MC4 connectors

Stäubli coupler plugs and sockets in the MC4 and MC4-Evo 2 systems for 4 to 6 mm² and 10 mm², plus individual crimp contacts and sealing caps. Always select plugs and sockets of the same type.

14530533 Stäubli Crimp Contact MC4-Evo 2 Female - PV-BP4-EVO 2/6 - 32.0121P0100

Female crimp contact of the MC4-Evo 2 series for 4 and 6 mm² solar cables. Compatible with the current generation of Stäubli connectors.

€1.10
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530543 Stäubli Connector Sealing Cap - PV-SVK4 - 32.0717P0100

Protective caps for PV connectors that are not plugged in.

€1.00
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530542 Stäubli Socket Sealing Cap - PV-BVK4 - 32.0716P0100

Sealing cap for unused MC4-sockets: It keeps moisture and dirt out of open connectors as long as the system is not yet fully wired.

€1.00
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530540 Stäubli Crimp Contact MC4 Male - PV-SP4/6 - 32.0507P0100

Male crimp contact for Stäubli MC4 plugs, for 4 and 6 mm² solar cables. The counterpart to the female contact for on-site assembly.

€0.40
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530541 Stäubli Crimp Contact MC4-Evo 2 Male - PV-SP4-EVO 2/6 - 32.0521P0100

Male crimp contact of the MC4-Evo 2 series for 4 and 6 mm² solar cables — for assembly directly on the roof.

€0.70
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530532 Stäubli Crimp Contact MC4 Female - PV-BP4/6 - 32.0107P0100

Female crimp contact for Stäubli MC4 sockets, for 4 and 6 mm² solar cables. A clean crimp determines the contact resistance — and thus losses and heat in the connector.

€1.00
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.

from 10 pcs
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14532095 Stäubli female connector MC4-Evo 2 - PV-KBT4-EVO 2A/6I - 32.0316P0001

Internationally certified according to IEC, UL, JET, and cTÜVus. Approved for DC 1500 V (IEC, JET) and DC 1500 V (UL). The quality and durability of MULTILAM technology have been proven hundreds of millions of times since 2004. Suitable for all climatic conditions thanks to UV and ammonia resistance as well as a high IP protection rating (IP68). Field assembly or pre-assembled connectors; standard crimping pliers can be used. Plug-compatible with the original MC4-connector family.

€2.50
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14532096 Stäubli connectors MC4-Evo 2 - PV-KST4-EVO 2A/6I - 32.0317P0001

Internationally certified according to IEC, UL, JET, and cTÜVus. Approved for DC 1500 V (IEC, JET) and DC 1500 V (UL). The quality and durability of MULTILAM technology have been proven hundreds of millions of times since 2004. Suitable for all climatic conditions thanks to UV and ammonia resistance as well as a high IP protection rating (IP68). Field assembly or pre-assembled connectors; standard crimping pliers can be used. Plug-compatible with the original MC4-connector family.

€1.75
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530523 Stäubli female connector MC4 10 mm cable Ø 7.0–8.8 mm - PV-KBT4/10II - 32.0034P0001

According to NEC 2023, can only be unlocked with a tool. Proven, long-term stable MULTILAM technology, resulting in consistently low power loss over the entire service life of the connectors. Proven connector with over 15 years of field experience. For cross-sections up to 10 mm². Also available as pre-assembled cables. Plug-compatible with original Stäubli MC4 connectors only.

€2.89
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14532098 Stäubli couplers MC4-Evo 2 II - PV-KST4-EVO 2A/6II - 32.0321P0001

Internationally certified according to IEC, UL, JET, and cTÜVus. Approved for DC 1500 V (IEC, JET) and DC 1500 V (UL). The quality and durability of MULTILAM technology have been proven hundreds of millions of times since 2004. Suitable for all climatic conditions thanks to UV and ammonia resistance as well as a high IP protection rating (IP68). Field assembly or pre-assembled connectors; standard crimping pliers can be used. Plug-compatible with the original MC4-connector family.

€1.40
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 01.11.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible

MC4- Connectors link solar panels to one another and connect the string to the inverter. Stäubli’s male and female connectors are available here for conductor cross-sections of 4 to 6 mm² and 10 mm², in the MC4 and MC4-Evo 2 connector systems, along with individual crimp contacts and sealing caps.

MC4 or MC4-Evo 2

Both connector systems are manufactured by Stäubli; MC4-Evo 2 is the newer series. A plug must always be connected to a socket of the same type. According to Stäubli, mixed pairings – including with plugs from other manufacturers – are not permitted: whilst they may hold mechanically, they do not ensure a secure contact. The system installed on a system is indicated on the module’s connection cable or in the inverter’s data sheet.

Cross-sectional area and cable diameter

Each connector is designed for a specific conductor cross-section and a range of cable outer diameters, for example 4 to 6 mm² with a diameter of 5 to 6 mm. Both specifications are included in the product designation. The diameter of your cable is specified in its data sheet; if it does not match the connector, the cable gland will not provide a tight seal. For making multiple connections at once, a set of ten pairs of ‘MC4’ plugs and sockets for 4 to 6 mm² is available.

Crimp, do not solder

The contacts are crimped using the tool specific to the respective system. Crimping pliers, wire strippers and assembly wrenches can be found with the crimping pliers and the MC4-tool, whilst the cables are listed under solar cables. Sealing caps close off open plugs and sockets, for example on an unused input. Y-splitters and in-line fuses are available for connecting strands in parallel or providing individual protection.

The guide ‘Solar Cables and MC4-Connectors’ explains how solar cables and connectors fit together.