9998 SL11 - Square D Contact Kit

9998 SL11 - Square D Contact Kit

Over time, the contacts inside motor starters and contactors naturally wear down from repeated use. The 9998 SL11 replacement contact kit gives maintenance teams a straightforward way to keep compatible equipment in service without changing the original setup. Designed for use with Class 8502SG contactors, 8536SG starters, and 8903SX lighting contactors, this NEMA Size 5, 3-pole contact kit includes the movable and stationary contacts along with the hardware needed for installation.

Whether you’re servicing a motor control center, repairing lighting controls, or handling preventative maintenance in an industrial facility, this replacement kit is built to match the form and fit of the original assembly. It helps restore proper contact engagement in compatible 300A applications while supporting the continued operation of existing electrical equipment already installed in the field. The design is intended for dependable day-to-day use in commercial and industrial environments where reliable motor control components still matter.

Key Features and Benefits

• Compatible Equipment Support: Designed for compatible Class 8502SG contactors, 8536SG starters, and 8903SX lighting contactors.
• NEMA Size 5 Configuration: Fits NEMA Size 5, 3-pole devices.
• Complete Replacement Kit: Includes movable contacts, stationary contacts, and installation hardware.
• Restores Contact Performance: Helps restore proper electrical contact operation in existing equipment.
• 300A Application Compatibility: Intended for compatible 300A motor control and lighting control applications.
• Supports Existing Equipment: Supports maintenance and repair of existing Type S equipment.
• Original Form and Fit: Designed to match the original form and fit requirements.
• Industrial Durability: Built for long service life in industrial and commercial applications.
• Made in the U.S.A.: Professionally designed aftermarket replacement contact kit manufactured in the U.S.A.

Technical Specifications

• Catalog Number: 9998 SL11
• Product Type: Replacement Contact Kit
• Compatible Equipment:
  • Class 8502SG Contactors
  • Class 8536SG Starters
  • Class 8903SX Lighting Contactors
  • Class 8536 Type S Starters
  • Class 8903 Contactors
• NEMA Size: 5
• Number of Poles: 3
• Current Rating Compatibility: 300A
• Country of Origin: Mexico
• Package Weight: 3.351 lb. (1.520 kg)
• Package Dimensions:
  • Height: 4.200 in.
  • Width: 4.100 in.
  • Length: 4.700 in.
• Warranty: 18 Months

Material Compliance and Certifications

• Manufactured for compatibility with Type S contactors and motor starters
• Suitable for industrial motor control and lighting control maintenance applications
• Designed for use with established NEMA Size 5 equipment configurations
• Built for reliable electrical contact performance in compatible systems

Where It Works Best

• Motor control centers
• Industrial facilities and manufacturing plants
• Commercial building electrical systems
• HVAC equipment and motor starter applications
• Conveyor and material handling systems
• Pump control applications
• Lighting control systems using compatible 8903 contactors
• Preventative maintenance programs for existing electrical equipment
• Repair and service work involving legacy NEMA Size 5 assemblies