Industrial ST250AL Liquidtight Conduit Connector

Description:

The Appleton ST250AL Liquidtight Straight Conduit Connector is used to securely terminate 2-1/2-inch liquidtight flexible metallic conduit (LFMC) or liquidtight flexible nonmetallic conduit (LFNC) to electrical enclosures while providing a liquidtight seal and continuous grounding path. Commonly installed in industrial machinery, manufacturing plants, wastewater treatment facilities, HVAC systems, and outdoor electrical installations, this connector features a lightweight copper-free aluminum construction with an external grounding lug for superior corrosion resistance and dependable performance in harsh environments. Electricians, maintenance technicians, and industrial contractors use this connector for new installations, equipment upgrades, repairs, and replacement of liquidtight conduit terminations.

Applications:

The Appleton ST250AL is designed to terminate 2-1/2-inch liquidtight flexible conduit to junction boxes, control panels, switchgear, and electrical enclosures while preventing the ingress of water, oil, dust, dirt, and fumes. Its corrosion-resistant aluminum construction and external grounding lug make it ideal for industrial automation, OEM equipment, motor terminations, robotics, HVAC systems, marine applications, and hazardous locations requiring reliable liquidtight conduit connections.

Technical Specifications:

• Manufacturer Part Number (MPN): ST250AL
• Brand: Appleton (Emerson)
• Product Type: Straight Liquidtight Conduit Connector
• Trade Size: 2-1/2 in.
• Conduit Compatibility: Liquidtight Flexible Metallic Conduit (LFMC) and Liquidtight Flexible Nonmetallic Conduit (LFNC)
• Connection Type: Threaded × Compression
• Orientation: Straight
• Thread Size: 2-1/2 in. – 8 NPT
• Material: Copper-Free Aluminum
• Finish: Zinc Electroplated
• Throat Type: Plain (Non-Insulated)
• Grounding: External Grounding Lug Included
• Environmental Rating: Liquidtight, Raintight, Oiltight, Concretetight; Suitable for Wet Locations
• Features: Long ferrule exceeding UL pull-out requirements, positive metal-to-metal grounding, corrosion-resistant construction, compact design, seals against oil, water, dust, dirt, and fumes
• Standards: UL 514B Listed (File E14814), CSA C22.2 No. 18.3 Certified, NEMA FB-1, Suitable for Class I Division 2, Class II Divisions 1 & 2, and Class III hazardous locations
• Dimensions: 3.38 in. Length × 3.94 in. Width; Thread Length: 1.06 in.

Common Replacements:

• Appleton ST250
• Appleton STB250AL
• Appleton STB250