The 12kV 630A-5000A Vacuum Circuit Breaker is specifically designed for indoor switchgear with a rated voltage of 12kV and an AC frequency of 50/60Hz. It features a modular operating mechanism and is widely applicable in various industrial, mining, and power grid applications. This breaker can be configured as a handcart unit for integration with KYN28A-12 switchgear or as a fixed unit equipped with relevant mechanical interlocks, making it compatible with XGN2 and other fixed cabinets.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated Current	A	630/1250/1600/2000/2500/3150/4000/5000
4	Rated Power Frequency Withstand Voltage	kV	48(Across the contact gaps) / 42(To Ground)
5	Rated Lightning Impulse Withstand Voltage	kV	75
6	Rated Short-Circuit Breaking Current	kA	25/31.5/40/50
7	Rated Short-Circuit Making Current (Peak)	kA	63/80/100/125
8	Rated Withstand Current (Peak)	kA	63/80/100/125
9	Rated Duration of Short-Circuit	s	4
10	Operating Cycles at Rated Short-Circuit Breaking Current	Times	E2
11	Mechanical Endurance	Times	30000
12	Standard Operating Sequence	-	O-0.3s-CO-180s-CO
13	Allowable Wear Thickness of Contact	mm	≤3

Mechanical characteristics

No.	Name	Unit	Data
1	Clearance between Moved and Fixed Contact	mm	9±1
2	Contact Overtravel	mm	3.5±0.5
3	Average Closing Speed	m/s	0.7±0.2
4	Average Opening Speed (Average Speed of First Opening at 6mm)	m/s	1.1±0.2
5	Rated Contact Pressure	N	2500±200N(25kA) 3100±200N(31.5kA) 4800±300N(40kA) 6000±500N(50kA)
6	Closing Time	ms	30～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤2
9	No-Simultaneity of Closing/Opening Operations of 3-Phase	ms	≤2

Product Advantages

The 12kV 630A-5000A Vacuum Circuit Breaker offers numerous advantages:

Circuit Breaker Performance

Meets E2-C2-M2 standards.

Easy maintenance

The modular mechanism design allows for easy replacement of closing and opening coils without dismantling other components. No testing or adjustment is required after replacement, enabling users to perform replacements independently and simplifying subsequent maintenance.

Excellent conductivity

Features a well-designed conductive circuit that meets 1.1 times the rated current temperature rise level.

Wide application range

The product series covers a broad range of applications, with rated currents from 630A to 5000A and rated breaking currents from 20kA to 50kA. It is suitable for environments at altitudes up to 4500 meters and operating temperatures ranging from -40°C to 40°C.

Supports intelligent customization

a. Wireless Temperature Monitoring: Includes a self-powered design for safety and maintenance-free operation.

b. Mechanical Characteristics Monitoring: Provides real-time monitoring of circuit breaker operating data to detect and resolve potential issues early.

c. Motorized Cabinet Entry: Enables remote operation to ensure personal safety.

d. Partial Discharge Testing: Detects real-time component aging to enhance reliability.