Staubli Branch Connector MC4-EVO 2
$28.80
This product comes with pairs. One pair contains a branch socket (type: PV-AZB4-EVO 2-UR) and a branch plug (type: PV-AZS4-EVO 2-UR). MOQ: 1 carton, 250 pairs per carton
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Description
The Staubli Branch Connector MC4-EVO 2 (model ST-MC4-EVO 2-Branch) is a high-performance MC4 connector designed to safely split and combine photovoltaic (PV) module strings in solar arrays.
This plug-and-play branch connector enables simple parallel or serial-parallel connections of PV modules, supporting system voltages up to 1500 V DC under both IEC and UL standards. Its dual-certified design (IEC 62852 and UL 6703) ensures compatibility with high-voltage solar installations.
The connector’s IP68-rated housing provides outstanding water and dust resistance, making it ideal for outdoor and harsh environments. Compatible with standard Staubli MC4 and MC4-EVO 2 PV cables, this branch connector simplifies inventory and installation.
Featuring Staubli’s proven MULTILAM contact technology, it delivers low contact resistance and long-term stability for reliable operation over the life of the system.
Staubli Branch Connector MC4-EVO 2
The Staubli MC4-EVO 2 Branch Connector is a two-in-one solution comprising a branch plug (male) and branch socket (female) to create safe parallel junctions of solar panels. It allows one input line to split into two outputs (and vice versa), enabling easy wiring of parallel. The connector’s black PA (polyamide) housing is compact and versatile, saving space on rooftops. Installation is tool-free and intuitive: no crimping or torqueing is required – simply insert stripped conductors and snap the connector closed. A locking system (locking type) securely holds the connection, preventing accidental disconnection during operation. Internally, Staubli’s MULTILAM spring-contact system ensures a consistent high-pressure contact for minimal power loss.
- Plug-and-Play Installation: The MC4-EVO 2 branch connector uses a snap-in assembly. Wiring requires no special tools or separate crimp sleeves, speeding up installation and reducing labor time.
- High-Voltage Capability: Rated for up to 1500 V DC (IEC) and UL-certified to 1500 Vs, it supports modern high-voltage PV systems, allowing longer strings and fewer combiner boxes.
- Rugged, Weatherproof Design: Both plug and socket housings are IP65/IP68 rated.
- Standards-Compliant: Certified by TÜV and UL (UL6703), the branch connector meets stringent safety standards. Its flame-class UL94-V0 body and Class II insulation also contribute to safe PV wiring.
- Broad Compatibility: Works with Staubli’s original MC4 cable family. The branch connector mates seamlessly with standard MC4 and MC4-EVO 2 positive/negative leads, simplifying upgrades and expansions.
Key Features of Staubli MC4
- Rated Voltage: DC 1500 V (IEC 62852:2014 + A1:2020); DC 1500 V (UL 6703).
- Test Voltage & Surge: 8 kV dielectric test; 16 kV impulse voltage.
- Rated Current: IEC 60 A; UL 50 A.
- Protection: Mated IP65/IP68 (1 m, 1 h); unmated IP2X.
- Temperature Range: -40 °C to +85 °C (IEC); up to +90 °C (UL); upper limit +115 °C (IEC).
- Contact Resistance: <0.5 mΩ (plug connectors).
- Contact System: MULTILAM copper contacts with tin plating, ensuring low loss and vibration resistance.
- Insulation: Polyamide (PA), flame class UL94-V0; UV-stabilized.
- Salt Mist: Certified for IEC 60068-2-52, severity level 6 (resistant to salt spray).
- Certifications: TÜV Rheinland (IEC 62852:2014+A1:2020, R60149724) and UL (UL6703, file E343181).
- Compatibility: Mates with Staubli Original MC4 and MC4-EVO 2 connectors.
Main Benefits
- Time-Saving Installation: The crimp-free, snap-in design drastically reduces assembly time and effort. Installers can quickly branch PV strings without specialized tools, increasing safety and productivity.
- High Water Resistance: With an IP68 rating, the branch connector is fully sealed against rain, dust, and immersion. This minimizes failure risks in harsh climates and lowers maintenance costs.
- High-Voltage Ready: Supporting up to 1500 V DC allows system designers to use longer module strings, optimizing system layout and reducing BOS (Balance of System) costs.
- Wide Cable Compatibility: Works with standard 4–6 mm² solar cables and mates with both original MC4 and MC4-EVO 2 series. This flexibility means fewer different parts to stock for resellers and installers.
- Exceptional Reliability: Staubli’s MULTILAM contacts and robust materials ensure low contact resistance and long service life. The connector resists UV degradation and salt corrosion, key for coastal or desert installations.
- Trusted Quality: As a product of Staubli, the branch connector carries the assurance of a market-leading, Swiss-engineered brand. Distributors and EPCs can promote it with confidence that it meets international safety standards.
Caveat: The product description and datasheet on this page may not be the most updated version. Please refer to the user manual coming with products if there are conflicts.
Staubli
Stäubli (Staubli) is the original inventor and global leader of MC4 solar connectors. Designed and engineered in Switzerland, Staubli’s MC4 connectors are renowned for Swiss precision and robust quality. As the market-leading photovoltaic connector manufacturer worldwide, Staubli ensures that its products provide optimal efficiency and safe, long-term performance in solar applications. Installers and system designers trust Staubli MC4 components to minimize risk and maximize energy yield for PV installations.
This branch connector is used to safely split or combine PV module strings. It provides a 2-to-1 (or 1-to-2) junction, enabling parallel or serial-parallel wiring of solar panels. For example, two module strings can be combined into one output line, or a single string can branch into two paths, without requiring additional junction boxes.
The Staubli branch connector is rated for DC 1500 V (IEC and UL) and 60 A (IEC) operating current. It has been tested for 8 kV dielectric and 16 kV surge voltages. It is certified under IEC 62852 and UL 6703 standards, giving assurance that it meets global solar PV safety and performance requirements.
Yes. The connector’s housing is IP65/68 rated when mated, meaning it is dust-tight and can withstand immersion in 1 m of water for 1 hour. Its materials are UV-resistant and it passed severe salt-spray tests. These features make it ideal for outdoor PV installations exposed to rain, dust, or coastal conditions.
The connector accommodates standard PV cable cross-sections (typically 4–6 mm²). It mates seamlessly with Staubli’s original MC4 and MC4-EVO 2 male/female connectors. In practice, this means it works with the same cables and tools you use for other MC4 installations, simplifying inventory and wiring.
No special tools are required. The Staubli MC4-EVO 2 branch connector features a crimp-free, snap-in design. Installation involves stripping the cable, inserting it into the connector, and snapping the housing closed. The built-in spring clamp makes the electrical contact automatically. This tool-free assembly saves time and ensures a reliable, tight connection without manual crimping.
| Dimensions and Weights | |
|---|---|
| Weight | 9 kg |
| Dimensions | 40 x 30 x 30 cm |
| Download Area | |
|---|---|
| Staubli Branch connector MC4-Evo 2 datasheet | Download |
| Rated Voltage | DC 1500 V (according to IEC 62852: 2014 + AMD1:2020)
DC 1500 V (according to UL 6703) |
||||||
| Test voltage | 8 kV | ||||||
| Rated impulse voltage | 16 kV | ||||||
| Rated current IEC | 60 A | ||||||
| Rated Voltage | DC 1500 V (according to IEC 62852: 2014 + AMD1:2020)
DC 1500 V (according to UL 6703) |
||||||
| Test voltage | 8 kV²) | ||||||
| Rated impulse voltage | 16 kV | ||||||
| Rated current IEC | 60 A¹) | ||||||
| Rated current UL | 50 A¹) | ||||||
| Ambient temperature range (IEC)
Ambient temperature range (UL) |
-40 °C … + 85 °C
-40 °C … + 90 °C |
||||||
| Upper limiting temperature IEC | 115 °C¹) | ||||||
| Degree of protection, mated
Degree of protection, unmated |
IP65 / IP68 (1 m, 1 h)
IP2X |
||||||
| Pollution degree | 3 | ||||||
| Contact resistance of plug connectors | < 0.5 mΩ | ||||||
| Safety class | II | ||||||
| Contact system | MULTILAM | ||||||
| Contact material | Copper, tin plated | ||||||
| Insulation material | PA | ||||||
| Locking system | Locking type | ||||||
| Flame class | UL94-V0 | ||||||
| Salt mist spray test, degree of severity 6,
according to IEC 60068-2-52 |
Yes | ||||||
| Ammonia resistance (according to DLG) | Pending | ||||||
| UV resistance (according to ISO 4892-2/3) | Yes | ||||||
| TÜV Rheinland certified according IEC62852:2014+AMD1:2020 | R 60149724 | ||||||
| UL certified according UL6703 | E343181 | ||||||
| Compatible with connector type | Original MC4
Original MC4-Evo 2 |
||||||
| Maximum altitude above sea level for operation | 5000 m; AK 60159400 | ||||||
Tania L –
Quick, reliable, and top quality
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Nuch –
Needed these for my solar installation. Delivered quickly, no hassles at all. Couldn’t ask for better service
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Alfret simonism –
Top-notch product, works well
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Tim –
Happy with the order, though it took a couple of days to figure out which size I needed. All good now
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Daniel ching –
I had an issue with the wrong connectors sent at first, but customer support quickly sorted it. Great service and product
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