Panduit EV10-56RB-Q StrongHold™ Ring Terminal

The Panduit EV10-56RB-Q is a vinyl-insulated ring terminal from the StrongHold™ Contractor Grade line, engineered for 12-10 AWG conductors and 5/16" stud applications. Field installers working on battery bank interconnects, UPS installations, grounding assemblies, and power distribution panels rely on this terminal for code-compliant, vibration-resistant terminations in access control, security, and low-voltage systems. The funnel-entry barrel accommodates stranded copper conductors without pre-twisting, and the tin-plated brass construction ensures reliable conductivity in both indoor and temperature-cycling environments typical of telecom closets, equipment racks, and outdoor enclosures.

Key Features

• 12-10 AWG wire range with 5/16" stud hole — compatible with standard battery terminal posts, breaker lugs, and grounding bars
• Vinyl insulation rated UL 587 H — withstands 221°F (105°C) continuous operating temperature
• Tin-plated copper barrel and tongue — corrosion resistance for long-term contact integrity in HVAC-controlled and semi-exposed environments
• Funnel-entry design — easier wire insertion under field conditions compared to straight-barrel designs
• UL Listed 587H (E52164) and CSA Certified (LR31212) — meets NEC Article 110.3(B) equipment installation requirements
• Compatible with Panduit CT-100A, CT-200, CT-600-A, CT-1570, CT-1701, CT-2500, CT-160, and CT-256 crimp tools — consistent F-crimp or hex-crimp profiles per tool type
• 25-piece contractor pack with 250-piece carton availability — ideal for stocking service vehicles or large installation runs

The EV10-56RB-Q uses a seamless brass barrel with electro-tin plating over the entire contact surface, including the stud-hole ring tongue. This construction provides <5 milliohm contact resistance when properly crimped, critical for battery strings and DC power buses where voltage drop accumulates across multiple terminations. The vinyl insulation sleeve extends to within 0.1" of the stud hole, providing touch-safe coverage that meets NFPA 70 working-space requirements in energized panels. The insulation color (red, per Panduit's color-coding for 12-10 AWG) allows quick visual verification of wire gauge during inspections or troubleshooting—especially valuable in mixed-gauge installations like intrusion panel auxiliary power wiring or multi-voltage distribution blocks.

Installers use the EV10-56RB-Q in three common scenarios: Battery interconnects for UPS and access control backup power (typically 12 VDC or 24 VDC systems), where the 5/16" stud matches standard sealed lead-acid and lithium-ion battery terminal posts. Grounding and bonding connections in equipment racks and enclosures, where NEC 250.8 requires listed pressure-connector devices for grounding-electrode conductors and equipment-bonding jumpers. Control circuit terminations in fire alarm, intrusion, and door control panels, where the insulated barrel prevents accidental shorts in densely packed terminal strips. The terminal's 1.23" overall length and 0.52" width fit within the tight clearances of modern DIN-rail terminal blocks and compact power supplies common in PoE midspan injectors and 12 VDC distribution hubs. Crimping with Panduit's CT-series tools produces a gas-tight cold-weld joint with >90% tensile strength of the base conductor—critical for installations subject to thermal cycling (such as outdoor equipment cabinets) or mechanical vibration (such as elevator machine rooms or rooftop equipment).

UL 587 H flammability rating qualifies the EV10-56RB-Q for use in plenum-adjacent electrical spaces and above suspended ceilings in commercial buildings, where fire-spread limitations apply per NEC 300.22. CSA certification extends the same compliance to Canadian installations under CEC Part I. The terminal is RoHS-compliant and compatible with lead-free soldering processes if secondary bonding is required, though the crimp-only connection is the field-standard installation method. For integrators managing bill-of-materials across access control, intrusion, and IP camera infrastructure, the EV10-56RB-Q provides a stocked, code-approved termination solution that eliminates the guesswork and liability risk of using unmarked or uncertified terminals from general hardware suppliers.