320W MC4 Polycrystalline Solar Panel — Reliable Poly PV Module for Residential & Commercial

The JYINS 320W MC4 Polycrystalline Solar Panel offers proven reliability and cost-effective solar power generation for residential, commercial, and off-grid installations. Featuring 72 high-efficiency polycrystalline silicon cells with MC4-compatible connectors, it delivers consistent performance with excellent low-light response. The corrosion-resistant anodized aluminum frame and IP65 junction box ensure decades of durable outdoor operation. Ideal for budget-conscious solar projects without compromising on quality or warranty coverage.

Brand:

Jyins

Appurtenance:

320w mc4 polycrystalline solar panel reliable poly pv module for residential commercial-2

Product Description

Parameter	Specification
Model	LS-P320M
Maximum Power (Pmax)	320W
Module Efficiency	16.5%
Cell Type	Polycrystalline Silicon (72 Cells)
Maximum Power Voltage (Vmp)	37.2V
Maximum Power Current (Imp)	8.60A
Open Circuit Voltage (Voc)	45.5V
Short Circuit Current (Isc)	9.15A
Power Tolerance	0 ~ +5W (Positive Tolerance Only)
Front Glass	3.2mm High-Transmission Tempered Glass
Frame	Silver Anodized Aluminum Alloy
Junction Box	IP65 Rated with MC4 Compatible Connectors
Connector Type	MC4 Compatible
Output Cables	4.0 mm², Length 900mm
Dimensions	1956 x 992 x 40 mm
Weight	22.5 kg
Max System Voltage	1000V DC
Warranty	10-Year Product / 25-Year Linear Power

Performance Advantages

Proven polycrystalline technology — mature, reliable cell technology with decades of field performance history
Positive power tolerance (0~+5W) — every panel guaranteed to meet or exceed rated power, never below
72-cell high-voltage design — optimized for grid-tied string inverters with higher MPPT voltage range
MC4 compatible connectors — industry-standard quick-connect system for fast, reliable field installation
IP65 junction box with bypass diodes — minimizes power loss from partial shading and prevents hot spots
Corrosion-resistant aluminum frame — rated for high wind (2400Pa) and snow load (5400Pa)
Excellent low-light performance — polycrystalline cells maintain better output in cloudy and diffuse light conditions

Application Scenarios

Residential Rooftop Solar — Affordable high-power panels for grid-tied home solar systems
Commercial Solar Installations — Cost-effective PV for warehouses, factories, and office buildings
Solar Farms — Utility-scale ground-mount installations with competitive LCOE
Off-Grid Home Systems — Reliable power for remote homes with battery storage
Agricultural Solar — Barn, greenhouse, and farm building rooftop installations
Solar Water Pumping — Dedicated PV arrays for irrigation and livestock water systems

Why Choose JYINS

Zhejiang Jingying (JYINS) Electrical Co., Ltd., established in 1993, is a leading manufacturer with over 30 years of expertise in power inverters, solar charge controllers, energy storage systems, and renewable energy solutions. Our 500+ employee factory in Wenzhou, China, serves clients across 50+ countries with ISO9001/CE/SAA/RoHS certified products.

30+ years of manufacturing excellence since 1993
ISO9001, ISO14001, ISO45001, CE, SAA, RoHS, FCC certified
Dedicated R&D center with 30+ national patents
OEM/ODM services with flexible MOQ and fast prototyping (7-10 days samples)
Export to 50+ countries across 6 continents
Professional pre-sales engineering support and after-sales service

Frequently Asked Questions (FAQ)

Q: Poly vs Mono — which should I choose?

A: Poly panels are 10-15% cheaper per watt and perform better in hot/cloudy conditions. Mono panels are more efficient (use less roof space). Choose poly for budget projects and mono for space-constrained roofs.

Q: How many panels for a 5kW system?

A: 16 panels (16 x 320W = 5,120W). Array requires approximately 32 m² of roof space. Compatible with most 5kW single-phase string inverters.

Q: Are MC4 connectors included?

A: Yes, each panel comes with pre-attached MC4 compatible cables and connectors for simple series connection between panels.

Q: Can these be used with microinverters?

A: Yes, 320W poly panels work with most microinverters rated for 60-cell or 72-cell modules. Check microinverter specifications for voltage and current compatibility.

Hisolar (Zhejiang JYINS Electrical Co., LTD.),specializing in the production of power inverters, hybrid solar inverter, customized inverter PCB boards, and other clean energy solutions.