Quick Answer: Choose an MC4 panel-mount interface by its job: continuous cable passage or a fixed, disconnectable connection at an equipment wall. For a receptacle, freeze the exact series, enclosure material and wall drawing, seal arrangement and approved mating parts together. A familiar connector outline does not establish enclosure fit or mating approval.
For equipment OEMs and enclosure buyers, the key purchasing record joins a connector part number to a defined housing interface.
Manuscript last updated: October 6, 2026.
Do You Need a Cable Gland or a Fixed Panel Receptacle?
A cable gland passes a continuous cable through a surface; a panel receptacle provides a fixed connection at the equipment wall. An inline coupler joins cable ends away from that wall-mounted interface.
| Part class | Connection job | Purchase question |
|---|---|---|
| Cable gland | Continuous cable passage | What seals around the cable? |
| Inline coupler | Connection between cable ends | Which cable-end assembly? |
| Panel receptacle | Fixed equipment-wall interface | Which enclosure and mating parts? |
Here, panel mount means the equipment housing, not the solar-panel frame. A receptacle also supplies no charge-control or string-combining function.
The manufacturer's panel-receptacle product explanation identifies inverter and module-level power-electronics PV inputs as applications. This is a specific product context, not a universal equipment recommendation.
Identify the Receptacle Series and Its Mating Connector
Identify the exact receptacle series and the approved mating connector before requesting a substitute. A family name or similar shell cannot establish the complete purchased pair.
The Stäubli MC4-Evo 2 catalogue, August 2025 distinguishes PV-ADB4-EVO 2A and PV-ADS4-EVO 2A panel-receptacle variants from PV-KBT and PV-KST cable couplers. Keep the full variant and contact identification in the RFQ.
Request both sides' manufacturer, series and part numbers, with documented polarity identification. Do not infer electrical polarity from a connector's apparent housing gender.
MA713 limits mating to manufacturer-authorized combinations and prohibits mixing other manufacturers' connectors. An MC4-compatible label is not that authorization.
For low-voltage non-PV use, obtain the additional technical documentation required by the manufacturer. A high voltage rating does not, by itself, approve the connector for an arbitrary low-voltage device.
Approve the Housing Material, Wall Thickness and Cutout
Approve the enclosure interface using the selected receptacle's actual drawing and your housing specification. Wall material, thickness, cutout and access space belong to the same fit decision.
For the series covered by MA713, August 2025, Index b, the documented wall ranges are 1–4 mm for metal and 1–6 mm for plastic. Outside those ranges, application validation is required; these are not limits for all panel connectors.
Use the original page 7 drawing for the anti-rotation and round-hole options and their tolerances. Attach the applicable drawing to the enclosure review instead of deriving a drilling diameter from a photograph or a connector thread label.
Include internal and external space for the specified tools, mating connector and cable approach. A cutout that accepts the body may still leave access unresolved.
Ask the enclosure designer to confirm the selected option and document revision before sample release. This buying checklist provides no hole pattern, machining instructions or installation approval.
Separate the Panel Seal From the Mated Connector Rating
Review the receptacle-to-wall seal separately from the connector's mated protection claim. Neither boundary alone establishes the protection of the complete assembled enclosure.
MA713 identifies a flat seal whose omission or incorrect assembly compromises protection. Keep that seal, its location and the applicable assembly checks attached to the quoted receptacle.
The manual's approximately 1.7 Nm tightening value is typical and needs validation for the selected enclosure. It is not a universal torque to copy into another connector's purchase or installation instructions.
Request the specified sealing cap for any unmated end and confirm the conditions attached to the protection evidence. Do not treat an exposed receptacle as equivalent to the documented mated assembly.
At sample acceptance, reconcile the delivered seal, nut, cap and receptacle identification with the approved BOM. Have the responsible enclosure team assess the complete assembly against its requirements; this article supplies no energized assembly procedure or home test.
Freeze the Connector and Enclosure BOM Together
Freeze the connector and enclosure records together so each quotation describes the same interface. Use a response sheet that makes omitted or unresolved parts visible.
| Field | Record or request | Review purpose |
|---|---|---|
| Receptacle | Manufacturer, series, SKU | Identify exact part |
| Application | PV input electrical range | Check intended use |
| Housing | Material and wall thickness | Match series limits |
| Cutout | Drawing and anti-rotation option | Match tolerances |
| Access | Inside and outside clearance | Review tools and mating |
| Cable/contact | Specification and part identity | Match assembly documents |
| Mating end | Series, authorization, polarity | Confirm approved pair |
| Supply list | Seal, nut, cap, documents, quantity | Identify inclusions |
Ask the supplier to identify which seals, caps and assembly documents arrive with the quoted quantity, rather than assuming a complete accessory package. Keep the selected document revision with the response. If a receptacle, contact or seal changes, ask whether the enclosure and mating confirmations still apply before accepting the substitution.
Request a Compatible Solar Accessory Configuration
Request an availability and fit review for the defined interface, rather than assuming the sourcing route supplies a named manufacturer's receptacle. LinkSolar is a supplier; a specific connector offer needs confirmation.
Through the solar accessories collection, request a quote with the enclosure sketch, application, intended receptacle and mating-connector details. An early enquiry can start with incomplete drawings while open points are identified.
Ask the reply to confirm whether the requested series can be sourced and identify the complete supplied BOM. Source authorization, approved mating parts, acceptance documents, price, MOQ and lead time remain quotation items.
Before approving a sample, resolve the enclosure interface and supplied components with the responsible parties. No stock, authorized-dealer relationship or equipment compatibility is established by this guide.
MC4 Panel-Mount Connector FAQ
Does panel mount mean a solar-panel frame?
Here it means a connector fixed in an equipment housing wall. The receptacle's mounting features and seal must match that housing. A solar-module frame is a different object; this guide does not approve mounting a connector in one or provide a frame-modification procedure.
Can a cable gland provide the same removable interface?
A gland seals around a continuous cable crossing the surface. It does not provide the fixed mating interface described here. Choose the part class from the required connection job, then review its actual assembly rather than assuming a gland and receptacle perform the same function.
Does an MC4-compatible label confirm mating approval?
No. Obtain the selected manufacturer's authorization for the exact pair, with both series and part identities recorded. Similar appearance or a compatible label cannot replace that evidence; the MA713 example does not authorize a receptacle to mate with an unspecified connector from another manufacturer.
Is the connector IP rating the enclosure rating?
No. Identify the conditions and assembly covered by the connector claim, including mating state and required seals or caps; the receptacle-to-wall interface and complete housing need their own applicable review. A component rating alone does not demonstrate the finished enclosure's protection.
MC4 and MC4-Evo are registered trademarks of Stäubli. The manufacturer series is a technical example; no LinkSolar dealership, affiliation or manufacturer certification is implied.