Panduit A2/0-38RH-C 2/0 AWG Compression Lug 100pk

Panduit A2/0-38RH-C 2/0 AWG Compression Lug, 3/8" Stud, Tin-Plated Copper, 45°, 100-Pack

The Panduit A2/0-38RH-C Pan-Lug compression lug delivers UL-listed performance for 2/0 AWG battery cable terminations in backup power systems, UPS installations, and DC distribution assemblies. Tin-plated copper barrel construction provides ASTM Class C corrosion resistance in moisture-prone equipment rooms and outdoor enclosures. The 45° bend positions the 3/8" stud parallel to battery posts and bus bars without cable stress, critical when routing heavy-gauge conductors in tight cabinet spaces. Solid barrel design (no inspection window) prevents contaminant ingress in dusty telecom shelters and industrial environments where particulate exposure degrades connection integrity over multi-year service life.

Key Features

• 2/0 AWG barrel accepts stranded copper conductors for 105 kcmil battery cable assemblies
• Tin-plated finish meets ASTM B545 Class C specification — 200+ hours salt-spray resistance per ASTM B117
• cULus Listed to UL 486A-486B for power distribution up to 600V, compliant in US and Canadian electrical installations
• 45° bend aligns stud axis with battery terminals and distribution blocks without torquing cable jacket
• Flared barrel entry guides 19-strand and 37-strand flex conductors during insertion, reducing installer setup time
• Military-grade pull-out strength when crimped with Panduit MD6-R14 or CT-920 compression tooling
• Solid barrel construction (no window) prevents moisture and dust entry in below-grade vaults and outdoor cabinets
• 100-piece contractor pack supports medium-scale UPS retrofits and data center battery string builds

Application Engineering: This compression lug terminates 2/0 AWG (67.4 mm² / 105 kcmil equivalent) copper conductors to 3/8" threaded studs on VRLA batteries, inverter bus bars, and transfer switch neutrals. The 45° bend is essential in vertical battery rack assemblies where cables drop from overhead ladder rack — the angled stud allows horizontal bolt engagement without inducing torsional stress on the lug-to-cable interface. Tin plating (minimum 0.0003" thickness per ASTM B545) forms a solderable, low-resistance surface that resists galvanic corrosion when mated to brass or bronze bus hardware. Unlike bare copper lugs that oxidize to resistive copper oxide (increasing connection resistance 15–40% over 5 years in uncontrolled environments), tin-plated surfaces maintain <50 microhm contact resistance across thermal cycling and humidity exposure typical of unventilated battery cabinets.

Installation Requirements: Proper crimp die selection is non-negotiable — Panduit specifies the MD6-R14 indent-crimp die (6-point hex pattern, 1.06" crimp diameter) for hydraulic tools or the CT-920 compression tool for mechanical actuation. Under-crimping reduces contact area and allows conductor pullback under vibration; over-crimping work-hardens the copper barrel and creates stress risers that propagate cracks during thermal expansion cycles. The flared barrel entry (0.05" chamfer) accommodates the 0.414" nominal diameter of 2/0 AWG Class B stranded cable (19-wire construction) without snagging individual strands during insertion — critical when working overhead in cramped battery shelters where visual confirmation of full insertion is difficult. Strip length should be 0.75" to seat the conductor against the internal barrel shoulder; insufficient insertion leaves uncompressed barrel length that increases resistance and creates a heat concentration point during fault current events.

Code Compliance & Ratings: cULus Listing to UL 486A-486B (Connectors for Use with Aluminum and/or Copper Conductors) qualifies this lug for NEC Article 250 grounding electrode conductor terminations and Article 480 battery circuit connections in commercial and industrial occupancies. When installed per manufacturer torque specifications (3/8" hardware: 20–25 ft-lb for battery post applications, verify against battery manufacturer data), the joint meets NEC 110.14(C) temperature rating requirements for 75°C cable systems. Pull-out strength exceeds MIL-STD-975 requirements when crimped with Panduit tooling — the compression profile creates radial force that embeds the barrel into the conductor strands, forming a cold-weld joint that maintains >95% of the cable's rated tensile strength (2/0 AWG: ~4,000 lbf breaking strength). This retention performance is critical in seismically active regions where battery rack movement during aftershocks can dislodge poorly attached cables and interrupt backup power to life-safety systems.

Material & Environmental Performance: Tin plating (pure tin, not tin-lead solder) provides three protective mechanisms: galvanic barrier between dissimilar metals (copper lug to brass stud), solderable surface for ultrasonic or resistance welding in automated harness assembly, and ductile contact layer that conforms to mating surface micro-roughness under bolt compression. The solid barrel design eliminates the inspection window found in economy lugs — while windows allow visual confirmation of conductor insertion, they create a path for moisture ingress in unconditioned spaces. Battery rooms in below-grade parking structures and outdoor generator enclosures routinely see 80%+ humidity and occasional water intrusion from condensation or roof leaks; solid barrels prevent electrolyte creep (battery acid vapor condensing on copper surfaces) from propagating into the crimp zone and initiating corrosion that weakens the mechanical connection. The 1.99" overall length provides adequate spacing between the crimp barrel and the 3/8" stud to prevent cable jacket contact with energized hardware when bending radius is minimized in dense battery strings (48V systems: 24-cell series strings; 125V DC systems: 60-cell strings, etc.).

Contractor packaging (100-piece count) supports mid-scale projects: 50-cabinet UPS deployment (2 lugs per battery: positive and negative = 100 lugs for 50 single-battery cabinets), solar combiner box builds (multiple strings terminating to common bus), or DC distribution panel assembly in industrial control systems. Panduit part number structure denotes wire gauge (A2/0 = 2/0 AWG), stud size (38R = 3/8" ring terminal), bend angle (H = 45°), and material (C = tin-plated copper). When spec'ing replacement lugs or cross-referencing competitor SKUs (listed as 5956FV in legacy catalogs), verify stud hole diameter (0.406" nominal for 3/8" bolt clearance), barrel inner diameter (match to insulation OD of your cable — typically 0.528" for 2/0 AWG Type RHW-2 or DLO cable), and whether your application requires the 45° bend or straight-tongue variant (A2/0-38R-C, no "H" suffix).