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0102030405
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China DH Series Fuse Switch Disconnector - Reliable Power Switch from Leading Suppliers and Factory

The DH series Fuse Switch Disconnector is designed for high short-circuit current distribution circuits, accommodating rated AC 50Hz voltages of up to AC690V and heating currents of up to 630A. This versatile switch functions as a power switch, isolation switch, emergency switch, and provides essential circuit protection. Featuring a direct isolation knife type, it can also serve as a reliable knife switch, Manufactured in China, this product adheres to the standards of GB/T14048.3 and IEC60947-3, ensuring quality and safety. Available in current classes of 160A, 250A, 400A, and 630A, our Fuse Switch Disconnectors are sourced from reputable suppliers and reflect the excellence of our factory's production capabilities
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    Product Detail

    Meaning of Product Model
    DH Series Fuse Switch - Product Model Meaning
    Normal Working and Installation Conditions
    • The ambient air temperature shall not exceed +40℃ and not be lower than -5℃.
    • The altitude of the installation site shall not exceed 2000m.
    • Humidity: When the maximum temperature is +40℃, the relative humidity of the air does not exceed 50%. Higher relative humidity can be allowed at lower temperatures, such as reaching 90% at 20℃. Special measures should be taken for occasional condensation caused by temperature changes.
    • The pollution level of the surrounding environment is level 3.
    • The switch should be installed in a place without significant shaking, impact vibration, and invasion of rain and snow. At the same time, the installation location should be free of explosive hazardous media, and there should be no gas or dust in the media that can corrode metals and damage insulation.
    Structure Characteristics
    The product has a beautiful and innovative design. The switch is composed of a base, cover, and arc extinguishing chamber, all of which are made of arc resistant plastic and have a fully plastic structure. The static contact is directly installed on the base, and the arc extinguishing chamber is easy to disassemble. Each uses multiple arc extinguishing grids, enhancing the arc extinguishing ability and improving the contact life. The NT type fuse is installed inside the cover, which rotates in a fan-shaped manner and has a large electrical isolation distance to meet the requirements of the isolation switch. The cover can be easily removed from the base. On both sides of the switch, auxiliary contacts can be installed as needed to send signals indicating the opening and closing status of the switch.
    Main Technical Specifications
    Relationship between switches and fuses
    Conventional Thermal Current Ith Matching Fuse Size Rated Current of Fuse Link (A)
    160 NT00, NH00 10、16、25、32、40、50、63、80、100、125、160
    250 NT1, NH1 63、80、100、125、160、200、250
    400 NT2, NH2 160、200、250、315、400
    630 NT3, NH3 250、315、400、500、630
    Main Technical Parameters of Switches
    Model Specifications DH00-160 DH01-250 DH02-400 DH03-630
    Conventional Thermal Current (A) 160 250 400 630
    Rated Insulation Voltage Ui (V) 1000 1000 1000 1000
    Rated Impulse Withstand Voltage (kV) 12 12 12 12
    Rated Working Current (A) 500V 160 250 400 630
    690V 125 200 315 500
    Rated Making and Breaking Capacity (A) (1.05Ue) AC500V, AC-22B COSφ: 0.65 Connect 480 750 1200 1890
    AC500V, AC-22B COSφ: 0.65 Breaking 480 750 1200 1890
    Mechanical Life (Times) 1400 800 800 800
    Electrical Life (Times) 200 200 200 200
    Operating Force (N) ≤400 ≤400 ≤400 ≤400
    Rated Conditional Short-circuit Current (kA) (AC-21B/AC-22B) 50/120 50/120 50/120 50/120
    Usage Category 500V: AC22B
    690V: AC21B    		 500V: AC22B
    690V: AC21B    		 500V: AC22B
    690V: AC21B    		 500V: AC22B
    690V: AC21B
    Pollution Degree 3 3 3 3
    Degrees of Protection Provided by Enclosure IP30 IP30 IP30 IP30
    ⚠ Installation Precautions
    🔧 The contact parameters of the switch have been set by the manufacturer and cannot be adjusted freely during use.
    🔩 During the connection process between the busbar and the product, it is necessary to ensure that the distance between the busbar row holes is consistent with the product wiring holes to avoid product damage caused by external forces.
    Ordering Information
    📋 How to Order: Customers must indicate the product name, model, rated current, pole number and quantity.

    Example: DH02-400/31 (equipped with fuse: 315A, with microswitch)   Quantity: 10 units
    📌 Note: The specifications and dimensions are subject to change due to product improvements without prior notice, and the actual product shall prevail.
    Wiring Terminal Accessories
    Terminal Shape Terminal Model Torque N·M Cable Size mm² Compatible Switch Models
    M8 bolt (with wiring nose) — 12–15 16–70 DH-160
    M10 bolt (with wiring nose) — 30–35 25–150 DH-250~400
    M12 bolt (with wiring nose) — 35–40 25–240 DH-630
    DH Series Fuse Switch Terminal XYDZ001 XYDZ001 3 16–70 s(r)
    16–70 s(s)
    16–70 f+AE    		 DH-160
    DH Series Fuse Switch Terminal XYDZ002 XYDZ002 6 75–150 s(r)
    75–150 s(s)
    75–150 f, f+AE    		 DH-250
    DH Series Fuse Switch Terminal XYDZ004 XYDZ004 8 50–240 s(r)
    50–240 s(s)
    50–240 f, f+AE    		 DH-630
    ❓ Frequently Asked Questions
    Q What are the available models of the DH Series Fuse Switch and their rated currents?
    The DH Series Fuse Switch is available in four models: DH00-160 (160A), DH01-250 (250A), DH02-400 (400A), and DH03-630 (630A). Each model is matched with corresponding NT/NH type fuse sizes (NT00 through NT3).
    Q What is the rated insulation voltage and impulse withstand voltage of the DH Series?
    All models in the DH Series feature a Rated Insulation Voltage (Ui) of 1000V and a Rated Impulse Withstand Voltage of 12kV, ensuring reliable performance across a wide range of industrial applications.
    Q What are the installation environment requirements for the DH Series Fuse Switch?
    The switch must be installed in locations where the ambient temperature is between -5℃ and +40℃, altitude does not exceed 2000m, and relative humidity does not exceed 50% at 40℃. The installation site must be free from explosive media, corrosive gases, and significant vibration or shock.
    Q Can the contact parameters of the DH Series switch be adjusted in the field?
    No. The contact parameters are pre-set by the manufacturer and must not be freely adjusted during use. Any unauthorized adjustment may compromise performance and safety. Please contact the manufacturer if adjustments are required.
    Q What wiring terminal accessories are compatible with the DH Series switches?
    Three terminal accessories are available: XYDZ001 (for DH-160, cable 16–70mm²), XYDZ002 (for DH-250, cable 75–150mm²), and XYDZ004 (for DH-630, cable 50–240mm²). M8, M10, and M12 bolt connections with wiring nose are also supported depending on the model.
    Q How should I place an order for the DH Series Fuse Switch?
    When ordering, please specify the product name, model, rated current, pole number, and quantity. For example: DH02-400/31 (equipped with fuse: 315A, with microswitch), Quantity: 10 units. Note that specifications may change due to product improvements; the actual product shall prevail.