ZN□ (SRM6)-24 (V)/630-20 Inflatable cabinet circuit breaker (with isolation whithout grounding)
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- Product Overview
- The ZN□(SMR6)-24(V)/630-20 circuit breaker features easy installation, low maintenance, long service life, compact size, cost-effectiveness, high safety and reliability. This product complies with the technical requirements for AC high-voltage circuit breakers specified in GB1984-89 and GB/T1984-2003.
The main circuit has a rated current of 630 A, a rated short-time withstand current of 20 kA (for 3 s), and a mechanical operating life of 10,000 cycles. The grounding circuit has a rated short-time withstand current of 20 kA (for 2 s), and a mechanical operating life of 2,000 cycles.
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Model and Its Designation
Precautions for Service Environment Conditions
● Altitude: Not exceeding 1000 m; Seismic intensity: Not exceeding Grade 8
● Pollution Withstand Class: Class II
● Ambient Temperature: -40°C ~ +140°C; Relative Humidity: Daily average not exceeding 90%, monthly average not exceeding 90%
● Applicable Locations: Not suitable for installation sites with frequent severe vibrations, nor for sites where water vapor, gases, chemically corrosive deposits, salt mist, dust and dirt that obviously affect the performance of the mechanism exist, as well as sites with fire or explosion hazards.
Technical Parameters
Overall and Mounting DimensionsItem Unit Technical Parameters Rated Frequency Hz 50 Rated Current A 630 Rated Short-Time Withstand Current KA 20/25 Rated Peak Withstand Current KA 50 Rated Short-Circuit Duration s 4 Rated Short-Circuit Making Current Times 50 Rated Operating Sequence 0-0.3s-180s-co
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