3AH2-EP Type Sealed Vacuum Circuit BreakerDetailed product description：

The 3AH2-EP solid sealed vacuum circuit breaker is designed to meet the demand of the Chinese market for high-quality vacuum circuit breakers and easy adaptation to mainstream switchgear experience. Siemens has launched a new generation of 3AH2-EP solid sealed vacuum circuit breakers, which are suitable for use as protection and control appliances in three-phase power systems with a rated voltage of 12KV and a frequency of 50Hz, especially in places with frequent operation. The Siemens 3AH2-EP vacuum circuit breaker adopts a composite insulation method and a solid sealed structure. It is different from insulation covers and insulation cylinder structures. It is a circuit breaker composed of a vacuum arc extinguishing chamber and conductive connection parts sealed with epoxy resin through a special process to form a pole, and Siemens' long-life 3AH2 series mechanism. The Siemens 3AH2-EP vacuum circuit breaker can be used for both central and fixed switchgear, and can be easily interchanged with mainstream circuit breakers in China, with wide compatibility and interchangeability.

Technical parameters of 3AH2-EP solid sealed vacuum circuit breaker

project	unit	data
rated voltage	kV	12
rated frequency	Hz	50
Rated power frequency withstand voltage	kV	42
Rated lightning impulse withstand voltage (peak)	kV	75
rated current	A	Up to 3150
Rated short-circuit breaking current	kA	Up to 40
Rated short-time withstand current (4S)	kA	Up to 40
Rated short-circuit closing current (peak)	kA	Up to 100
Rated peak withstand current (peak value)	kA	Up to 100
Electrical lifespan	time	274 (E2 level)
Rated operation sequence automatic reclosing		O-0.3s-CO-180s-CO
mechanical life	time	30,000*
Secondary circuit power frequency withstand voltage (1min)	V	2,000
Meeting center distance	mm	≤1600A 210 ± 1.5     2000~3150A 275 ± 1.5
Closing and opening different periods	ms	≤ 2
Closing bounce time	ms	≤ 2
closing time	ms	<75
Opening time	ms	<65