Panduit A1-56R-C 1 AWG 5/16" Stud Compression Lug

The Panduit A1-56R-C Pan-Lug™ compression lug delivers reliable, code-compliant terminations for 1 AWG battery cables and power feeders in UPS installations, battery racks, DC power systems, and backup power circuits. Designed for commercial integrators who need consistent pullout strength and verifiable compliance, this tin-plated copper lug is cULus listed to UL 486A-486B and meets US Military wire pullout specifications. The 5/16" stud size fits standard power distribution blocks, inverter terminals, and battery posts across brands. Sold in 100-piece packages for multi-rack deployments.

Key Features

cULus Listed for Power Applications: Certified to UL 486A-486B for use in the United States and Canada, meeting NEC Article 110.3(B) listing requirements for inspected installations.

Tin-Plated Copper Construction: High-conductivity copper barrel with tin plating resists oxidation and maintains low contact resistance in high-current battery and DC power circuits.

Flared Entry for Wire Insertion: Beveled barrel opening guides stripped 1 AWG conductors into the compression zone without fraying strands, reducing install time and rejected crimps.

Embossed Wire Size Marking: Permanent barrel stamp identifies the 1 AWG wire range, preventing mismatched terminations during multi-gauge installations or service calls.

High Pullout Strength: Compression barrel design exceeds US Military pullout specifications, holding conductors secure under vibration, thermal cycling, and fault-current events in battery backup systems.

5/16" Stud Compatibility: Standard stud diameter mates with common battery terminals, inverter lugs, and distribution blocks from APC, Eaton, Schneider Electric, and other UPS/power brands.

Battery backup and power distribution installations demand terminations that won't fail under load or inspection. The A1-56R-C addresses three deployment challenges: code compliance (cULus listing satisfies AHJ requirements), field reliability (tin plating prevents the galvanic corrosion that causes voltage drop in mixed-metal connections), and installation consistency (embossed wire size and flared entry reduce the error rate when multiple techs are crimping hundreds of terminations across a datacenter or industrial facility). The 1.96" overall length provides clearance in tight battery enclosures while keeping the lug profile low enough for rack-mount inverter terminal blocks.

Use Panduit CT-920 or CT-2040L compression tools (6-ton minimum) with Panduit 1 AWG dies for proper barrel compression. Over-crimping fractures strands; under-crimping allows pullout. The embossed wire size acts as a visual QC check before energizing circuits. In multi-battery strings (common in 48VDC telecom or 125VDC utility substations), consistent crimp quality across all interconnects prevents the single weak termination that causes string imbalance or thermal runaway. Pack quantities of 100 match the lug count for typical 20-battery 48V strings (40 lugs) or 10-rack UPS deployments with spares.

The A1-56R-C is cULus listed and meets US Military wire pullout specifications, making it suitable for federal installations, military facilities, and any project requiring certified components. Tin plating over copper provides the corrosion resistance needed in high-humidity telecom shelters, coastal battery rooms, and industrial plants without the cost premium of stainless hardware. For integrators installing Eaton 9395 UPS systems, APC Symmetra battery cabinets, or custom 48VDC power plants, this lug offers the balance of compliance, durability, and field-proven performance that keeps backup power online when the grid fails.