes. The enclosure's modular hinge system allows the door to be lifted off for DIN rail installation and wiring without special tools, significantly reducing on-site assembly time for panel builders working in confined outdoor equipment bays. For NEOM's smart city utility network — where thousands of field-mounted IoT edge controllers and sensor fusion nodes are installed across The Line and Sindalah island — the HOFFMAN A-20P20SS provides the physically robust, permanently corrosion-resistant housing that NEOM's 100-year infrastructure design life expectation demands.

Razz Middle East stocks the A-20P20SS as part of our comprehensive HOFFMAN enclosure catalogue, including full accessory kits: stainless back panels pre-drilled to standard DIN pitch, foam-lined inner doors for laptop or HMI panel mounting, transparent window door inserts, padlocking latch kits, and thermoset GRP-bodied equivalent enclosures for the most demanding chemical exposure environments. We configure, drill, and assemble HOFFMAN enclosures to customer specifications at our Riyadh facility, delivering fully assembled and documented instrument panels ready for site installation to reduce on-site electrical contractor labour costs.