Panduit RGRB19CN 19RU Grounding Busbar Kit

Panduit RGRB19CN StructuredGround™ Grounding Busbar Kit

The Panduit RGRB19CN delivers a UL 467 and CSA C22.2 No 41-13 listed common grounding point for 19" EIA-310-D racks and cabinets in telecom rooms, data centers, and network equipment closets. Pre-assembled with twenty #12-24 × 1/2" hex head screws, two cage nut bonding studs, and four #12-24 bonding nuts, this busbar eliminates field assembly time and ensures consistent torque values across all terminations. The kit addresses the core challenge integrators face when trying to meet NEC Article 250 bonding requirements while maintaining clean, inspector-ready rack installations.

Key Features

• UL 467 and CSA C22.2 No 41-13 listed busbar for US and international grounding code compliance
• Pre-installed twenty #12-24 × 1/2" hex head screws eliminate field assembly and hardware sourcing
• EIA-310-D mounting hole pattern with 5/8" (15.9mm) spacing fits standard 19" racks without modification
• Includes two cage nut bonding studs and four #12-24 bonding nuts for equipment jumper terminations
• 1" (25mm) width provides adequate surface area for multiple termination points without rack space waste
• StructuredGround™ engineered design ensures mechanical and electrical integrity under repeated termination cycles

Grounding busbar placement in network racks is governed by NEC Article 250 and TIA-607-B bonding and grounding standards, which require a dedicated, listed grounding point accessible for equipment bonding jumpers. The RGRB19CN satisfies both requirements while addressing the practical installation challenges that arise in dense rack environments. The 5/8" mounting hole spacing aligns with EIA-310-D vertical rail patterns, allowing the busbar to mount directly to cabinet uprights without drilling or custom brackets. The pre-installed #12-24 hex head screws provide star-washer bite-through for reliable metal-to-metal contact, eliminating the oxidation layer that can develop on painted or anodized rack surfaces. This is critical in low-voltage DC systems where a few milliohms of contact resistance can cause ground loop noise or intermittent equipment resets. The two cage nut bonding studs accept #6 through #2 AWG equipment bonding jumpers, supporting both copper and aluminum conductors per UL 467 torque specifications.

Field deployment of the RGRB19CN typically occurs during the rough-in phase, immediately after rack installation and before cable tray or ladder rack bonding. Because the busbar ships fully assembled, installers can mount it in under two minutes per rack, compared to the 10-15 minutes required to hand-assemble field-fabricated busbars from copper bar stock and hardware store fasteners. This time savings compounds across large deployments: a 50-rack data center buildout reduces grounding busbar installation labor by approximately 10 hours, while ensuring every termination meets the same UL-tested mechanical and electrical performance. The 1" width accommodates up to eight equipment bonding jumpers without stacking lugs, which is essential in racks hosting blade servers, SAN switches, or high-density patch panels where each device requires a dedicated bonding path. The four included #12-24 bonding nuts provide spares for future equipment additions without requiring a return trip for hardware procurement.

The RGRB19CN's UL 467 and CSA C22.2 No 41-13 listings ensure the assembly has passed fault-current withstand testing, verifying the busbar, fasteners, and termination hardware will not fail under the magnetic forces generated during a short-circuit event. This is non-negotiable in mission-critical facilities where AHJ sign-off depends on listed components throughout the grounding system. The StructuredGround™ design also addresses the thermal expansion mismatch between copper busbars and steel rack rails, using fastener patterns and material thicknesses that maintain clamping force across the -40°C to +70°C temperature range typical in HVAC-controlled telecom spaces. For integrators working under TIA-942 or Uptime Institute Tier III/IV certification requirements, the RGRB19CN provides the documented compliance trail and mechanical reliability that auditors expect from engineered grounding infrastructure.