3RT1944-6A - Siemens Contact Kit

Siemens 3RT1944-6A Replacement Contact Kit – 3-Pole, S3 Frame, Main Contacts (3 NO)

If your contactor is still in good shape but the contacts are worn, replacing the contact kit is often the smartest move. The 3RT1944-6A replacement contact kit is made to match Siemens S3 frame contactors, giving you the correct fit and function without needing to swap out the entire unit.

This kit includes 3 movable and 6 fixed main contacts, along with the mounting hardware needed to install them properly. It’s designed for 3-pole contactors used in AC-3 applications up to 30 kW, so it fits right into many existing motor control setups. 

The version offered here is a professionally engineered aftermarket replacement, made in the U.S.A. It’s built to match the original contact configuration, making it a practical option for maintaining older equipment and keeping systems running as intended.

Key Features and Benefits

• Replacement contact kit for Siemens 3RT1944-6A
• Fits S3 frame size contactors
• 3-pole (3 NO) main contact configuration
• Includes 3 movable and 6 fixed contacts
• Comes with required mounting components
• Designed for AC-3 applications up to 30 kW
• Aftermarket replacement, manufactured in the U.S.A.
• Helps extend the life of existing contactors

Technical Specifications

• Catalog Number: 3RT1944-6A
• Product Type: Contactor contact replacement kit
• Frame Size: S3
• Poles: 3
• Contact Type: 3 NO (normally open)
• Application: AC-3, up to 30 kW
• Contact Set Includes:3 movable contacts
  6 fixed contacts
• Mounting Hardware: Included
• Dimensions: 3.15" x 1.65" x 0.59"
• Weight: 0.22 lb

Material Compliance and Certifications

• Manufactured using materials suited for electrical switching applications
• Designed to align with original Siemens contactor specifications
• Suitable for use in systems requiring consistent electrical contact performance
• Supports compliance when installed in properly rated equipment

Where It Works Best

• Servicing Siemens S3 contactors already in operation
• Motor control systems running under AC-3 duty conditions
• Industrial and commercial panels with existing contactor setups
• Maintenance jobs where only the contacts need replacement—not the full unit
• Facilities focused on keeping legacy equipment in service