Indoor high-voltage Side-Mounted Vacuum Circuit Breaker 12kV 15kV

Documentation Resource Library

Key attributes

Brand	ROCKWILL
Model NO.	Indoor high-voltage Side-Mounted Vacuum Circuit Breaker 12kV 15kV
Rated voltage	12kV
Rated normal current	630A
Rated frequency	50/60Hz
Series	ZN63

Product descriptions from the supplier

Description

Product Overview

The Side-Mounted Vacuum Circuit Breaker (ZN63(VS1)-12 Series) is a high-performance indoor high-voltage switching device designed for 12kV, 50Hz three-phase power systems. It serves as a core protection and control component, leveraging vacuum arc-extinguishing technology for exceptional reliability.

Its side-mounted, fixed installation design is optimized for integration into fixed-type switchgear, making it ideal for standalone use or in ring network systems, compact substations, and custom power distribution setups. It excels in scenarios requiring frequent operation at rated current or repeated short-circuit current interruption.

Core Features

Vacuum Arc-Extinguishing Technology: Ensures fast, clean arc extinction with no gas pollution, delivering a long electrical life and minimal maintenance.
Side-Mounted Fixed Design: Space-saving structure that integrates seamlessly into fixed-type switchgear, maximizing layout efficiency.
High Operational Reliability: Engineered for frequent operation and repeated short-circuit current interruption, suitable for high-demand industrial and utility applications.
Flexible Deployment: Can be used independently or integrated into ring network systems, compact substations, and non-standard power distribution systems.
Wide Environmental Adaptability: Operates stably in temperatures from -15°C to +40°C, with seismic resistance up to 8 degrees and strong humidity tolerance.
Global Standard Compliance: Fully compliant with IEC and GB standards, ensuring reliable performance and worldwide market acceptance.

Technical Parameters

No.	Item		Unit	Data
1	Rated Voltage		KV	12
2	Rated Current		A	630~1250	1250	1250
3	Rated Short - Circuit Breaking Current		KA	20	25	31.5
4	Rated Short - Circuit Making Current		KA	50	63	80
5	Rated Peak Withstand Current		KA	50	63	80
6	4S Rated Short - Circuit Withstand Current		KA	20	25	31.5
7	Rated Insulation Level	Power Frequency Withstand Voltage (before and after rated breaking)	kV	42 (64 for gap)
7	Rated Insulation Level	Impulse Withstand Voltage (before and after rated breaking)		5 (85 for gap)
8	Rated Operating Sequence		-	Open - 0.3S - Close - Open - 180S - Close - Open
9	Mechanical Life		Times	10000
10	Number of Short - Circuit Breaking Current Operations for Rated Short - Circuit Breaking Current		Times	50
11	Rated Closing Voltage of Operating Mechanism (DC)		V	110, 220
12	Rated Opening Voltage of Operating Mechanism (DC)		V	110, 220
13	Contact Opening Distance		mm	11 ± 1
14	Over - travel (Compression Length of Contact Spring)		mm	3.5 ± 0.5
15	Spring - bounce Time of Three - phase Opening and Closing		ms	≤2
16	Spring - bounce Time of Contact Closing		ms	≤2
17	Average Opening Speed		m/s	1.1 ± 0.2
18	Average Closing Speed		m/s	0.6 ± 0.2
19	Opening Time	At Highest Operating Voltage	S	≤0.05
19	Opening Time	At Lowest Operating Voltage		≤0.08
20	Closing Time		S	0.1
21	Main Circuit Resistance of Each Phase		μΩ	60		50
22	Allowable Wear Accumulated Thickness of Moving and Static Contacts		mm	3

Temperature: -15°C to +40°C
Altitude: ≤1000m (custom insulation levels available for higher elevations)
Seismic Intensity: ≤8 degrees
Humidity: Daily average ≤95%, Monthly average ≤90%
Installation Environment: Indoor locations free from fire, explosion, severe pollution, chemical corrosion, and severe vibration.

Application Scenarios

Fixed-Type Switchgear: The primary protection and control device for indoor 12kV switchgear in substations and industrial facilities.
Frequent Operation Sites: Ideal for industrial plants, mines, and renewable energy facilities requiring regular load switching.
Ring Network & Compact Substations: Provides reliable protection for urban distribution networks and compact power supply systems.
Custom Power Distribution: Adaptable for non-standard power systems and special-purpose electrical installations.
Critical Load Protection: Ensures continuous power supply for data centers, hospitals, and commercial buildings with high-reliability demands.

Installation & Maintenance

Installation: Designed for side-mounted, fixed installation in indoor switchgear, with standardized mounting points for easy integration.
Operation: Supports manual and motorized operation, with clear mechanical indication for safe switching status confirmation.
Maintenance: Vacuum interrupters require no periodic servicing; only annual inspection of mechanical components and insulation is recommended.
Safety: Always follow lockout/tagout procedures during maintenance to prevent accidental re-energization.

Overall dimensions

Indoor high-voltage Side-Mounted Vacuum Circuit Breaker 12kV 15kV

Negotiable

Pricing calculator

Model

ZN63-12/630

Warranty by

Whole life care manager

Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.

The equipment supplier has passed platform qualification certification and technical evaluation, ensuring compliance, professionalism, and reliability from the source.

Indoor high-voltage Side-Mounted Vacuum Circuit Breaker 12kV 15kV

Attributes

Description

Documentation Resource Library

Related Products

Related Solutions