China ZHENGRONG Zh-3 Flow Switches Manufacturer, Supplier, Factory

Surge protective device (SPD) is a device used to protect electrical equipment and systems from overvoltage transients. 220-385v surge protective device can quickly limit the overvoltage to a safe range in case of transient overvoltage caused by lightning stroke, switch operation, start and stop of large electrical equipment in the power system, so as to protect the safe operation of electrical equipment.

This track type fuse holder can reduce the chance of electrical spikes overwhelming solar circuits. When used in conjunction with NH1, 2, and 3 fuses, the 250A 1000VDC Photovoltaic Base can effectively protect the combiner box, inverter voltage, and overcurrent effects. If the fuse is blown, it can be removed from the 250A 1000VDC Photovoltaic Base using appropriate tools and replaced with a new fuse, without the need to replace the 250A 1000VDC Photovoltaic Base, effectively saving costs.

Zhenghao 24V 10A Insulation Surge Protection is lightning protection in the field of process measurement and control, and provides signal protection for field equipment such as transmitter, thermal resistance, solenoid valve, flowmeter, valve positioner, frequency converter, etc.
Surge protection for i/o of control systems such as AI, Ao, Di, do and Pi of 24V 10A Insulation Surge Protection PLC. DCS。 It is widely used in petroleum, chemical industry, natural gas, environmental protection, new energy and other industries.

It is our honor to introduce this flagship product of Zhenghao to you. 160A 500V Fuse Holder is the support structure of the fuse, its main function is to fix the fuse, to prevent it from moving or damage when the circuit is interrupted. The base is usually composed of a plastic-pressed shell, contacts and fusible parts, which can be composed of a polyphase structure and is suitable for various electrical lines as the support parts of the fuse body.

This float switch features a large circular design with a 2m、3m、5m、10m，IP68 protection grade,and operates at temperatures from 0℃ to 80℃，It supports a wide voltage range of 110V to 220V and has a robust working pressure of ±0.5Mpa.The product is customizable with laser engraving,embossed logos or OEM/ODM services,ensuring adaptability for diverse applications.

With over 40 years of deep cultivation in the fuse industry, Zhenghao has launched a 500V 63-250A fast fuse core with a breaking capacity of 120kA. The rated voltage is 500V AC and the rated current can reach 250A. It has short-circuit protection, power on protection, and immediate circuit breaker protection. The GL/Gg symbol means line protection, and this type of fuse is used to protect cables and conductors.