Product

ZN□(SRM6)-12(V)/630-20 Inflatable cabinet circuit breaker (with isolation belt grounding)

Product Overview The 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 short-time withstand current of 20 kA (for 4 s) and 25 kA (for 3 s) at a rated current of 630 A, with 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. Share:

Model and Its Designation

Precautions for Service Environment Conditions
● Altitude: Not exceeding 2000 m; Seismic intensity: Not exceeding Grade 8
● Pollution Withstand Class: Class II
● Ambient operating temperature of the product: -40°C ~ +140°C; Relative humidity: Daily average not exceeding 90%, monthly average not exceeding 90%
● 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

Item	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