Waterproof Connector Types for Solar PV, Energy Storage and LED Lighting
PVLinkTech manufactures IP67 and IP68 industrial waterproof connectors, junction boxes, surge protection devices and cable assemblies in Shenzhen, China. Eight waterproof connector types cover: screw and screwless field connectors, MC4-compatible solar connectors, energy storage connectors from 70 A to 500 A, battery busbar connectors, manual service disconnects, IP68 junction boxes with 1 to 14 cable entries, and 10 kV / 20 kV LED surge protection. Connector current ratings run from 17.5 A to 500 A, with DC voltages up to 1,500 V. Each of the eight waterproof connector types below opens into its own specification page.
UL 1977 / 4128 Recognized
CE · RoHS
ENEC · ETL · UKCA · NSW · CB
ISO 9001 · IATF 16949 · ISO 13485
IP67 / IP68
Waterproof Connector Types and Product Categories
Explore eight core connector and electrical protection product families. Choose the category that matches your cable size, current, voltage and application requirements to view specifications, models and technical details.
Screw Waterproof Connectors
M682–M685 · 2–6 poles · 17.5–32 A at 450 V AC (IEC) · 10–18 A at 300 V AC (ETL) · 0.5–2.5 mm² · −40 °C to 105 °C · IP68
ENEC · CE · UKCA · ETL · NSW · CB · RoHS
View screw waterproof connectors
→
Screwless Waterproof Connectors
Spring-clamp versions of the M684 / M685 bodies · 24 A and 32 A at 450 V AC · tool-free field wiring · IP68
Push-in terminal · ENEC · ETL · RoHS
View screwless waterproof connectors
→
MC4 / PV4 Solar Connectors
PV cable 4.0 / 6.0 mm² · 30 A · 1,000 V DC systems · IP68 in the mated condition · UL94 V-2
CE · RoHS · Rooftop / Utility / Floating PV
View MC4 and PV4 solar connectors
→
Energy Storage Connectors
70–500 A · 10–185 mm² · 1,000 / 1,500 V DC · contact resistance ≤0.2 mΩ · 500 mating cycles · IP67 · −40 °C to 125 °C
UL 1977 / 4128 recognized · CE
View energy storage connectors
→
Battery Busbar Connectors
Bolt and copper bar types · 100–600 A · up to 1,500 V DC · busbar 15×3 mm to 30×8 mm · anti-arc design · 360° rotation
PA66 + nickel-plated H59 brass · CE
View battery busbar connectors
→
Manual Service Disconnect
MSD 350 A · 1,500 V DC · 4,000 V AC withstand · two-stage interlock · 300 mating cycles · IP67 · M8 screw
UL94 V-0 · Battery Isolation
View manual service disconnects
→
IP68 Waterproof Junction Boxes
M686 series · 1 to 14 cable entries · 24 A at 450 V AC · ETL 10–15 A at 300 V AC · 0.5–2.5 mm² · −40 °C to 105 °C
ENEC · CE · ETL · NSW · UKCA · CB
View IP68 junction boxes
→
LED Surge Protective Devices
10 kV / 20 kV · In 5–15 kA · Imax 10–30 kA (model dependent) · 320 V AC (EU) · 277 V AC (US)
TUV · CE · ETL · CQC · GICL1 Current Limiter
View LED surge protective devices
→
Additional product solutions:
outdoor lighting and power distribution components, fused connectors,
air switches, circuit breakers, photocells, terminal blocks and
PV array junction boxes. Contact PVLinkTech for model selection and
application support.
Compare the Categories
All eight waterproof connector types in one table. Detail tables and drawings live on each category page.
| Category | Current | Voltage | Protection | Typical Use |
|---|---|---|---|---|
| Screw waterproof connectors | 17.5–32 A | 450 V AC (IEC) / 300 V AC (ETL) | IP68 | Outdoor lighting, industrial power |
| Screwless waterproof connectors | 24–32 A | 450 V AC (IEC) | IP68 | Tool-free field wiring |
| MC4 / PV4 solar connectors | 30 A | 1,000 V DC | IP68 mated | Rooftop, utility-scale, floating PV |
| Energy storage connectors | 70–500 A | 1,000 / 1,500 V DC | IP67 | BESS racks, battery packs, PCS |
| Battery busbar connectors | 100–600 A | 600–1,500 V DC | Confirm per model | Busbar and module connections |
| Manual service disconnect | 350 A | 1,500 V DC | IP67 | Battery isolation, service switch-off |
| Waterproof junction boxes | 24 A | 450 V AC / 300 V AC (ETL) | IP68 | Outdoor branching, street lighting |
| LED surge protection | In 5–15 kA, Imax 10–30 kA | 277–320 V AC | Confirm per model | Street and area lighting |
Find Connectors by Application, Current or Market
Three ways in, depending on what your project sheet already fixes. Each one narrows the waterproof connector types to a short list.
By Application
- Solar PV: rooftop, utility-scale, floating
- Battery energy storage and PCS
- EV charging infrastructure
- LED street and area lighting
- Landscape and tunnel lighting
- Water treatment and pump control
- Marine and dockside power
- Industrial automation and robotics
- Agricultural irrigation
By Current
- 17.5–32 A — field wiring, M682 to M685, 0.5–2.5 mm²
- 70–350 A — CN06 to CN12, 10–120 mm², BESS racks
- 400–600 A — CN14, LT400 and copper bar, 150–185 mm²
By Market Approval
- EU — CE, ENEC, TUV, UKCA
- US — UL 1977 / 4128, ETL
- China — CQC 277 V AC
- Global — CB, RoHS, ISO 9001 / IATF 16949
How to Choose a Waterproof Connector
Four steps narrow the waterproof connector types to the one you need.
- Fix the system voltage first. DC and AC do not share a rating. A connector rated 450 V AC is not automatically a 450 V DC part. State the system voltage on the inquiry, and say clearly when the circuit is DC.
- Match current to cable size. 0.5–1.5 mm² suits M682 and M683 at 17.5 A. 2.5 mm² suits M684 and M685 at 24–32 A. Storage work starts at 10 mm² for 70–120 A (CN06) and reaches 185 mm² for 400–500 A (CN14).
- Set the ingress protection from the environment. Indoor cabinets need less. Outdoor, coastal, buried or wash-down locations need IP67 or IP68. The mated condition matters: a connector is only sealed when both halves are correctly locked.
- Check the approval for the destination market. EU projects usually ask for CE, ENEC or TUV marks. US projects ask for UL or ETL. Solar DC connections also follow the same-type, same-brand rule for mated pairs in NEC installations.
Working on a PV array? Start from the solar connector selection guide for cable size, current and mating rules.
IP67 vs IP68: What the Rating Means
| Rating | Test condition | What it tells you |
|---|---|---|
| IP67 | 1 m water depth for 30 minutes (IEC 60529) | Survives brief immersion, heavy rain and wash-down |
| IP68 | Continuous immersion; depth and duration declared by the manufacturer | Suits long-term wet locations, but read the declared condition |
IP68 is not one fixed number. Two suppliers can both print IP68 with completely different test conditions, so ask for the declared depth and hours before comparing quotations. An unmated connector is not sealed; open lines need a cap if the contacts stay exposed.
Full comparison, including test conditions and what fails in the field: IP67 vs IP68 waterproof connectors
Factory, Certifications and Testing
All eight waterproof connector types are molded, assembled and tested in the same plant. The factory holds ISO 9001, ISO 13485, IATF 16949, CE, RoHS and UL registrations, plus patents on several housing designs. Incoming material is measured to 0.005 mm, and inspection reports and material certificates ship with production lots. Mold design, injection molding, metal stamping, harness assembly and testing all sit in one plant. Tell us your application, specification and estimated quantity and we will recommend a waterproof connector model and quote it.
Certificates · Quality control · OEM / ODM and custom cable assemblies
FAQ
IP67 means 1 m of water for 30 minutes under IEC 60529. IP68 means continuous immersion, and the depth and duration are declared by the manufacturer rather than fixed by the standard. Two IP68 connectors from different suppliers can be tested to very different conditions, so ask for the declared depth and hours before comparing quotations.
Eight families: screw and screwless field connectors (17.5 A to 32 A), MC4-compatible solar connectors, energy storage connectors (70 A to 500 A), battery busbar connectors, manual service disconnects, IP68 junction boxes and LED surge protective devices.
Start with the cable size. 0.5–2.5 mm² field wiring points to the M682 to M685 families. PV string cable points to MC4-compatible connectors. Anything from 10 mm² upward with a high current requirement points to the CN storage series. System voltage then separates the models inside the family you picked.
Ratings differ between waterproof connector types: 17.5 A to 500 A, and up to 1,500 V DC. The M686 junction boxes add ETL ratings of 10 A to 15 A at 300 V AC. The CN06 to CN14 storage series covers 70 A to 500 A at 1,000 V and 1,500 V DC, and the bolt and copper bar types reach 400 A and 600 A.
Samples are confirmed per model and quantity. Send the model number, the application and the expected quantity, and we will confirm cost and lead time.
Yes. Mold design, injection molding, metal stamping, harness assembly and testing are all in house. Nearly every waterproof connector type can be adapted, and common requests are housing color and laser markings, cable length, over-molded assemblies, panel-mount bodies and terminal style.
MOQ depends on the series and on whether new tooling is involved. Send the model and the quantity and we will confirm.
Send the four numbers, get a model recommendation
Cable size, system voltage, current and quantity. We reply with the waterproof connector type that fits, its datasheet and a quotation.
Request a Quote
Mold Design
Injection Molding
Stamping
Assembly
Testing
ISO 9001
IATF 16949