Name: China 12kV Indoor Vacuum Circuit Breaker with Lateral Operating Mechanism for Medium Voltage Switchgear Manufacturers Suppliers Factory
Brand: XDTZ
SKU: 263724626

The 12kV Vacuum Circuit Breaker with Lateral Operating Mechanism

The 12kV Indoor Vacuum Circuit Breaker with Lateral Operating Mechanism for Medium Voltage Switchgear is designed for indoor switchgear with a rated voltage of 12kV and an AC frequency of 50/60Hz. It adopts a compact and practical structural design, providing reliable closing and opening performance for medium-voltage power distribution systems. The product is suitable for various indoor power distribution applications, offering stable operation and convenient installation and maintenance.

It incorporates our company's VTZ series modular operating mechanism and is developed as a derivative product of the series. The modular mechanism provides stable operation and convenient maintenance while allowing the circuit breaker to adapt to different switchgear configurations and installation requirements.

Featuring a lateral operating mechanism layout, the circuit breaker is well-suited for various industrial and mining enterprises, power grid equipment, and medium-voltage distribution applications. It is primarily designed for urban power supply ring main units, providing reliable switching, control, and protection for urban distribution networks and other applications requiring stable and dependable power supply.

Product Specifications

Specification Sheet

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Shenzhen Mandarin Oriental Hotel

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated Current	A	630/1250/1600
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
7	Rated Short-Circuit Making Current (Peak)	kA	63/80
8	Rated Withstand Current (Peak)	kA	63/80
9	Rated Duration of Short-Circuit	s	4
10	Operating Cycles at Rated Short-Circuit Breaking Current	Times	E2
11	Mechanical Endurance	Times	10000
12	Standard Operating Sequence	-	O-0.3s-CO-180s-CO O-180s-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)
6	Closing Time	ms	30～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤3
9	No-Simultaneity of Closing/Opening Operations of 3-Phase	ms	≤2

product advantages

The 12kV Vacuum Circuit Breaker with Lateral Operating Mechanism offers numerous advantages:

Breaker Performance

Meets E2-C2-M2 performance requirements, ensuring reliable electrical and mechanical endurance as well as stable switching performance under demanding operating conditions. This makes the circuit breaker suitable for applications requiring frequent operation and reliable fault interruption.

Convenient Maintenance

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

Excellent Insulation Performance

The main conductive circuit utilizes an APG high-strength epoxy resin composite insulated cylinder, providing excellent insulation performance that exceeds the requirements of relevant IEC standards. This robust insulation design also enhances the overall dielectric strength and operational reliability of the circuit breaker.

High Adaptability

The three phases of the circuit breaker are arranged from inside to outside, with a minimum cabinet depth of 900mm, making it suitable for various environments. The circuit breaker can be equipped with a mechanical interlock for seamless integration with the isolating switch and grounding switch of the cabinet, ensuring high safety.

Product Applications

The 12kV Vacuum Circuit Breaker with Lateral Operating Mechanism has many applications:

Urban community distribution systems

Mobile substation equipment

Industrial and mining enterprises

Product Outline Drawing

12kV Vacuum Circuit Breaker with Lateral Operating Mechanism manufacturer

Note: The 12kV Vacuum Circuit Breaker with Lateral Operating Mechanism offers multiple configuration options:

- The primary conductive circuit main wiring can be positioned on either the left or right side.

- The main shaft of the 12kV circuit breaker with lateral operating mechanism can be extended to the left or right side, allowing the installation of corresponding parts for cabinet interlocking.

- Additionally, the opening mechanical operation lever can be extended to the left or right at the top, facilitating seamless connection to the cabinet to meet specific operational safety requirements for users.

Secondary Wiring Diagram

12kV Vacuum Circuit Breaker with Lateral Operating Mechanism factory

Our Retrofitting Solution

Product Category	Specific Product	Applicable Scenarios
Vacuum Circuit Breakers	VS1-12, ZN63A-12, ZN12-12	Replacement of original load switches or old circuit breakers
Operating Mechanism	Spring Mechanism (Electric/Manual)	Mechanism Damage, Manual to Electric Conversion
Insulator	Contact Box, Post Insulator, Bushing	Insulation Aging, Cracking
Vacuum Interruptor	12kV General Type	Circuit Breaker Core Replacement
Intelligent Module	Current/Voltage Sensor, Communication Module	Intelligent Upgrade
Complete Cabinet	HXGN-12, XGN-12	Severe Cabinet Damage, Complete Replacement

Core Technical Points of HXGN-12 Retrofit

Circuit Breaker Selection

Original Cabinet / Switchgear	Replacement VCB	Features
HXGN-12 (Load Switch Type)	VS1-12	High versatility, compatible with ZN63A
HXGN-12 (Old-style Circuit Breaker)	ZN63A-12	High cost-performance ratio, many retrofit cases
HXGN-12 (Frequency Operation Occasions)	ZN12-12	Long mechanical life (30,000 cycles)