EVH6-31.5 series railway specific single pole vacuum circuit breakerDetailed product description：

The EVH6-31.5 series railway specific single pole vacuum circuit breaker is an indoor single pole circuit breaker with a single-phase AC frequency of 50Hz and a rated voltage of 31.5kV. Specially used for railway substations and partition pavilions, for power supply, protection, and control of railway traction systems.
The circuit breaker adopts an integral layout, and the operating mechanism is an independent module with independent models. By adopting this form, the structure becomes simple and compact, and the mechanism can be individually packaged and then combined with the circuit breaker, greatly improving production efficiency and also greatly enhancing the mechanical operation reliability of the circuit breaker. The arc extinguishing chamber and operating mechanism of the circuit breaker are arranged in a front to back manner, with a reasonable structure and small volume.
The energy storage part, transmission part, buffering part, tripping part, and mechanical interlocking of the operating mechanism are all integrated into one, with only one output interface connected to the main circuit. The mechanism is composed of various forces in the mechanism, and the design will fully consider the effect of each force in the mechanism, making the arrangement of the transmission mechanism reasonable to ensure the minimum deformation of components. This not only ensures performance but also improves the reliability of the mechanism.

Technical parameters of EVH6-31.5 series railway specific single pole vacuum circuit breaker

serial number	Characteristic parameters			performance metrics
one	Rated voltage (kV)			thirty-one point five
two	Rated current (A)			two thousand and five hundred
three	Rated short-circuit breaking current (kA)			thirty-one point five
four	Rated short-circuit current breaking times (times)			thirty
five	Rated insulation level (before and after disconnection)	Rated lightning impulse withstand voltage (kV)	Alternating and relative to each other	two hundred and ten
			Between fracture surfaces	two hundred and ten
		Rated power frequency withstand voltage (kV 1min)	Alternating and relative to each other	one hundred and ten
			Between fracture surfaces	one hundred and ten
			Auxiliary circuit and control circuit	two
six	Rated dynamic stability current (kA peak)			eighty
seven	Rated thermal stability current (kA 4s)			thirty-one point five
eight	Rated short-circuit closing current (kA peak)			eighty
nine	Mechanical lifespan (times)			twenty thousand