Wago 280-621 4-Conductor Terminal Block, 2.5mm², Grey

The Wago 280-621 is a high-quality 4-conductor terminal block engineered for secure and reliable electrical connections in professional environments. Designed with a 2.5mm² capacity, this grey terminal block is optimized for DIN-rail mounting, making it an essential component for organizing complex wiring in industrial and commercial control cabinets. Its robust construction ensures long-term connection stability and efficient space management within electrical distribution systems.

Advantages

This terminal block offers superior reliability through its advanced spring pressure connection technology, which maintains consistent contact force regardless of vibrations or thermal expansion. The 4-conductor design allows for efficient signal or power distribution, reducing the need for additional bridging components. Its compact footprint helps maximize space on DIN-rails, while the intuitive design ensures quick and error-free installation for electrical technicians.

Suitable for

• Industrial control cabinet wiring
• Commercial electrical distribution systems
• Automation and control panel assembly
• General electrical installation projects

This terminal block may not be suitable for applications requiring wire gauges larger than 2.5mm² or for environments exposed to extreme chemical corrosion without appropriate protective enclosures. It is also not intended for direct use in high-voltage power transmission lines or underwater installations.

Key specifications

• Conductor capacity: 2.5mm²
• Number of connection points: 4
• Mounting type: DIN-rail
• Width: 5 mm
• Depth: 73 mm
• Height: 28 mm
• Color: Grey

To use the Wago 280-621, first ensure the DIN-rail is securely installed in your enclosure. Snap the terminal block onto the rail until it clicks into place. Strip the insulation from your wires to the recommended length, then insert the conductor into the terminal point using a standard screwdriver to open the spring clamp. Ensure the wire is fully seated before releasing the clamp to achieve a secure, gas-tight connection.

What to consider before purchase

• Verify that the 2.5mm² wire capacity meets your specific circuit requirements
• Ensure sufficient space is available on your DIN-rail for the 5mm width of the block
• Confirm that the operating environment is compatible with standard terminal block specifications

For optimal performance and safety, always ensure that wires are stripped to the correct length and that the connection is fully seated. Regularly inspect terminal blocks in high-vibration environments to maintain system integrity.