Import 360v Solar Controller 120a Solar Regulator — Buy in wholesale FOB from Supplier in China

Zhejiang Sandi Electric's 360V solar charge controller is a 120 ampere PWM regulator designed for off-grid photovoltaic power stations with 360 volt nominal battery banks. The unit uses a 32-bit digital control processor with a three-stage charging algorithm: buck, equalise, and float. IGBT modular architecture handles the power switching, while a fully enclosed duct with high-speed forced-air cooling allows operation in harsh ambient conditions. The controller integrates voltage-loop and current-loop double-loop control, permitting user-configured charging current limits through a colour LCD touchscreen interface with multi-language support.

The PID (proportional-integral-derivative) battery energy management algorithm claims to improve battery efficiency by at least 45 percent compared to conventional controllers, while multi-stage charging technology targets a 35 percent battery life extension. Power generation statistics and real-time power curve monitoring are logged internally. Temperature compensation and an RTC (real-time clock) adjust charging parameters seasonally. Optional functions include RS-485 or GPRS communication via standard Modbus protocol for remote monitoring, and a patented secondary protection circuit against overcharging due to main power switch failure. The controller is strictly for solar module input; connecting other charging sources voids warranty and risks permanent damage.

This regulator suits off-grid solar installations in remote telecom, rural electrification, industrial backup, and large residential battery systems where 360V battery configurations are standard. The 120A capacity implies a maximum array power handling of approximately 43.2 kW at 360V, though actual sizing depends on local irradiance and temperature coefficients. Buyers should confirm the exact operating ambient temperature range, IP environmental rating, and whether the Modbus or GPRS communication module is included or purchased separately. The supplier's voltage series spans 48V through 600V, so verify that the ordered unit is factory-configured for 360V rather than field-selectable, as misconfiguration can damage connected battery banks.

Zhejiang Sandi Electric Co., Ltd. is headquartered at Building 13-2 Botong Huigu, No. 66 Binhai South Four Road, Yueqing Economic Development Zone, Yueqing City, Zhejiang Province, 325600, China. Yueqing is a recognised cluster for low-voltage electrical equipment manufacturing in China, giving the supplier access to component ecosystems for IGBT modules, capacitors, and magnetic components. The trust tier on this listing is harbour, with a response rate of 0.00 and no recorded average response hours, so buyers should not assume rapid technical support turnaround without direct confirmation.

The company specialises in solar charge controllers across a broad voltage range from 48V to 600V, indicating design capability rather than single-product manufacture. No information is provided about factory size, annual production volume, ISO certifications, number of employees, years established, or client references. The source description mentions EMC design excellence and patent holdings, but no patent numbers, EMC test reports, or certification bodies are named. Buyers should request copies of ISO 9001, ISO 14001, or product-specific certifications such as CE, IEC 62109, or UL 1741, and verify that the certificates are current and cover the exact model being purchased.