FAQ

Low voltage switchgear assemblies (0.4kV): Rated voltage AC 380V/400V, rated current 630A-6300A, suitable for power distribution in residential areas, factories, and commercial buildings (compliant with IEC 60439-1 standard).

Medium voltage switchgear assemblies (10kV/24kV): Rated voltage AC 10kV/24kV, rated current 630A-2500A, suitable for power transmission and distribution in industrial parks and power plants (compliant with IEC 62271-200 standard).

Customized products with special voltages/currents such as 6kV and 35kV are available.

Yes. It adopts universal mounting holes and a modular structure, fully compatible with international brands such as Siemens, ABB, Schneider Electric, and Mitsubishi, as well as well-known domestic brands such as Chint and Delixi; the internal layout can be customized according to the customer's specified component models.

Basic protection functions: overload, short circuit, leakage current, overvoltage, and undervoltage protection.

Optional intelligent monitoring module: supports real-time monitoring of voltage, current, power, temperature, and humidity; fault alarms; remote control (4G/WiFi/LoRa communication); and can be integrated with the customer's existing monitoring system.

Yes, customization is Shangming's core advantage. We support the following customization options:

Electrical parameter customization: rated voltage, current, short-circuit breaking current, protection level (IP30-IP65).

Internal configuration customization: component brand selection, wiring scheme, protection function combination, intelligent monitoring module installation.

Structural customization: cabinet dimensions, color, installation method (floor-mounted/embedded), cabinet door layout.

Process: Customer provides drawings or technical specifications → Engineering team reviews feasibility within 2 working days → Quotation and sample confirmation (if required) → Mass production.

Minimum Order Quantity (MOQ): 3 units (negotiable for larger projects).

Customization Lead Time:

Samples (1-2 units): 10-15 working days.

Small Batch (3-10 units): 15-20 working days.

Large Batch (≥10 units): 20-25 working days (Rush orders can be shortened to 15-20 working days, but a rush fee applies).

There is no minimum order quantity for standard complete electrical systems; you can order as little as one unit. For in-stock products, delivery will be within 5-7 business days after payment. For products not in stock, the delivery time is 10-15 business days.

The products have passed CE (EU) and other international certifications, and comply with IEC (International Electrotechnical Commission), ANSI (USA), BS (UK), DIN (Germany), AS/NZS (Australia/New Zealand) standards.

Please inform us of your target market before placing an order, and we can provide products and certification documents that meet local standards.

Yes. Complete documentation is provided for each order.

Export standard packaging is used: the container is first wrapped with EPE foam, then placed in a moisture-proof plastic bag, and finally packed into a fumigated wooden crate (compliant with ISPM 15 standards). The inside of the crate is filled with foam for fixation, and the outside is reinforced with steel straps.

Core components (such as circuit breakers) are individually packaged with anti-static material to ensure no collision or moisture damage during transportation.

We support FOB, CIF, CFR, EXW, DAP, DDP, and other trade terms. The default ports of shipment are Ningbo and Shanghai, but other ports can be adjusted according to customer requirements.

Yes. Each order comes with complete technical documentation, including an installation manual, wiring diagrams, a parts list, a maintenance guide, and cabinet drawings (DWG/PDF format) to facilitate on-site installation and commissioning.

We support two methods:

Remote Support: Free online guidance (video call, WeChat, email), response time ≤ 4 hours during working hours.

On-site Support: For large projects of ≥ 50 units, we can dispatch engineers to the site for installation and commissioning (service fees and travel expenses are borne by the customer). Our engineers have overseas project service experience (covering Europe, Southeast Asia, Africa, etc.).

Optional intelligent monitoring modules support:

Monitoring parameters: Voltage, current, power, power factor, temperature, humidity, fault alarms.

Communication protocols: Modbus RTU, TCP/IP, 4G/WiFi/LoRa.

Remote control: Switch on/off, parameter settings (mobile APP/computer client).

Compatibility: Can be integrated with existing customer monitoring systems.

We support wire transfer (T/T): 30% prepayment, 70% balance before shipment.

Yes. The standard sample fee is 1.5 times the bulk price. Customized sample fees are calculated based on technical complexity (including design fees + component fees + processing fees).

For subsequent bulk orders ≥ MOQ, the sample fee can be fully deducted.

Sample delivery time is 10-15 working days.

You will be assigned a dedicated account manager. After order confirmation, we will provide a production schedule (including material procurement, component assembly, testing, and packaging). During production, we will send progress photos/videos every 3-5 business days. Before shipment, you will be informed of the logistics tracking number. We offer 24-hour response to inquiries.

The warranty period is 1 year (customized products) and 2 years (standard products). The warranty covers cabinet material defects, component failures (under normal use), and manufacturing defects.

Damage caused by improper installation, misuse, natural disasters, or unauthorized modifications is not covered by the warranty.

Customer reports the problem (providing photos/videos of the malfunction and order number) → Technical team responds within 4 hours → Remote diagnostics (free guidance on adjusting parameters or replacing small components; free replacement parts shipped within the warranty period) → If the problem cannot be resolved, an engineer will be arranged for on-site handling or the product will be returned for repair/replacement (costs within the warranty period will be borne by us); in emergencies, replacement products can be provided first to minimize customer losses.