MC4PERC
JA Solar undefined JAM60S21-370/MR

JA Solar • ja solar jam60s21-365-390mr

JAM60S21-370/MR370W

PERC
Region:Poland
Region shows where the seller or factory is located. Most ship globally, and all listed suppliers should be able to ship to your current location.
370W
Power Output
19.9%
Efficiency
1769 x 1052
Dimensions (mm)
12 Yrs
Product Warranty
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Key Features

  • Lower output power loss
  • Lower LCOE
  • Lower shading and lower resistive loss
  • Better mechanical loading tolerance

JA Solar JAM60S21-370/MR Panels: What Your System Looks Like

Based on a standard 10kW residential installation

10kW System Size
28 Panels
Estimated Roof Area
560 sq.ft. (52 m²)
Avg. Yearly Production
11,500 kWh
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Electrical Data (STC)

Maximum Power (Pmax)370 W
Module Efficiency19.9 %
Voltage at Pmax (Vmp)34.23 V
Current at Pmax (Imp)10.81 A
Open Circuit Voltage (Voc)41.3 V
Short Circuit Current (Isc)11.35 A

Mechanical Data

Dimensions1769 x 1052 x 30 mm
Weight18.8 kg
Cell TypeMC4
Number of Cells120
Front Glass3.2 mm
Frame

Temperature Ratings

Temperature Coefficient of Pmax-0.35 %/°C
Temperature Coefficient of Voc-0.26 %/°C
Temperature Coefficient of Isc0.05 %/°C
Operating Temperature Range-40 - 85 °C

Similar Products

1052 x 1769 mm
Roof Fit Tool

Will These Panels Fit Your Roof?

Don’t guess your solar potential. Our Roof Layout Designer uses the exact dimensions of the JA Solar JAM60S21-370/MR (370W modules) to map out your system. Visually plan your array to see exactly how many modules your roof can support based on its specific footprint.

Precision Layout Preview: See exactly how the 370W modules sit on your roof.
Accurate Technical Spacing: Factors in real-world gaps and mounting rails.
Instant System Sizing: Automatically calculates total kW output for this specific panel.
Optimization Tips: Suggestions to maximize your roof’s energy density.
Map This Panel on My Roof

Ideal Use Case

The JA Solar JAM60S21-370/MR is designed for specific solar energy applications. This panel is an excellent choice if you:

Build a standard residential 370W system
Balance efficiency with cost-effectiveness
Want proven monocrystalline technology for better performance
Build modern residential installations

Don’t guess your solar setup — calculate it first!

Take our Solar Quiz to get a personalized recommendation for panels, inverter, battery capacity, and system size — before you spend money on the wrong setup.

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Product FAQ

How many JA Solar JAM60S21-370/MR panels do I need for my home?

The number of panels depends on your energy consumption and roof area. At 370W per panel, a typical 10kW residential system requires about 28 modules. Use our Solar Roof Calculator to get a precise layout based on your actual roof dimensions.

What is the efficiency of JA Solar JAM60S21-370/MR?

This panel has an efficiency of 19.9%, using PERC cell technology. Higher efficiency means more electricity per square meter, which is especially valuable when roof space is limited.

What are the dimensions of the JA Solar JAM60S21-370/MR?

The module dimensions are 1769mm × 1052mm × 30mm. Always account for these measurements plus fire setbacks and mounting clearances when planning your solar layout.

Is JA Solar JAM60S21-370/MR compatible with standard inverters?

Yes, these panels work with most string and hybrid inverters. However, you must check the Voc (Open Circuit Voltage) and Imp (Current at Max Power) against your inverter's MPPT specs.

What warranty does the JA Solar JAM60S21-370/MR come with?

This panel includes a 12-year product warranty from JA Solar. Solar panels typically degrade about 0.4–0.5% per year, meaning this module should retain over 87% of its original output after 30 years.