Stäubli

Manufacturer of the MC4 connector

Stäubli Electrical Connectors — formerly Multi-Contact — is the manufacturer of the MC4 connector for DC connections in photovoltaic systems. As module currents and system voltages rise, so do the demands on DC cabling; the product range includes the MC4, the further developed MC4-Evo 2 for systems up to 1500 V DC, as well as Y-connectors, couplings and installation accessories.

The technical basis is the tried-and-tested MULTILAM contact technology, a spring contact within the connector.

Why ‘MC4-compatible’ is not the same thing

The term ‘MC4-compatible’ is often used in the industry. Stäubli advises against connecting its connectors to those of other manufacturers (cross-mating): according to Stäubli, such connections lose their IEC and UL certification. According to the data sheet, MULTILAM technology ensures consistently low power losses.

Stäubli at ACTEC

ACTEC stocks genuine Stäubli connectors and the associated Stäubli tools, such as crimping pliers and test probes. Also available in the range: solar cables compliant with H1Z2Z2-K.