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HH15 (QSA) Series Isolation Switch Fuse - Reliable China Suppliers & Factory for AC 50Hz Up to 1600A

The HH15(QSA) series products are designed for AC 50Hz applications, with a rated voltage of up to AC690V and an agreed heating current of up to 1600A. These robust solutions are perfect for high short-circuit current distribution circuits and motor circuits. Serving as a reliable manual and infrequently operated main switch, the HH15(QSA) series is particularly well-suited for installation in advanced drawer-type low-voltage complete sets. Additionally, the double throw switch facilitates the occasional connection and disconnection of dual electrical circuits. Our switches comply with GB/T14048.3 and IEC60947-3 standards, ensuring top-notch quality and performance. Current classes available include 63A, 125A, 160A, 250A, 400A, 630A, 800A, 1000A, 1250A, and 1600A. As a leading factory and supplier in China, we prioritize innovation and excellence in our electrical solutions to meet the evolving demands of our clients
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    Product Detail

    🔖 Product Model Meaning
    HH15 Product Model Meaning
    ⚙️ Normal Working and Installation Conditions
    • The ambient air temperature shall not be higher than +40℃ and not lower than -5℃.
    • The elevation 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, shock 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 and dust in the media that can corrode metal and damage insulation.
    🏗️ Structure Characteristics

    The switch adopts a fully enclosed structure to ensure stable operation reliability and performance improvement; Featuring a unique rolling insertion contact system. Each phase has two sets of contact systems with this dual break point, the contact system. The current is passed through several rollers separately, resulting in a significant reduction in the electric reaction force on each roller. During the movement, the contact between the roller and the static contact has both rolling and sliding friction. This can effectively avoid welding. The operating mechanism has energy storage springs, so the movement speed of the moving contact group is independent of the magnitude of the operating force and the operating speed.

    The actuator consists of a panel mounted handle and a hand the driving coupling, extension shaft, shaft coupling, and driving shaft are composed of a handle meshing driving coupling. The operating handle is installed on the switchgear door. When the cabinet door is closed, the handle fits with the operating rod of the switch. When the switch is in the closed position, the handle is interlocked with the cabinet door to prevent it from opening.
    The depth of installation of switches in a complete set of cabinets can be considered according to the needs of the combination installation of various electrical components. The extension shaft and shaft coupling are only used when the drive shaft is not long enough, and have a considerable range of movement.
    📊 Main Technical Specifications
    Matching Relationship Between Switches and Fuses
    Agreed Heating Current Ith Matching Fuse Size Rated Current of Fuse (A)
    63 NT00 4、6、10、16、20、25、32、40、50、63
    125 NT00 10、16、25、32、40、50、63、80、100、125
    160 NT00 10、16、25、32、40、50、63、80、100、125、160
    250 NT1 63、80、100、125、160、200、250
    400 NT2 160、200、250、315、400
    630 NT3 250、315、400、500、630
    800 CRT3 800
    1000 NT4 800、1000
    1250 NT4 800、1000、1250
    1600 RT20-4 1600
    Main Technical Parameters of Switches
    Model and Specification HH15(QSA)-63 HH15(QSA)-125 HH15(QSA)-160 HH15(QSA)-250 HH15(QSA)-400 HH15(QSA)-630 HH15(QSA)-800 HH15(QSA)-1000 HH15(QSA)-1250 HH15(QSA)-1600
    Agreed Heating Current (A) 63 125 160 250 400 630 800 1000 1250 1600
    Rated Insulation Voltage (V) 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
    Rated Impulse Withstand Voltage (kV) 8 8 12 12 12 12 12 12 12 12
    Rated Working Current (A) 400V 63 125 160 250 400 630 800 1000 1250 1600
    690V 63 100 160 250 315 500 630 800 1000 1250
    Rated Making and Breaking Energy Force (A) (at 1.05Ue) AC690V, AC-23B COSФ:0.35 Current Connection 630 1250 1600 2500 4000 6300 8000 10000 12500 16000
    AC690V, AC-23B COSФ:0.35 Off 504 1000 1280 2000 3200 5040 6400 8000 10000 12800
    Mechanical Lifespan (times) 1400 1400 800 800 800 800 500 500 500 500
    Electrical Lifespan (times) 200 200 200 200 200 200 100 100 100 100
    Operating Torque (Nm) 7.5 7.5 16 16 16 30 40 40 40 50
    Rated Limiting Short-Circuit Current (kA) 50 50 50 50 50 50 100 100 100 100
    Utilization Category AC-23B AC-23B AC-23B AC-23B AC-23B AC-23B AC-23B AC-23B AC-23B AC-23B
    Pollution Degree 3 3 3 3 3 3 3 3 3 3
    Installation Category III III III III III III III III III III
    ⚠️ 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 holes is consistent with the product wiring holes to avoid product damage caused by external forces.
    🛒 Ordering Notice

    The customer must specify the following when ordering the switch:

    • Product model
    • Agreed heating current
    • Number of poles
    • Whether there is a fuse
    • Whether there is an auxiliary contact switch
    • Number of switches required

    Example HH15(QSA)-630/32, equipped with 500A melt, quantity 20 units.

    ⚠️ Note: The specifications and external dimensions may change due to product improvements without prior notice. The actual product shall prevail.
    ❓ Frequently Asked Questions
    Q What is the maximum ambient temperature for the HH15 (QSA) fuse switch disconnector?
    The HH15 (QSA) switch is designed to operate in ambient air temperatures not exceeding +40℃ and not lower than -5℃. Installations in environments exceeding these limits may require special measures or equipment.
    Q What makes the rolling insertion contact system of the HH15 switch unique?
    The rolling insertion contact system features a dual break point design where each phase has two sets of contact systems. Current is distributed through multiple rollers, significantly reducing the electric reaction force on each roller. The combined rolling and sliding friction between the roller and static contact effectively prevents contact welding, ensuring long-term reliable operation.
    Q What fuse size should be matched with an HH15 switch rated at 400A?
    For an HH15 switch with an agreed heating current of 400A, the matching fuse size is NT2. The rated current of the fuse can be selected from: 160A, 200A, 250A, 315A, or 400A depending on the application requirements.
    Q Can the contact parameters of the HH15 switch be adjusted on-site?
    No. The contact parameters of the HH15 switch are pre-set by the manufacturer during production and must not be adjusted freely during installation or use. Any unauthorized adjustment may affect the switch's performance and safety.
    Q What information is required when placing an order for the HH15 (QSA) switch?
    When ordering, customers must specify: the product model, agreed heating current, number of poles, whether a fuse is required, whether an auxiliary contact switch is needed, and the total quantity of switches. For example: HH15(QSA)-630/32, equipped with 500A melt, quantity 20 units.
    Q What is the mechanical and electrical lifespan of the HH15 switch series?
    For models HH15(QSA)-63 and -125, the mechanical lifespan is 1,400 operations and the electrical lifespan is 200 operations. For models -160 to -630, the mechanical lifespan is 800 operations. For models -800 to -1600, the mechanical lifespan is 500 operations and the electrical lifespan is 100 operations.