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HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(1).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(2).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(3).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(4).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(1).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(2).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(3).jpg
HH15(QSA)-Knife-Melt-Isolation-Switch-with-Fuse-(4).jpg

HH15(QSA) Knife Melt Isolation Switch with Fuse - Reliable Circuit Protection from China Suppliers and Factory

The HH15(QSA) Knife Melt Isolation Switch with Fuse is an essential component for industrial power systems, providing robust circuit protection and isolation for loads ranging from 63A to 1250A at AC380-660V. Manufactured in China, this high-quality isolation switch integrates effective fuse protection (NT00-NT3/RS0 series) and boasts an impressive short-circuit withstand capability of up to 100kA at 380V, guaranteeing reliable fault interruption, As a trusted supplier, we ensure that the HH15 switch is available in various configurations, including 3P, 4P, and 3+N, making it highly adaptable to your operational needs. With a mechanical endurance rating of 15,000 cycles and low torque operation (7.5-40Nm), this switch meets AC-23B utilization standards, ensuring efficiency and safety in motor control centers and distribution panels, Our factory prioritizes a compact design that merges isolation and melting protection, making the HH15(QSA) switch a perfect choice for those seeking safety and overload protection during maintenance tasks. Choose our products for reliable and efficient industrial solutions
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    Product Details

    Type Designation
    HH15(QSA)-Fuse-Isolation-Switch-5
    1 Isolator-fuse combination
    2 Design serial number
    3 Conventional heating current (A)
    4 Number of poles: 2-pole, 3-pole, 4-pole
    5 Indicates the number of auxiliary contacts: 0 - No auxiliary contacts; 1 - With 1 pair of auxiliary contacts; 2 - With 2 pairs of auxiliary contacts.
    6 "QP" indicates a structure without a fuse and with parallel contacts
    "QA" indicates a structure without a fuse and with series contacts.
    "QSA or no letter" indicates a structure with a fuse and series contacts.
    7 Type Code Explanation, Single-Throw, S: Double-Throw
    Technical Parameters
    Specification (s) 63 125 160 250 400 630 800 1000 1250
    Main pole number 3, 4, 3+N 3
    Rated insulation voltage (V) Ue=400 time, Uj=660; Ue=660 time, Uj=1000.
    Rated working voltage (V) AC=380, 660
    Rated enclosed heating current (A) 63 125 160 250 400 630 800 1000 1250
    Rated operating current (A) 400VAC-23B 63 125 160 250 400 630 800 1000 1250
    660VAV-23B 63 100 160 250 315 425 500 630 800
    Rated limited short-circuit current 380VY/H (kA) 100 50
    Rated limited short-circuit current 660V (kA) 50
    Mechanical life (times) 15000 15000 12000 12000 12000 3000 500 500 500
    Electrical life (times) 1000 1000 300 300 300 200 100 100 100
    Fuse rated current (A) 400V/1660V time 63/63 125/100 160/160 250/250 400/315 630/425 800/500 1000/630 1250/800
    Model of fuse tube with knife-type contacts RDT16-00 (NT00) RDT16-1 (NT1) RDT16-2 (NT2) RDT16-3 (NT3) RS0
    Operating torque (Nm) 7.5 16 30 40
    Rated heating current of auxiliary contact ITH380V/AC-11 (A) 5
    Product Display
    HH15(QSA)-Fuse-Isolation-Switch-(1)
    HH15(QSA)-Fuse-Isolation-Switch-(2)
    HH15(QSA)-Fuse-Isolation-Switch-(3)
    HH15(QSA)-Fuse-Isolation-Switch-(4)
    Outline and Installation Dimensions

    Outline and installation dimensions of HH15(QSA) series isolating switch-fuse combinations

    HH15-3
    Model specifications A B C D E F G H I L L1 L2 L3
    HH15-63 12 6 100 M5 2 39.5 72 38.5 9 199-250 250-301 301-385 180-199
    HH15-125 15 7.5 116 M6 3 38.5 70 40.5 10 199-250 250-301 301-385 180-199
    HH15-5
    Model specifications A B C D E F G H I L L1 L2 O
    HH15-160 20 10 146 M8 4 44 107 65 46 226-284 284-342 342-400 120
    HH15-250 25 12.5 160 M10 4 40 107 65 43.5 226-284 284-342 342-400 160
    HH15-400 25 12.5 160 M10 6 38 107 65 43.5 226-284 284-342 342-400 160
    HH15-7
    Model specifications A B C D E F G H I L L1 L2 L3
    HH15-630 40 20 270 M12 6 33 B7 87 60 300-355 295-330 300-400 400-500
    HH15-9
    Model specifications A B1 C D E F G H I L L1 L2 L3
    HH15-800/1000 50 18 340 M12 1 33 87 87 60 300-355 295-330 330-400 400-500
    HH15(QSA)-800/3 Single Hole 50 18 340 M12 1 33 87 87 38 300-355 295-330 330-400 400-500
    HH15-11
    Model specifications A B C D E F G H I L L1 L2 M N O
    HH15-1250 70 17 370 M10 8 50 120 120 80 395-430 495-530 560-595 400 330 153
    Frequently Asked Questions
    What is the HH15(QSA) series isolating switch-fuse combination used for?
    The HH15(QSA) series is a fuse isolation switch designed to provide both isolation and overcurrent protection in AC power distribution systems. It is widely used in industrial switchgear panels operating at voltages up to 660V AC.
    What rated current ranges are available for the HH15(QSA) series?
    The HH15(QSA) series is available in a wide range of conventional heating currents including 63A, 125A, 160A, 250A, 400A, 630A, 800A, 1000A, and 1250A, making it suitable for various load requirements.
    What is the difference between QP, QA, and QSA structure designations?
    "QP" indicates a structure without a fuse and with parallel contacts; "QA" indicates a structure without a fuse and with series contacts; "QSA or no letter" indicates a structure with a fuse and series contacts.
    What pole configurations are supported by the HH15(QSA) series?
    The HH15(QSA) series supports 3-pole, 4-pole, and 3+N pole configurations for models up to 630A. For higher ratings (800A–1250A), only 3-pole configurations are available.
    What type of fuse tubes are compatible with the HH15(QSA) series?
    Compatible fuse tubes include RDT16-00 (NT00) for 63A–160A models, RDT16-1 (NT1) for 250A, RDT16-2 (NT2) for 400A, RDT16-3 (NT3) for 630A–800A models, and RS0 type fuses for 1000A and 1250A models.
    What is the mechanical and electrical lifespan of the HH15(QSA) switch?
    Mechanical life ranges from 500 to 15,000 operations depending on the current rating — smaller models (63A–125A) achieve up to 15,000 operations, while larger models (800A–1250A) are rated at 500 operations. Electrical life ranges from 100 to 1,000 operations accordingly.