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.

14530856 Stäubli Coupling Socket - PV-KBT4-EVO READY - 32.0030

The original MC4 product portfolio now offers a PV connector featuring user-friendly snap-in technology. This PV-DC-connector can be installed quickly, as it enables crimp-free assembly without special tools.

€3.49
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530855 Stäubli Connector - PV-KST4-EVO READY - 32.0029

The original MC4 product portfolio now offers a PV connector featuring user-friendly snap-in technology. This PV-DC-connector is quick to install, as it enables crimp-free assembly without the need for special tools.

€3.49
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530521 Stäubli connector socket MC4 II 4.6.0 mm², cable 5.9–8.8 mm - PV-KBT4/6II-UR - 32.0016P0001-UR

MC4 II coupling sleeve for 4 and 6 mm² cables ranging from 7.0 to 8.8 mm. Mated IP65/IP68, unmated IP2X, usable from −40 to +85 °C; according to the datasheet, it can only be unlocked with a tool as per NEC 2023.

€2.19
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530526 Stäubli Connector Socket MC4-Evo 2 I 4.6.0 mm², Cable 4.7–6.4 mm - PV-KBT4-EVO 2/6I-UR - 32.0086P0001-UR

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.
- Only 2 left
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530527 Stäubli connector MC4-Evo 2 I 4.6, 0 mm², cable 4.7–6.4 mm - PV-KST4-EVO 2/6I-UR - 32.0087P0001-UR

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. According to the manufacturer, suitable for all climatic conditions thanks to UV and ammonia resistance as well as a high IP protection rating (IP68, mated). 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 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530522 Stäubli connector MC4 II 4.6.0 mm², cable 7.0–8.8 mm - PV-KST4/6II-UR - 32.0017P0001-UR

MC4 II connector for 4 and 6 mm² cables with diameters from 7.0 to 8.8 mm. IP68, operating range from −40 to +85 °C; according to NEC 2020, can only be disconnected with a tool.

€1.71
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530528 Stäubli female connector MC4-Evo 2 II 4.6.0 mm², cable 6.4–8.4 mm - PV-KBT4-EVO 2/6II-UR - 32.0088P0001-UR

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.

€1.99
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530519 Stäubli female connector MC4 I 4.6.0 mm², cable 5–6 mm - PV-KBT4/6I-UR - 32.0014P0001-UR

According to the datasheet, this connector can only be unlocked with a tool as per NEC 2023.

€2.30
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530520 Stäubli connector plug MC4 I 4.6.0 mm², cable 5–6 mm - PV-KST4/6I-UR - 32.0015P0001-UR

MC4 I coupling connectors for 4 and 6 mm² on cables from 5 to 6 mm, rated up to 1,500 V. IP68, can only be unlocked with a tool — to prevent accidental disconnection under load.

€1.70
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530530 Stäubli connector socket MC4-Evo 2 II 10 mm², cable 6.4–8.4 mm - PV-KBT4-EVO 2/10II-UR - 32.0092P0001-UR

MC4-Evo 2 II connector socket for 10 mm² cables ranging from 6.4 to 8.4 mm, rated up to 1,500 V DC. Mated IP65/IP68, unmated IP2X, operating temperature range from −40 to +85 °C.

€3.21
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
14530531 Stäubli connector MC4-Evo 2 II 10 mm², cable 6.4–8.4 mm - PV-KST4-EVO 2/10II-UR - 32.0093P0001-UR

MC4-Evo 2 II connector for 10 mm² cables ranging from 6.4 to 8.4 mm, approved for up to 1,500 V DC. For operation from −40 to +85 °C.

€2.49
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
PV10710663 10 pairs of Stäubli MC4 plugs + sockets 4–6 mm², cable Ø 5–6 mm

€35.90
0 % VAT under § 12 Abs. 3 UStG Only with the operator declaration at checkout – without it, 19 % VAT is added.
- In stock Delivery by 21.10.2026
- Plus shipping costs · Parcel shipping
- Pickup in Karlsruhe possible
See set

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.