Overview
Thomas & Betts J973 is a non-insulated large tubular ring terminal engineered for secure wire termination in industrial control and electrical distribution applications. Made of copper with metallic electro tin plated finish for high conductivity, each kit includes 50 individual terminals ready for crimping. This is a standard component choice for control engineers and maintenance technicians assembling switchgear, motor starters, and power distribution enclosures.
Key Features
- Brazed seam wire barrels that can be crimped at any place on the barrel circumference
- Compatible with crimping tools having a single indentor or double indentor (recommended for solid wire)
- Electro tin plated copper construction for corrosion resistance
- Non-insulated design suitable for gauged wire applications
- 50-count kit provides economical bulk purchasing for production runs and panel builds
Technical Specifications
The J973 is rated for large-gauge conductors and heavy-duty industrial circuits. Key electrical and mechanical attributes include:
- Conductor range: 1/0 AWG (minimum) to 2/0 AWG (maximum)
- Stud size: 3/8 inch
- Voltage rating: 600 Volt AC
- Temperature rating: 105°F (or 150°C per alternate source)
- Overall dimensions: 1.99 inches length × 0.84 inches width × 0.06 inches thickness
- Approvals: UL 486A/B/C/310, CSA C22.2
- Standard package: 50 terminals per kit
Typical Applications
The J973 is widely used in:
- Motor control centers and variable frequency drive (VFD) terminals
- Switchgear and distribution panel wire termination
- Power and control transformer secondary connections
- Industrial machinery and equipment electrical assemblies
- Emergency backup power and generator interconnects
Compatibility & Replacements
Compatible With
- All standard industrial crimping tools (single- or double-indentor recommended)
- 3/8-inch stud or bolt holes on busbars and terminal pads
- Motor control centers (MCC) and switchgear terminals
- Distribution panels and control enclosures
- Heavy-gauge 1/0 and 2/0 AWG wire assemblies
Replaces / Drop-In Replacement For
The J973 is the standard large-gauge tubular ring terminal from the Sta-Kon J Series product line. Verify compatibility with your system integrator before ordering if replacing similar part numbers from competing brands.
Works With
- Sta-Kon manual and hydraulic crimping tools (engineered tool matching recommended by manufacturer)
- Double-indentor crimpers for solid conductor wires
- General-purpose industrial-grade wire crimpers rated for large-gauge terminals
- Control panel and switchgear assembly workflows in electrical contracting
