Product Range

IP66 Weatherproof Junction Box Series

10 enclosure families from 100×100 mm to 630×830 mm — hinged-lid IP66 weatherproof boxes, ABS/PC electronic junction enclosures, and terminal-ready models. One of four core lines on selhot.com; impact-resistant, UV-stable housings with custom knockout and OEM branding options.

SELHOT IP66 weatherproof plastic junction box series SHK SHAG SHQ3

ABS & PC Electronic Junction Boxes

Compact IP65 screw-down enclosures in flame-retardant ABS and UV-stabilized PC — rated 400V / 75A for wire splices, sensor housings, and terminal-ready outdoor installations. All series comply with EN 60670-1 and Class II double insulation.

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ABS Plastic Waterproof Electronic Junction Box
Model : SHQ3 Series

Flame-retardant ABS with pre-formed knockouts for M20/M25 cable glands. Cost-effective choice for indoor wiring points and control-panel junctions.

IP65400V75AABSKnockout optionEN 60670-1

View SHQ3 ABS Junction Box specifications

ABS plastic waterproof electronic junction box SHQ3 series
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IP65 Outdoor With Terminal Junction Box
Model : SHJK Series

PC housing with terminal-ready layout for outdoor wall-mount splice points. 750°C glow-wire rated with IP65 dust-tight sealing.

IP65400V75APCTerminal-readyClass II

View SHJK Terminal Junction Box specifications

IP65 outdoor terminal junction box SHJK series
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PC Plastic Waterproof Electronic Junction Box
Model : SHAG Series

UV-stabilized polycarbonate for full outdoor exposure. Higher impact strength with custom dimensions and knockout positions for OEM projects.

IP65400V75APCUV-resistantCustom size

View SHAG PC Junction Box specifications

PC plastic waterproof electronic junction box SHAG series

Hinged Lid & IP66 Weatherproof Junction Boxes

Heavy-Duty & External IP66 Enclosures

Technical Data

Junction Box Specifications & Parameters

Reference data for SELHOT weatherproof plastic junction boxes. Sizes from 100×100 mm to 630×830 mm with custom knockout positions, cable gland entries (M20/M25/M32) and terminal layouts available on request.

General Technical Parameters — Junction Box Series
ParameterSpecification
Housing MaterialUV-stabilized PC (polycarbonate) / flame-retardant ABS
Ingress ProtectionIP65 / IP66 (dust-tight, water-jet protected)
Impact ResistanceIK08 / IK09 (5 joule impact energy)
Flammability RatingUL94 V-0 / V-2; glow-wire 650–750°C
Insulation ClassClass II / double insulation
Rated VoltageUp to 400V AC (Ui 690V / 1000V on select models)
Rated Terminal CurrentUp to 75A
Operating Temperature-25°C to +80°C
Cover TypeScrew-down cover or hinged lid with seal gasket
Cable EntryPre-formed knockouts; M20/M25/M32 gland compatible
CertificationCE, RoHS, TUV; EN 60670-1 / DIN EN 60670-24
Customization

Our Customizable Options

Whether you need a standard IP66 hinged junction box or a fully customized electronic enclosure, SELHOT provides end-to-end OEM/ODM services — from arbitrary knockout drilling and cable gland placement to color matching and joint mold development.

SELHOT custom color junction box OEM — RAL grey blue and green ABS PC housings

Color

Match junction box shell colors to your brand or project palette. We support RAL color matching for ABS and PC housings — from standard grey (RAL 7035) to custom greens, blues and municipal colors for outdoor lighting and industrial control panels.

Custom color options ›
Applications

Application Scenarios

Six typical junction-box installs — splice housings, terminal-ready enclosures and hinged-lid cabinets — matched to the SHK, SHAG, SHJK and SHQ3 series that fit each duty, without padding the list to a fixed count.

Highly suitable — Engineered to exceed typical site hazards Suitable — Recommended for standard configurations Limited — Material selection or custom upgrades advised for extreme exposure
SELHOT SHAG junction boxes for industrial control and PLC panels Suitable

Industrial Control & PLC Panels

PLC modulesControl panelsFactory automation
SHAGSHKSHQ3

Spacious hinged-lid enclosures (100×100 to 630×830 mm) house PLC modules, relay boards and terminal blocks in factory automation. Integrated mounting pillars and gasket-sealed lids protect against dust ingress and washdown spray in production environments.

IP65/IP66Hinged lidMounting pillarsCustom knockout
View SHAG PC junction boxes
SELHOT SHK waterproof junction boxes in tunnel and underground systems Highly Suitable

Tunnels & Underground Systems

TunnelsSubwayUnderground wiring
SHKSHAG

Designed for high-condensation and high-moisture underground environments. IP66 hinged junction boxes deliver dust-tight sealing for ventilation control splices and lighting circuit junctions, with wide temperature tolerance from -25°C to +80°C.

IP66Humidity ≤100%-25°C to +80°CHinged access
View SHK IP66 series
SELHOT SHAG junction boxes for photovoltaic and solar combiner applications Highly Suitable

Photovoltaic & Solar Combiner

PhotovoltaicSolar combinerString wiring
SHAGSHJKSHK

UV-resistant PC junction boxes (SHAG) and terminal-ready models (SHJK) protect PV string splices and inverter wiring on rooftops and ground-mount arrays. Large SHK hinged enclosures accommodate combiner layouts with custom knockout positions for conduit and cable gland entries.

IP65/IP66UV-resistant PC400V / 75ACustom knockout
View outdoor IP66 junction boxes
SELHOT SHK IP66 junction boxes for outdoor EV charging infrastructure Suitable

EV Charging Infrastructure

EV chargingOutdoor pilesParking hubs
SHKSHAGSHJK

Weatherproof junction boxes protect feeder splices and control wiring at commercial EV charging hubs. IP66 hinged enclosures (SHK) withstand roadside exposure and washdown; pair with UKFA/B rotary isolators for safe AC disconnect during maintenance.

IP66IK09400VTerminal-ready
View SHJK terminal boxes
SELHOT SHAG junction boxes for instrument and sensor housing Suitable

Instrument & Sensor Housing

InstrumentsSensorsMeasurement
SHAGSHQ3SHJK

Compact electronic junction boxes protect sensitive instrumentation from dust and moisture in process plants and laboratories. Fixed-structure terminals (SHJK) ensure stable wire connections; SHQ3 knockout options allow flexible cable entry for field-mounted sensors and transmitters.

IP65Class II400V / 75AFixed terminals
View SHQ3 ABS enclosures
SELHOT SHAG junction boxes for telecommunications and data infrastructure Highly Suitable

Telecommunications & Data

TelecomData cabinetsNetwork splices
SHAGSHKSHJK

Large-format hinged junction boxes protect telecom splices, network equipment and low-voltage data wiring in outdoor cabinets. Sizes up to 630×830 mm accommodate multiple cable entries with custom M20/M25/M32 gland positions for structured cabling projects.

IP65/IP66630×830 mmCable glandHinged lid
View SHK hinged enclosures
Why SELHOT

Junction Box Manufacturer — SELHOT

SELHOT technical support icon
Technical Support
Over 20 years designing weatherproof plastic junction boxes and electrical enclosures to IEC 60529 standards. Our engineering team advises on IP rating, size selection and knockout layout for your project.
IEC 60529100–630 mm20+ Years
SELHOT quick response icon
Quick Response
We respect your timelines. Stock junction boxes ship within 15 days and samples are ready in just 3–5 days, keeping your control-panel and OEM projects on schedule.
3–5 Day Samples15-Day Dispatch
SELHOT quality certification icon
Outstanding Quality
Every junction box passes strict pre-shipment testing — high/low temperature, waterproof (IPX5/IPX6) and dust ingress — and carries CE, RoHS and TUV international certification.
CERoHSTUVIP66 Tested
SELHOT certified production icon
Certified Production
Production is monitored at every stage under an ISO 9001 quality system, across a 20,000 m² plant with 37 injection-molding machines and 22 dedicated test stations.
ISO 900137 Molding Lines22 Test Stations
Quality & Compliance

Certifications & Quality Testing

SELHOT junction boxes are independently certified and validated through a full in-house test regime before every shipment.

High & low temperature cycling (-25°C to +85°C)
IP waterproof spray & jet testing (IPX5 / IPX6)
Dust ingress chamber testing (IP6X)
IK08 mechanical impact testing
UV aging & weather resistance
Flammability / glow-wire (UL94 V-0)
Insulation resistance & dielectric strength
Salt spray corrosion (marine grades)

Weatherproof Junction Box Frequently Asked Questions

Q
What sizes of plastic junction boxes do you offer?

Our SHK hinged-lid series covers standard dimensions from 100×150×90 mm up to 630×830×280 mm. SHAG, SHJK and SHQ3 electronic junction boxes are available in multiple compact sizes with custom L×W×H engineering on request for OEM projects.

Q
Can you customize knockout holes and cable gland entries?

Yes. We offer arbitrary knockout hole design, pre-drilled gland plate layouts and rubber-plug options on SHQ3 and SHK series. Cable gland sizes M20, M25 and M32 are supported. Factory pre-drilling to your conduit schedule saves on-site labor.

Q
Which material should I choose — PC or ABS?

Choose UV-stabilized PC (SHAG) for outdoor, solar and marine environments where sunlight, impact and weather exposure are high. ABS (SHQ3) is a cost-effective option for indoor or shaded outdoor installations. We can advise on the best material once we know your site conditions.

Q
What is the difference between IP65 and IP66 junction boxes?

Both are fully dust-tight per IEC 60529. IP65 protects against low-pressure water jets, suiting general outdoor and control-panel installs. IP66 adds protection against powerful high-pressure jets — recommended for marine, washdown and high-exposure rooftop applications.

Q
Do your junction boxes come with terminal blocks?

SHJK and SHQ3 series feature fixed-structure internal terminals rated up to 75A at 400V. SHK hinged enclosures provide mounting pillars for user-installed terminal blocks, DIN-rail accessories and control modules. Pre-wired terminal configurations are available as OEM options.

Q
Which certifications do your junction boxes carry?

Our junction boxes comply with EN 60670-1 and DIN EN 60670-24, and carry CE, RoHS and TUV certification. Production is managed under an ISO 9001 quality system. Test reports for IP, IK and flammability can be provided for import and project approval.

Q
What are your sample and delivery lead times?

Samples are typically ready in 3–5 days. Stock items ship within 15 days; lead times for large or fully customized orders are confirmed at quotation based on volume and tooling.

Q
What is your MOQ and do you support OEM/ODM?

MOQ depends on the model and level of customization and is confirmed at quotation. We support both OEM and ODM, including custom branding, packaging, knockout drilling and mold development for distributors and project buyers.

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