GYM9DC DC Miniature Circuit Breaker

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GYM9DC-1P-2.webp
GYM9DC-1P-3.webp
GYM9DC-1P-4.webp
GYM9DC-1P-5.webp
GYM9DC.webp
GYM9DC-2P-1.webp
GYM9DC-2P-2.webp
GYM9DC-2P-3.webp
GYM9DC-2P-4.webp
GYM9DC-2P-5.webp
GYM9DC-3P-1.webp
GYM9DC-3P-2.webp
GYM9DC-4P-1.webp
GYM9DC-4P-3.webp
GYM9DC-4P-4.webp
GYM9DC-4P-5.webp
GYM9-125DC-2P-1.webp
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GYM9-125DC-2P-4.webp
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GYM9-125DC-2P-6.webp
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Description

The GYM9DC DC miniature circuit breaker series is used for overload and short-circuit protection in DC distribution lines, including communication and photovoltaic systems. The series combines the 1-63A GYM9-63DC versions with the higher-current GYM9-125DC versions, while keeping the different current ranges and breaking capacities clearly separated.

Series Structure

VersionCurrent rangeVoltage coverageBreaking capacityTypical use
GYM9-63DC1A to 63AUp to 1000VDC by pole configuration6kADC communication and photovoltaic protection circuits
GYM9-125DC63A frame and 125A frame, including 80A, 100A and 125A ratingsDC250V, DC500V and DC1000V configurations by pole count10kA listed in the technical dataHigher-current DC distribution protection circuits

GYM9-63DC Electrical Data

ItemSpecification
Rated currentUp to 63A
Poles1P, 2P, 3P, 4P
Rated voltage Ue1P: 250VDC; 2P: 500VDC; 3P: 750VDC; 4P: 1000VDC
Insulation voltage Ui1000V
Rated breaking capacity6kA
Rated impulse withstand voltage Uimp6kV
Dielectric test voltage2kV for 1 minute
Pollution degree2
Thermo-magnetic release characteristicB: 6In ±20%; C: 12In ±20%
Mechanical life20,000 operations

GYM9-125DC Electrical Data

FramePolesRated voltageRated currentRated ultimate short-circuit capacityTime constantInstantaneous tripping current
63A frame1PDC250V1A, 2A, 3A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A10,000A10ms8In to 12In
63A frame2P, 3PDC500V1A to 63A ratings listed above10,000A10ms8In to 12In
63A frame4PDC1000V1A to 63A ratings listed above10,000A10ms8In to 12In
125A frame1PDC250V80A, 100A, 125A10,000A10ms8In to 12In
125A frame2P, 3PDC500V80A, 100A, 125A10,000A10ms8In to 12In
125A frame4PDC1000V80A, 100A, 125A10,000A10ms8In to 12In

Application and Installation Notes

  • Provides overload and short-circuit protection for DC power distribution lines.
  • Can also be used for infrequent line operation under normal conditions.
  • The 1P to 4P voltage ratings should be selected according to the DC system voltage and pole configuration.
  • Use the 125A frame only where the higher-current ratings are required.

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