Siemens 3RT1966-4EA1 3-Pole Terminal Cover for S10 and S12 Contactors

The Siemens 3RT1966-4EA1 is a high-quality 3-pole terminal cover specifically engineered for use with S10 and S12 size contactors. This essential accessory is designed to provide robust protection for electrical connections, effectively shielding live parts and preventing accidental contact during operation. As part of the SIRIUS modular system, it ensures seamless integration with compatible contactors, overload relays, and soft starters, maintaining the highest standards of safety and reliability in industrial electrical installations.

Advantages

This terminal cover offers superior protection by enclosing busbar connections or box terminals, which significantly reduces the risk of electrical hazards in the workplace. Its durable construction is built to withstand the rigors of demanding industrial environments, ensuring long-term system integrity. The design allows for a precise fit, which simplifies the installation process and ensures that the protective barrier remains securely in place during operation. By utilizing this component, users can easily comply with safety regulations regarding exposed electrical terminals.

Suitable for

• S10 and S12 size contactors
• 3RT1 contactors
• 3RB2 overload relays
• 3RW4 and 3RW507 soft starters
• Industrial control panels and switchgear assemblies

When it may not be suitable

This terminal cover is specifically dimensioned for S10 and S12 frame sizes. It is not compatible with smaller or larger contactor frame sizes and should not be forced onto incompatible equipment.

Key specifications

• Number of poles: 3
• Compatible frame sizes: S10 and S12
• Application: Busbar connections or box terminals
• System compatibility: SIRIUS modular system

How to use

To install the terminal cover, ensure that the power supply to the contactor is completely disconnected and locked out. Align the cover with the terminal area of the S10 or S12 contactor. Press the cover firmly into position until it snaps securely onto the housing, ensuring that all live terminals are fully enclosed. Verify that the cover is stable and does not obstruct any other control wiring or auxiliary components before restoring power to the system.

What to consider before purchase

• Verify the frame size of your existing contactor (must be S10 or S12).
• Check the compatibility with your specific series (3RT1, 3RB2, 3RW4, or 3RW507).
• Ensure sufficient physical space in your control cabinet for the added dimensions of the cover.

Usage recommendations

Always perform a visual inspection of the terminal cover during routine maintenance to ensure it remains free of cracks or damage, and replace it immediately if the structural integrity is compromised to maintain optimal safety levels.