MC4 connector pair - female + male 4-6mm² Type 4 PV-KBT4/6I

The MC4 connector pair, Type 4 PV-KBT4/6I, from Stäubli (MPN: 2H-FURD-397Z) is a photovoltaic connector set for terminating solar cables with a conductor cross-section of 4 to 6 mm². The set consists of one MC4 female connector and one MC4 male connector, including the matching contacts, and is suitable for permanently secure DC connections in photovoltaic systems. The connectors feature a proven snap-in locking system, high protection against accidental contact and weathering, and reliable strain relief in accordance with IEC 61984.

Your Benefits

• Original Stäubli MC4 Connector Set (1x plug, 1x receptacle)
• Suitable for solar cables with a conductor cross-section of 4–6 mm²
• For system voltages up to 1000 V DC
• Rated current up to 30 A
• IP67 protection rating when connected
• Snap-in locking mechanism for a secure connection
• Tinned copper contacts for reliable current transmission
• Temperature range from -40 °C to +90 °C
• UV- and weather-resistant for outdoor use

For assembling photovoltaic cables

MC4 connectors are now among the most widely used connection systems in photovoltaic installations. They are used to securely connect solar modules, extension cables, or connection cables to one another. This set is suitable for solar cables with a conductor cross-section of 4 to 6 mm² and enables a durable, high-load-capacity connection in the DC range. The integrated snap-in locking system prevents accidental disconnection of the connector and, together with the sealing elements, ensures high resistance to moisture, dust, and weather conditions.

Original Stäubli MC4 System

This product consists of original MC4 connectors from Stäubli. The MC4 system is one of the most widely used connector systems for photovoltaic systems worldwide and meets the requirements of the relevant standards for PV connectors. The contacts are made of tinned copper and utilize the proven MC contact lamella system, which is designed to ensure a permanently secure electrical connection and low contact resistance.

Installation Instructions

The connectors are designed for crimping. To ensure a connection that complies with standards and remains reliable over time, the manufacturer recommends using suitable crimping tools and installation tools. After crimping, the contact and cable are inserted into the connector housing until they audibly click into place. The cable gland is then tightened, which simultaneously provides strain relief and a seal. The detailed installation sequence is described in the Stäubli installation manual.

Compatibility

The connector set is designed for photovoltaic cables with a conductor cross-section of 4 to 6 mm². When selecting a cable, consider not only the conductor cross-section but also the permissible outer cable diameter to ensure that the seal and strain relief function correctly. Original MC4 connectors should be used and installed exclusively in accordance with the manufacturer’s specifications to ensure the specified electrical and mechanical properties.

Technical Data

• System voltage: up to 1000 V DC
• Rated current: up to 30 A
• Protection class: II
• Suitable for conductor cross-sections: 4–6 mm²
• Locking system: Snap-in
• Contact system: MC contact lamellas
• Contact material: tinned copper
• Insulation material: PA
• Flame class: UL94 V-0
• Cable strain relief in accordance with IEC 61984
• Environmental conditions
• Protection rating (when plugged in): IP67
• Protection against accidental contact (unplugged): IP2X
• Temperature range: -40 °C to +90 °C

Scope of Delivery

1x MC4 female connector, type PV-KBT4/6I
1x MC4 plug, type PV-KST4/6I
Matching crimp contacts for both connectors