Reliable VAC303c 12kv High Voltage Vacuum Interrupter

• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Speed: Normal Type Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Model NO.: TD-12/630-20(VAC303C)
• Poles Number: 3
• Type: Circuit Breaker
• Certification: ISO9001-2000, CE, CCC
• Power Frequency Withstand Voltage: 42kv
• Lightning Impulse Withstand Voltage: 75kv
• Mechanical Life: 10000 Times
• Rated Clearance Between Open Contacts: 10~12mm
• Rated Contact Stroke: 3~4mm
• Transport Package: Carton
• Specification: VAC303C
• Trademark: VACEM
• Origin: Wenzhou, China

Product Description

Vacuum interrupter for vacuum circuit breaker
TD-12/630-20(VAC303C)

General description

Get ready to experience the power of the Reliable VAC303C 12kv High Voltage Vacuum Interrupter! This cutting-edge product boasts a ceramic insulating shell, a middle sealing or built-in fixed shielding tube, and copper and chromium alloy contact material. But that's not all - the cup-shaped longitudinal magnetic electrode has been optimized for uniform electromagnetic field distribution, making it more stable and reliable than ever before. And with a special sophisticated process that improves insulation levels, you can trust that this interrupter will keep your power grids running smoothly.
But what really sets the VAC303C apart is its versatility. With two series available for air insulation, embedded insulation, or external insulation protection, this interrupter can be matched with relevant indoor and outdoor vacuum circuit breakers or vacuum distribution devices. It's the perfect control and protection device for transmission and distribution electrical power grids with a frequency of 50Hz/60Hz, rated voltage of 12kV, rated current of 630A-4000A, and rated short circuit breaking current of 5kA-40kA. VI is mainly applied to VZN63-12kV series indoor MV vacuum circuit breaker. Meets or exceeds the requirement of IEC62271-100 and E2 level in GB1984-2003.

So what are you waiting for? Upgrade your power grid with the Reliable VAC303C 12kv High Voltage Vacuum Interrupter today!

Main technical parameter

Specification of VI

Parameter item	Unit	Data
Rated voltage	kV	12
Rated current	A	630
Rated frequency	Hz	50/60
Rated short-time power frequency withstand voltage(1 min)	kV	42
Rated lightning impulse withstand voltage	kV	75
Rated short-circuit breaking current	kA	20
Rated peak withstand current	kA	50
Rated short-circuit making current	kA	50
Rated short-time withstand current	kA	20
Rated short-circuit duration	s	4
Rated single capacitor bank breaking current	A	630
Rated back to back capacitor bank breaking current	A	400
Breaking operation of rated short circuit breaking current	times	30
Mechanical life	times	10000
Contact closing force due to bellows and atomsphere	N	90±30
Force required to hold contact open at full stroke	N	150±40
Circuit resistance at lowest rated contact force	μΩ	≤25
Contact limit erosion	mm	3
Internal gas pressure	Pa	≤1.33×10^-3
Weight of moving parts	kg	0.75
Storage life	year	20

Specifications required for matched switchgear

Parameter item	Unit	Data
Rated clearance between open contacts	mm	11±1
Average opening speed	m/s	1.1±0.2
Average closing speed	m/s	0.6±0.2
Rated contact pressure	N	2000±200
Contact bouncing duration at closing operation	ms	≤2
Closing and opening non-simultaneity of contacts	ms	≤2
Maximum rebound during opening	mm	≤2
Rated contact stroke	mm	3.5±0.5

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