Universal terminal clamp OTH300-3 with two mounting holes 3xAl/Cu 70-300 mm² 1250A, 1000V MAC3300A14

Universal solution for electrical connections

The universal terminal block MAC3300A14 is designed for direct connection of copper and aluminum conductors to switchgear. It allows the connection of three conductors with cross-sections ranging from 70 to 300 mm² without the need for cable lugs.

Construction and material compatibility

The terminal block construction utilizes a screw connection for securing conductors and a pin connection enabling attachment to distribution devices. Conductive elements are made from materials compatible with both copper (Cu) and aluminum (Al), eliminating galvanic issues when different metals come into contact.

The compact design features two mounting holes, ensuring stable installation in switchboards and control cabinets. The absence of insulating components in the construction allows for maximum current-carrying efficiency while maintaining minimal device dimensions.

Operating parameters and application capabilities

The device operates at a rated voltage of 1000V and a rated current In = 1250A, making it suitable for circuits with high current loads. The single-pole construction with three terminals per pole enables parallel routing of three conductors with identical cross-sections or mixed cross-sections within the range of 70 to 300 mm².

Universality is also reflected in the ability to connect various conductor types: stranded conductors without sleeve lugs (70-300 mm²), stranded conductors with sleeve lugs (70-240 mm²), and multi-strand conductors (70-300 mm²). This flexibility simplifies installation design and reduces costs by eliminating the need for additional intermediary components.