Thomas Betts NS12126 Polycarbonate Enclosure 12x12x6 Nema 4X

Product Description

The THOMAS BETTS NS12126 is a standard polycarbonate electrical enclosure rated for NEMA 1, 2, 3, 3S, 3SX, 3X, 4, and 4X environments. It measures 12 inches wide, 12 inches high, and 6 inches deep, providing a mid-size housing for control components, junction wiring, or instrumentation. The polycarbonate construction delivers impact resistance and corrosion resistance suitable for demanding indoor and outdoor installations. A screw flat cover design with captive cover screws, integrated hinges, and swing panels allows straightforward access during service. Licensed electricians and control panel builders are the primary installers. The enclosure carries cULus Listed certification under E88685 and UL Listed 50, meeting common code requirements for electrical containment.

This enclosure is suited for residential, light commercial, and industrial applications where protection from dust, water, and environmental exposure is required. NEMA 4X rating makes it appropriate for washdown environments and corrosive locations where a metal enclosure would be subject to rust or chemical attack. Typical deployment includes outdoor control panels, pump station junction boxes, irrigation controllers, and HVAC equipment control enclosures. Its mid-size footprint accommodates standard DIN rail subpanels or terminal block assemblies. The clear or opaque polycarbonate body is a common choice where component visibility or weight savings is a factor compared to steel alternatives.

Key Features

• NEMA 1, 2, 3, 3S, 3SX, 3X, 4, and 4X multi-rating covers a wide range of indoor and outdoor applications
• Polycarbonate construction provides impact resistance and eliminates corrosion risk
• Screw flat cover with captive cover screws prevents hardware loss during field service
• Integrated hinges and swing panels allow full-access panel opening without removing the cover entirely
• cULus Listed under E88685 and UL Listed 50 for code-compliant installations
• Lightweight design at 7 pounds reduces mounting hardware stress compared to equivalent steel enclosures

Compatibility

Designed as an OEM-style standard electrical enclosure suitable for use with DIN rail assemblies, terminal blocks, and control components requiring NEMA 4X-rated housing in a 12 inches x 12 inches x 6 inches footprint.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NEC Article 312 and applicable local codes governing electrical enclosure mounting and wiring. De-energize all circuits before opening or working inside the enclosure. Verify that all conduit entries and knockouts are properly sealed with listed fittings to maintain the NEMA rating after installation. Do not overtighten captive cover screws beyond hand-tight plus the manufacturer-specified turn, and inspect the gasket seal on each service visit to confirm NEMA 4X integrity is maintained.