Panduit CCALTR3135-X Aluminum Trefoil Cable Cleat
The Panduit CCALTR3135-X delivers IEC 61914:2015-certified short circuit protection for three-cable trefoil runs in datacenter, industrial, and commercial power distribution environments. Rated to 114kA peak fault current, this aluminum cleat mechanically retains 31-35mm (1.22-1.38") diameter cables during fault events—preventing whip damage to adjacent infrastructure, cable trays, and personnel. Ships in 10-packs for medium-voltage feeder installations where galvanic corrosion risk is moderate and aluminum's weight-to-strength ratio offers installation efficiency over stainless steel.
Key Features
- IEC 61914:2015 certified to 114kA peak short circuit fault current
- Trefoil clamp configuration for three-cable triangular arrangement (31-35mm cable OD)
- Aluminum construction for corrosion resistance and reduced installed weight
- Direct cable tray rung mounting via M8 bolt hole (hardware user-supplied)
- Sold as 10-pack for multi-run feeder and busway installations
- Compatible with optional insulating spacers to prevent galvanic corrosion between dissimilar metals
IEC 61914:2015 certification confirms this cleat meets international short circuit withstand testing—critical for AHJ acceptance in datacenters, industrial facilities, and grid-tied renewable installations. The 114kA peak rating covers fault currents typical of 480V/600V medium-voltage distribution systems fed by 1000-2500kVA transformers. During a fault, electromagnetic forces generate cable whip velocities exceeding 10 m/s; the TR-series clamp's saddle geometry and M8 mounting bolt retain cables within the tray structure rather than allowing destructive lateral movement. Each cleat installs directly to standard cable tray rungs with an 8mm bolt (supplied by installer per local fastener specs), and the 116mm overall height accommodates trefoil spacing requirements for NEC 310.15(B)(3)(a) ampacity derating calculations.
Trefoil configuration places three single-conductor cables in a triangular footprint—reducing magnetic field imbalance and improving current-carrying capacity compared to flat or random-lay arrangements. This cleat's 31-35mm cable diameter range covers common 250-500 kcmil conductors in XLPE or EPR insulation, typical for 400-800A feeder circuits. Aluminum construction provides a favorable strength-to-weight ratio for overhead tray runs and long horizontal spans, though installers must use the separately sold insulating washers and spacers (Panduit part numbers vary by tray type) when clamping copper-jacketed cables to prevent galvanic cell formation. Spacing cleats per NEC 110.14 and manufacturer torque specs (consult Panduit installation guide PDA0043 for trefoil-specific intervals) ensures the installation passes AHJ inspection and maintains mechanical integrity through the facility's service life.
The CCALTR3135-X targets medium-voltage feeder installations where short circuit protection is code-mandated but corrosive environments (saltwater, chemical exposure) don't justify full stainless construction. The 10-pack quantity aligns with typical riser or horizontal run cleat intervals—installers can stage material for a complete feeder route without over-purchasing. For harsher environments or higher fault currents, Panduit's stainless TR-series cleats offer upgraded corrosion resistance; for lighter-duty branch circuits under 50kA fault exposure, the company's polymer cleats reduce material cost. This aluminum trefoil cleat occupies the mid-tier: IEC-certified protection, proven fault current withstand, and aluminum durability for the majority of commercial and industrial power distribution applications.
