Wago 284-621 Terminal Block, 35mm² Screw and 10mm² Spring Clamp, Grey

The Wago 284-621 terminal block is a professional-grade electrical connector engineered for robust and reliable wire termination in demanding industrial environments. This component features a hybrid connection design, combining a 35mm² screw terminal for heavy-duty power distribution with three 10mm² spring clamp connections for secondary circuits. Its grey housing is designed for standard DIN-rail mounting, ensuring a secure and organized electrical installation within control cabinets and distribution boards.

Advantages

The primary benefit of this terminal block is its versatility in handling different wire gauges within a single compact unit. The combination of a high-capacity screw connection and multiple spring-loaded clamps allows for efficient branching of electrical circuits without the need for additional bridging components. The spring clamp technology provides maintenance-free connections that are resistant to vibrations, while the screw terminal ensures a high-torque, permanent connection for larger conductors. This dual-technology approach optimizes space and reduces installation time in complex wiring systems.

Suitable for

• Industrial control cabinet wiring
• Power distribution systems
• Automation and machinery control panels
• Electrical installations requiring mixed wire gauge connectivity

This terminal block may not be suitable for applications involving extremely high-frequency signals or environments where the operating temperature exceeds the specified thermal limits of the housing material. It is also not intended for direct use in hazardous locations without appropriate protective enclosures.

Key specifications

• Main connection: 35mm² screw terminal
• Secondary connections: 3x 10mm² spring clamp terminals
• Width: 17.5 mm
• Depth: 89 mm
• Height: 39.5 mm
• Color: Grey

To install the Wago 284-621, snap the unit onto a standard DIN rail. For the screw terminal, strip the conductor to the appropriate length and secure it using a compatible screwdriver, ensuring the specified torque is applied. For the spring clamp connections, insert the stripped wire directly into the terminal point until it is firmly held by the spring mechanism. Ensure all connections are fully seated and that no bare wire is exposed outside the terminal housing.

What to consider before purchase

• Verify that the wire cross-sections match the 35mm² and 10mm² terminal capacities
• Ensure the DIN rail type is compatible with the mounting footprint
• Check the total current load requirements of your circuit
• Confirm the environmental conditions are within the product's operating specifications

Always follow local electrical codes and safety regulations when installing terminal blocks. Ensure power is disconnected before performing any wiring work to prevent electrical shock or damage to the equipment.