7400UST-APTN

Overview

The Appleton 7400UST-APTN is a heavy-duty, explosion-proof receptacle designed for hazardous locations. It features a 3-pole, 4-wire configuration with a NEMA L5-30R locking interface, rated for 30 amperes and 250 volts. The unit utilizes a robust thermoplastic housing constructed from UV-resistant materials to withstand harsh environmental conditions. It includes a hinged cover mechanism that ensures the contacts remain sealed when not in use, providing protection against dust, moisture, and corrosive agents. This component is engineered to meet stringent safety standards for industrial environments where flammable gases or vapors may be present.

Feature Summary

• Explosion-proof construction certified for hazardous area classification
• Locking NEMA L5-30R interface prevents accidental disconnection under load
• Hinged cover design maintains environmental sealing integrity
• UV-stabilized thermoplastic body resists degradation from sunlight exposure

Applications

• Oil and gas drilling operations
• Chemical processing plants
• Petroleum refining facilities
• Marine and offshore platforms

Procurement Notes

Verify that the installation environment matches the specific hazardous location class and division ratings specified in the official Appleton certification documents. Ensure compatibility with existing conduit fittings and grounding requirements before procurement. Confirm that the voltage and current ratings align with the circuit design specifications to prevent operational hazards.

Selection Notes

Select this model only when a 30-ampere, 250-volt locking receptacle is required for Class I, Division 1 or 2 hazardous locations. Consider the NEMA L5-30R plug compatibility with downstream equipment. Evaluate the need for the hinged cover feature versus fixed covers based on maintenance frequency and environmental exposure levels in the specific application site.

Part Context

Appleton is a brand known for electrical components used in demanding industrial settings. The 7400 series represents a line of heavy-duty receptacles designed for durability and safety in explosive atmospheres. This specific model integrates standard locking mechanisms with specialized housing materials to ensure long-term reliability in corrosive or wet environments common in heavy industry.

Replacement Considerations

Direct replacements must match the NEMA L5-30R configuration and hazardous location certifications. Verify that any substitute part meets the same UL or CSA listing requirements for the intended Class and Division. Physical dimensions and mounting hole patterns should be checked to ensure fitment within existing enclosures or panels.