About Zhejiang Huapu Explosion-Proof Electric Co., Ltd. - Electrical Converters & Switches Supplier in China

Zhejiang Huapu Explosion-Proof Electric Co., Ltd. is based in China and lists 12 active products covering converters, inverters, switches, temperature controllers, and sensors. The catalogue includes a 300 W 12 V to 230 V modified power inverter (HS 8504.40) built with a copper‑aluminum hybrid transformer, as well as a knife‑switch fuse (HS 8535.10) featuring ceramic housing and 99.9 % copper contacts. Additional items comprise programmable digital timer switches, analog voltmeters, magnetic level float switches, three‑phase timer switches, digital temperature controllers, programmable socket plugs, inductive proximity switches and sensors, and a 12 V solid‑state relay. The product set spans both AC/DC conversion equipment and various control and sensing components used in industrial and agricultural settings.

The listed categories are identified in the supplier’s top categories as Converters & Switches, DC/AC Inverters & Converters, Agriculture, Temperature Controllers & Indicators, Electric Sockets & Plugs, and Electric Sensors. Materials noted include copper transformer windings, aluminum heat sinks, PC/ABS housings, ceramic fuse housings, and silver fuse elements. The HS codes fall under chapter 85, which covers electrical machinery and equipment, specifically 8504 for transformers and 8535 for fuse assemblies. The range reflects typical explosion‑proof design considerations for hazardous environments, though the catalogue does not specify certification status.

Product Range and Specialties of Zhejiang Huapu Explosion-Proof Electric Co., Ltd.

The catalogue offers a 300 W 12 V‑to‑230 V modified inverter that conforms to IEC 62040 efficiency classes and IEC 60950 safety requirements, with a copper‑aluminum hybrid core that balances conductivity and weight. Timer switches such as the Thc‑15a 220 V programmable unit and the Kg317t three‑phase 380 V timer are built to IEC 60730 and IEC 60947‑5‑1 standards, providing adjustable on/off intervals for industrial control. Temperature controllers like the Stc‑1000 typically meet IEC 60730 accuracy of ±1 °C over a - 50 °C to +150 °C range, while the M8 and M12 inductive proximity switches follow IEC 60947‑5‑2 with IP65 protection and sensing distances of 3 - 10 mm. The fuse type knife switch is classified under IEC 60269 (HRC type) and uses high‑purity copper contacts and a silver fuse element for reliable over‑current protection. These specifications align with common buyer expectations for durability, safety, and performance in hazardous or agricultural environments.

Trade and Export Information - Zhejiang Huapu Explosion-Proof Electric Co., Ltd.

China is a major exporter of electrical equipment under HS chapter 85, supplying Europe, North America, Southeast Asia and the Middle East. Buyers of converters, switches and sensors typically require CE marking, IECEx or ATEX certification for explosion‑proof use, and RoHS compliance for hazardous‑substance restrictions. The 300 W inverter (HS 8504.40) and the fuse assembly (HS 8535.10) are subject to customs duties based on their transformer and fuse classifications, and most shipments are packed on wooden pallets within 20‑ft or 40‑ft containers, with moisture‑controlled cartons for electronic components. Export documentation from China often includes a commercial invoice, packing list, certificate of origin, and where required, an export license for equipment that could be used in hazardous applications.

Sourcing from Zhejiang Huapu Explosion-Proof Electric Co., Ltd. - Buyer Guidance

When sourcing from this supplier, request the CE Declaration of Conformity and an IECEx test report for any explosion‑proof items such as the inverter and the knife‑switch fuse. Verify material certificates for copper purity (99.9 %) and ask for RoHS compliance statements to ensure no prohibited substances. Obtain product data sheets that list voltage ratings, current capacity, IP protection levels and performance curves, and confirm sample testing before confirming bulk orders.

What electrical standards apply to the 300 W inverter?

The inverter is designed to meet IEC 62040 for uninterruptible power supplies and IEC 60950 for safety of information technology equipment. Buyers should request the CE Declaration of Conformity and an IECEx test report for explosion‑proof use.

How is the knife‑switch fuse constructed and what rating is typical?

The fuse uses a ceramic housing with electrolytic copper contacts of 99.9 % purity and a silver fuse element, classified under IEC 60269 (HRC type). The catalogue does not list a specific current rating, so buyers should ask for the rated current and voltage.

What are the common specifications for the analog inductive proximity switches (M8, M12)?

Both switches conform to IEC 60947‑5‑2, offer a sensing distance of 3 - 10 mm depending on the model, and are typically IP65 rated for dust and water protection. Buyers should verify the switching voltage, load current and supply voltage in the datasheet.

Which certifications are usually required for the digital temperature controller (STC‑1000)?

Temperature controllers for industrial use normally need CE marking, IECEx or ATEX certification for hazardous areas, and RoHS compliance. Request the test report, calibration certificate and the operating temperature range (usually - 50 °C to +150 °C).

How are the programmable timer sockets packaged for export?

Suppliers commonly pack each socket plug in an individual anti‑static poly‑bag, then place 50 - 100 units on a wooden pallet wrapped in stretch film, suitable for 20‑ft or 40‑ft container loading. Verify the packaging list and carton dimensions before shipment.

What documentation should a buyer request before placing an order for the solid‑state relay?

Request the product data sheet, IEC 60730 compliance certificate, RoHS declaration and a sample performance test report showing load current (40 A) and switching speed. Confirm the relay’s voltage rating (12 V DC input) and isolation class.

Are there any special export restrictions for explosion‑proof electrical equipment from China?

China applies export control for items that can be used in hazardous or defense‑related applications; buyers should ensure the end‑use declaration complies with Chinese export regulations and that the equipment holds the necessary IECEx or ATEX certificates for the destination market.