CA-81 - Square D Contact Kit

CA-81 - Square D Contact Kit

A precision-engineered solution for Series A and B “old style” Size 1 units. Ideal for HVAC systems, industrial automation, and motor control setups, this kit delivers a plug-and-play replacement without the expense or downtime of a full contactor swap.

Key Features and Benefits

• Direct OEM Swap: Designed to slide right into older Square D Series A & B Size 1 contactors, this kit restores full electrical performance effortlessly.
• Complete 3‑Pole Assembly: Includes three moving contacts and six stationary contacts, enabling clean three-phase switching in one compact unit.
• 600 VAC / 27 A Rating: Built to manage both resistive and motor loads up to 27 amps at 600 volts AC, this kit ensures reliable operation under demanding conditions.
• Silver‑Alloy Contacts: The premium silver alloy resists welding, delivers more extended life, and maintains consistent conductivity—ideal for regular switching cycles.
• All‑In‑One Set: Comes with springs, screws, and mounting hardware—so you’ve got everything you need for a straightforward, no‑fuss installation.

Technical Specifications

• Type: 3‑pole contact kit for NEMA Size 1
• Compatibility: Square D Series A & B “old style”
• Current Rating: 27 A at 600 VAC
• Contact Layout: 3 moving + 6 stationary contacts
• Hardware Included: Springs, screws, and mounting parts
• Approx. Weight: 0.25–1 lb (depends on packaging)

Material Compliance and Certifications

• Crafted or sourced: To meet Schneider Electric (Square D) specifications, ensuring authentic OEM-level performance.
• Silver-Alloy Contacts: Resists welding and arcing—designed for consistently precise contact over thousands of cycles.

Where It Works Best

• HVAC Equipment: Build reliability back into fan motors, compressors, and more.
• Motor Starters & Control Centers: A quick, professional-grade swap-in for any Size 1 contactor system in need of a refresh.
• Vintage or Refurbished Units: Keep older Square D systems running without investing in a completely new contactor chassis.
• Facility Maintenance & OEM Repair Bays: A perfect go-to for technicians seeking a dependable and efficient repair solution.