If you’re attending The Smarter E India 2026 and evaluating solar connectors suppliers, here’s what you’ll find at the OX Connections booth—and why it might be worth a stop.
We’re showcasing our complete solar connector portfolio at Hall 8, Booth W141, February 25-27, 2026. Unlike many exhibitors representing overseas manufacturers, we stock these connectors in India. That means you can discuss specifications at our booth and potentially have product dispatched within days, not months.
Our display focuses on three connector families that address different requirements across solar installations: MC4 connectors for panel-to-panel connections, M25 circular connectors for inverter and combiner box applications, and M20 connectors for compact installations where space constraints matter.
MC4 Solar Connectors We’re Displaying
MC4 connectors remain the global standard for solar panel connections. At our booth, we’re showcasing:
MC4 Connector Pairs: Male and female connectors with proper tin-plated copper contacts and UV-stabilized housing. Rated IP67 when mated, suitable for outdoor installations exposed to monsoon conditions and temperature cycling.
MC4 Y-Branch Connectors: Enable series and parallel panel configurations. Essential for string optimization and system expansion. Available in 1-to-2 and 1-to-3 configurations.
MC4 Extension Cables: Pre-assembled cables in various lengths with factory-crimped MC4 connectors. Eliminates field crimping requirements and ensures consistent connection quality.
Technical Specifications:
| Parameter | Specification |
| Voltage rating | 1000V DC / 1500V DC options |
| Current rating | 30A continuous |
| Contact material | Tin-plated copper |
| Housing | UV-stabilized PPO |
| IP rating | IP67 when properly mated |
| Temperature range | -40°C to +90°C |
Our MC4 connectors carry TÜV certification and meet IEC standards. We’ve supplied lakhs of MC4 connectors to solar panel manufacturers and inverter OEMs across India over the past several years, with zero rejections reported to OX Connections to date—reflecting consistent quality control.
M25 Circular Connectors for Solar Applications
While MC4 handles panel connections, solar installations require additional connection points at inverters, combiner boxes, and monitoring systems. M25 circular connectors address these requirements with robust construction and higher current capacity.
M25 Panel Mount Connectors: Available in 2-12 pin configurations. Used for inverter DC input connections, combiner box wiring, and power distribution where waterproof panel penetrations are required.
M25 Cable Connectors: Mating counterparts for panel-mount versions. Threaded coupling nut provides secure mechanical lock and environmental sealing.
Applications in Solar Systems:
- String inverter DC input connections
- Central inverter wiring (multiple string inputs)
- Combiner box internal distribution
- Monitoring system power and signal connections
- Energy storage system DC connections
M25 connectors provide IP68 rating when properly installed, suitable for outdoor enclosures and rooftop installations where moisture ingress prevention is critical.
M20 Connectors for Compact Solar Installations
M20 circular connectors offer similar functionality to M25 in a smaller form factor. For residential installations, rooftop systems, and applications where panel space is constrained, M20 connectors provide:
Reduced Panel Footprint: 20mm mounting diameter versus 25mm, enabling more compact enclosure designs.
2-8 Pin Configurations: Adequate for most residential inverter and monitoring system requirements while maintaining compact size.
Applications: Residential inverter connections, microinverter wiring, rooftop monitoring systems, compact combiner boxes, and string-level monitoring and optimization devices.
Both M20 and M25 series include straight and right-angle cable options for different cable routing requirements.
Why Solar Connector Quality Matters
Solar installations carry 25-year panel warranties and 10-15 year inverter warranties. Connector failures during warranty periods create service costs that typically far exceed initial component savings. Poor contact quality can lead to increased resistance, heat generation, and eventual connection failure.
The economics are straightforward: a quality MC4 connector pair might cost ₹50-80 more than substandard alternatives. A single warranty service call for failed connectors can cost ₹15,000-25,000 in technician time, travel, and replacement parts. For panel manufacturers and EPC contractors, connector quality is warranty risk management.
Our connector supply includes complete certification documentation—TÜV certificates, test reports, IEC compliance declarations. This documentation supports quality management systems and provides protection when warranty questions arise.
Why Visit the OX Connections Booth?
Ex-Stock India Availability: We maintain inventory of MC4, M25, and M20 connectors in our 20,000+ sq ft warehouse for immediate dispatch. While many suppliers quote 12-16 week import lead times, we typically ship within days of order confirmation.
Flexible MOQ: Whether you need 500 pieces for a pilot project or 50,000 for production runs, we accommodate varying order sizes. No rigid minimums that force you to overstock.
Quality Consistency: Our connectors come from manufacturers meeting international standards. Consistent quality across production batches eliminates variables that create field reliability issues.
Certification Documentation: Complete documentation package with every order—certificates, test reports, compliance declarations supporting your quality systems and customer requirements.
Technical Support: Our team provides application guidance for connector selection, installation requirements, and specification matching to project needs.
Applications Across Solar Installations
| Installation Type | MC4 Use | M25 Use | M20 Use |
| Utility-Scale Solar Farms | String connections | Inverter connections | Monitoring systems |
| Commercial Rooftop | Panel connections | Inverter/combiner box | Monitoring/optimization |
| Residential | Panel interconnections | Inverter DC connections | Rapid shutdown systems |
| Energy Storage | Panel connections | Battery-inverter DC links | Control systems |
Frequently Asked Questions
Q: Can I get samples at the booth?
A: Yes. We’ll have sample kits available for evaluation. For larger sample quantities or specific configurations, we can arrange dispatch from our warehouse—typically within 2-3 days.
Q: What certifications can you provide?
A: TÜV certificates, IEC compliance declarations, and test reports. We’ll have certification documentation at the booth, and complete packages accompany every order.
Q: What if I can’t attend the event?
A: Email us at [email protected] with subject “Smart Energy 2025 – Sample Request” and we’ll send samples and documentation directly. No booth visit required.
Visit Us at The Smarter E India 2025
Location: Hall 8, Booth W141
Dates: February 25-27, 2026
Venue: India Expo Centre, Greater Noida
At Our Booth:
- Complete MC4, M25, and M20 product display
- Technical specifications and certification documentation
- Application guidance from our engineering team
- Sample kits for evaluation
- Stock availability information for immediate project requirements
Whether you’re a solar panel manufacturer, EPC contractor, inverter OEM, or system integrator, visit our booth to discuss your connector requirements. Our team can provide technical recommendations, specification matching, and availability confirmation for your upcoming projects.