SOLAR · ENERGY STORAGE · INDUSTRIAL
Connector Selection Guide for Solar, Energy Storage & Outdoor Systems
Compare nine product families by application, voltage, current, cable size, environmental protection, and installation method.
9 product families
One practical selection guide
EXPLORE BY PRODUCT FAMILY
Compare Our Connector Solutions
Start with the system location and connection type. Then compare voltage, current, wire size, cable outside diameter, pole count, IP protection, mounting method, and certification requirements.
01
Push Wire Connectors
Fast, tool-free wire termination for combiner boxes, control cabinets, junction boxes, lighting equipment, and internal equipment wiring.
- Solid or stranded conductor
- Wire cross-section and connection points
- Rated voltage, current, and temperature
02
Energy Storage Connectors
High-current DC connection solutions for battery packs, battery racks, inverters, and power conversion systems.
- Maximum system voltage and continuous current
- Cable cross-section and terminal size
- Touch protection, keying, and locking method
03
MC4 and PV4 Solar Connectors
Weather-resistant DC connectors for solar modules, string cables, combiner boxes, extensions, and inverter connections.
- System voltage and rated current
- PV cable cross-section and outside diameter
- Approved mating interface and certification
04
Threaded Waterproof Connectors
Secure screw-coupled connectors for permanent outdoor power and equipment connections exposed to water, dust, or vibration.
- Pole count, voltage, and current
- Cable outside diameter
- Inline or panel mounting and IP rating
05
LP Series Industrial Waterproof Connectors
Rugged circular connectors for industrial power, outdoor lighting, automation, machinery, and electrical equipment.
- Power or signal application and pole count
- Rated current and cable diameter
- Panel or cable mounting and mating cycles
06
Male and Female Connectors
Matched plug-and-socket pairs for detachable cable-to-cable and cable-to-equipment power or signal connections.
- Pin or pole count and mounting arrangement
- Cable cross-section and polarity
- Keying, locking, and waterproof requirements
07
Waterproof Junction Boxes
Protected enclosures for outdoor cable branching, splicing, terminal distribution, and equipment connections.
- Number of cable entries and terminal type
- Enclosure size and cable gland range
- Rated current, IP rating, and mounting method
08
Screw-Free Waterproof Connectors
Quick-install waterproof connectors for field wiring, maintenance, and applications where installation speed matters.
- Wire size, conductor type, and pole count
- Rated voltage and current
- Cable diameter, reusability, and IP rating
09
Industrial Circular Signal Connectors
Compact multi-pin connectors for sensors, encoders, communication lines, automation equipment, and industrial control signals.
- Pin count and signal or protocol type
- Shielding and connector size
- Cable or panel mounting and IP rating
SELECTION CRITERIA
What to Check Before Selecting a Connector
A reliable connector must fit the complete system, not just a single voltage or current value. Confirm these four areas before ordering.
Application and location
Identify whether the connection is used at a PV module, string cable, inverter, battery pack, equipment enclosure, or outdoor field device.
Electrical and cable data
Confirm maximum system voltage, continuous current, cable cross-section, conductor type, and cable outside diameter.
Environmental conditions
Consider water, dust, UV exposure, vibration, chemicals, temperature range, installation orientation, and expected mating cycles.
Compatibility and certification
Verify the mating interface, contacts, seals, approved tooling, and applicable IEC, TÜV, UL, or project-specific requirements.
QUICK COMPARISON
Connector Selection by Application
| Application | Check First | Recommended Product Family |
|---|---|---|
| Residential rooftop PV | Voltage, current, cable size, compatibility, weather resistance | MC4 & PV4 solar connectors |
| Commercial and utility PV | DC rating, current, cable range, tooling, certification | MC4 & PV4 solar connectors |
| Battery energy storage | Current, voltage, terminal size, locking, touch protection | Energy storage connectors |
| Outdoor industrial equipment | Pole count, cable OD, IP rating, mounting method | LP Series waterproof connectors |
HOW TO SELECT
How Our Connector Selection Process Works
01
Share your application
Tell us where the connector will be used and describe the operating environment.
02
Confirm the specifications
Provide voltage, current, cable size, interface, IP rating, certification, and quantity.
03
Receive a recommendation
Review the suggested product family, drawings, datasheets, samples, and quotation.
FREQUENTLY ASKED QUESTIONS
Connector Selection FAQs
Practical answers for selecting solar PV, battery energy storage, waterproof power, internal wiring, and industrial signal connectors.
Ask Our Engineers →01How do I choose the correct connector family?
Start with the application and connection location. Use MC4 or PV4 connectors for solar DC cables, energy storage connectors for battery power, waterproof connectors for outdoor equipment, push wire connectors for internal wiring, and circular connectors for signals.
02What information should I provide for a connector recommendation?
Provide the application, maximum voltage, continuous current, cable cross-section, cable outside diameter, conductor type, pole count, mounting method, environmental conditions, certification, and quantity.
03What is the difference between a PV connector and an energy storage connector?
PV connectors are designed for solar module and string cable connections. Energy storage connectors are intended for battery packs, battery racks, inverters, and other high-current DC connections.
04How do I choose between threaded and screw-free waterproof connectors?
Choose threaded connectors when secure mechanical locking and vibration resistance are priorities. Screw-free connectors are more suitable for fast field installation and easy maintenance.
05What is the difference between cable cross-section and cable outside diameter?
Cable cross-section refers to conductor size. Cable outside diameter includes the insulation and determines whether the cable fits the seal.
06Can connectors from different manufacturers be mated together?
Do not assume similarly shaped connectors are interchangeable. Use a verified and approved connector pair.
07Does the IP rating apply when the connector is unmated?
Not always. Many connectors achieve their stated protection only when correctly assembled, fully mated, and used with a compatible cable diameter.
