High-Performance 20ka Circuit Breaker for Electrical Safety Solutions
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Product Highlights
- High Short-Time Withstand Current: Capable of withstanding 20kA or 25kA short-time current for 4 seconds.
- Robust Mechanical Life: Main circuit offers 5000 cycles; grounding circuit offers 2000 cycles.
- Comprehensive Certifications: Meets ISO9001, GB3804-2004, and GB16926-1997 standards.
- Flexible Customization Options: Supports full customization, minor customization, and design-based customization.
- Eco-Friendly Packaging: Uses recyclable honeycomb paperboard and high-strength corrugated materials.
- Brand Logo Customization: Allows printing of company logos and exclusive design patterns on cartons.
- OEM and ODM Services: Available for manufacturers seeking original design or manufacturing support.
Product Attributes
- Customization
- Available
- Type
- High-voltage
- Structure
- Three-column Disconnector
- Model NO.
- Saler-12
- Installation
- Fixed Installation
- Operation
- Manual or Electric Operation
- Grounding Mode
- Grounding
- Movement Mode
- Rotary Opening and Closing Movement
- Number of Poles
- Three Pole
- Grounding
- Single Grounding or Double Grounding
- Series
- Single-Stage
- Run
- Normally Closed or Normally Open Operation
- Switching Mode
- Mechanical Opening and Closing
- Structure of Operating
- Spring Energy Storage
- Certification
- ISO9001, GB3804-2004, GB16926-1997
- Rated Frequency
- 50Hz
- Rated Current
- 630A
- Rated Short-Time Withstand Current
- 20/25ka
- Rated Peak Withstand Current
- 50ka
- Rated Short-Circuit Duration
- 4s
- Rated Short Circuit Closing Current
- 50ka
- Theoretical Operation
- 5000 Frequency
- Transport Package
- Carton
- Specification
- Customizable
- Origin
- China
- Production Capacity
- 1000 Pieces/Month
- Package Size
- 100.00cm * 60.00cm * 30.00cm
- Package Gross Weight
- 30.000kg
Shipping
- Shipping Cost:
- Contact the supplier about freight and estimated delivery time.
Online Trading Protection
- Payment Guarantee
-
Platform-protected payments with refund support for eligible order issues.
- Platform Logistics
- Clearer shipment tracking with platform-supported logistics.
- Inspection Service
- Optional pre-shipment inspection for quality and quantity checks.
- After-Sales & Dispute Handling
- Platform-assisted dispute resolution, including refunds or returns when applicable.
Only orders placed and paid through Made-in-China.com Secured Trading are eligible for payment protection and the corresponding platform services.
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Product Description



Content | Company | Technical parameter |
Rated frequency | HZ | 50 |
Rated current | A | 630 |
Rated short-time Withstand current | KA | 20/25 |
Rated peak withstand current | KA | 50 |
Rated short-circuit | s | 4 |
Rated short circuit closing current | KA | 50 |
Theoretical operation | frequency | 5000 |
Main circuit: 630A-20kA (4S), 25kA (3S); mechanical life: 5000 cycles;
Grounding circuit: 20kA(2S); mechanical life: 2000 cycles.
Temperature: -40°C to +140°C; daily humidity ≤ 90%, monthly average ≤ 90%;
Sites with shock, vapor, chemical corrosion, salt fog, dust, dirt, fire affecting performance aren't suitable for explosive installations.



In2024, driven by an enduring pursuit of technological innovation, the core team returnedto the industry with their accumulated expertise. They established a new production basein Nantong, Jiangsu, launching a new chapter of brand upgrading under the name "Nan-tong Saler Electric."As a rising force in the feld of electrical manufacturing, the company specializes in produc-ing power equipment,electrical components, and insulating accessories. Our products areexported to countries such as Italy, Poland, and Malaysia, and are widely used in newenergy power stations, urban power grid renovations, rail transit, and industrial and miningenterprise power distribution systems. They are distinguished by their superior insulation,excellent weather resistance, and long service life. The products have passed relevant na-tional inspections and certifications, meeting the requirements of both IEC and GB standards.
Our company offers variety of products which can meet your multifarious demands. Weadhere to the management principles of "quality first, customer first and credit-based"since the establishment of the company and always do our best to satisfy potential needsof our customers. Our company is sincerely willing to cooperate with enterprises from allover the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.





1.Customized Cartons, Precision Match
Tailored Solutions: We offer customized carton services in variousspecifcations and sizes. By designing the most suitable packagingstructure based on product characteristics (such as shape, weight,fragility, etc.), we ensure maximum space utilization and optimizedshipping costs.
Robust & Durable:Constructed from high-strength corrugatedmaterial, our cartons are exceptionally sturdy. They effectivelyresistcompression and impact, providing solid foundational protectionfor your goods.
2.Brand Exclusive, Highlighting Value
Visual Identity: Support for personalized logo customization! Youcan print your company logo, brand slogan, or exclusive designpatterns on the carton surface, turning the packaging into awalking billboard for your brand.
Core Protection: We utilize honeycomb paperboard as the corecushioning material. Its unique honeycomb structure possessessuperior compression resistance, shock absorption, and energydissipation properties, providing comprehensive safety for fragile,precision, or high-value products.
4. Eco-Friendly Materials, Recyclable
Green Concept: All packaging materials used in our products arerecyclable. By balancing safety with sustainability, we help business-es practice green initiatives.
5.Transportation and Storage RecommendationsAvoid heawy pressure, moisture, and high temperatures. Stack nomore than 3 layers. Suitable for sea, land, and air freight.



About the Supplier
This supplier has been audited by SGS. Verify the report on the official SGS website with ID "QIP-ASI264097". Items marked "" are certified.
Company Profile
Orporate Profile of Nantong Saler Electric Co., Ltd.
Tracing its roots back to Shanghai Saler Electric Co., Ltd., founded in Songjiang District, Shanghai in 2007, Nantong Saler Electric Co., Ltd. has been deeply engaged in the fields of power equipment, electrical components, and insulating accessories for 15 years. Having completed its initial strategic development phase, the company strategically withdrew from the market in 2018 to consolidate resources and refine its technical capabilities.
In 2024, fueled by an unwavering commitment to technological innovation and leveraging its accumulated industry expertise, the core team returned to the industry, establishing a state-of-the-art production base in Nantong, Jiangsu Province. Under the renewed brand identity of "Nantong Saler Electric," the company embarked on a transformative journey of brand revitalization and industrial upgrading, positioning itself as a rising powerhouse in the electrical manufacturing sector.
As a leading innovator in electrical equipment manufacturing, Nantong Saler specializes in the research, development, and production of advanced power equipment, precision electrical components, and high-performance insulating accessories. Our product portfolio includes intelligent ring main units (RMUs), medium and high-voltage vacuum circuit breakers, composite insulators, dry-type transformers, sensors, relays, surge arresters, and more. Engineered with cutting-edge technologies such as nano-modified insulation materials, vacuum arc extinguishing systems, and environmental resilience designs, our products boast exceptional electrical insulation, superior weather resistance, and extended service life, ensuring reliable operation even in extreme conditions.
Global Reach & Application Domains:
Our solutions are exported to over 10 countries, including Italy, Poland, Malaysia, and others, serving critical infrastructures such as new energy power plants, urban smart grid renovations, rail transit power systems, and industrial/mining power distribution networks. Rigorously tested and certified to meet stringent IEC 62231, GB/T 11022, and other international/national standards, our products embody global compliance and quality assurance.
Quality Assurance & Service Ecosystem:
Guided by the principles of "Quality First, Customer-Centricity, and Integrity-Driven," the company has implemented ISO 9001 and ISO 14001 management systems, ensuring end-to-end quality control from raw material inspections to finished product testing. Leveraging digitalized workshops and intelligent testing equipment, we achieve full traceability of product parameters and process transparency. Furthermore, our global customer service network provides tailored solution design, installation guidance, preventive maintenance training, and 24/7 emergency support, aligning technical assistance with diverse customer requirements.
Global Collaboration Vision:
Embracing the trends of economic globalization, Nantong Saler actively seeks international collaborations with power enterprises, energy institutions, and research bodies. Through participation in global power equipment exhibitions, establishment of multinational technical alliances, and joint laboratories, we facilitate knowledge sharing and resource synergies. Our commitment is to become a trusted partner in the global power infrastructure ecosystem, fostering collaborative innovation for safer, more efficient, and sustainable energy solutions.
Forward Outlook:
Positioning itself at the forefront of the new energy system revolution and digital energy transformation, Nantong Saler will escalate R&D investments in smart grid equipment, new energy integration components, and next-generation insulation technologies. Over the next 5-10 years, the company aspires to emerge as an internationally competitive electrical manufacturing brand, contributing Chinese ingenuity to the global energy transition.
About Our Factory & Business Background
-
Business Type
- Manufacturer/Factory & Trading Company
- Address
- Building 9, No. 56 Jiangbin Road, Binhai Industrial Park, Qidong City, Nantong, Jiangsu, China
-
Plant Area
- 2700 square meters
-
Number of Employees
- 17
-
Registered Capital
- 1,000,000 RMB
-
Terms of Payment
- LC, T/T, D/P, PayPal, Western Union, Small-amount payment
-
International Commercial Terms(Incoterms)
- FOB, CIF, CFR, EXW
-
Average Lead Time
-
Peak Season Lead Time: within 15 workdays
Off Season Lead Time: within 15 workdays -
Nearest Port
- Shanghai Port
-
Minimum Order Quantity
- 100 Sets
-
Supply Chain Partners
- 12
Our Production Capability & Technical Expertise
-
Main Products
- Epoxy Resin Insulating Parts
-
Production Lines
- 1
-
Production Machines
- Mixing Machine, Injection Molding Machine, Drying Machine
-
QA/QC inspectors
- 1 people
-
Inspection Type for Finished Products
- 100% inspection(Visual inspection & Function inspection)
-
Inspection Method for Finished Products
- Have instructions and uniformly followed
-
Customization Options
- Customization from Samples, Customization from Designs, Full Customization, Minor Customization, Flexible customization
-
ODM Service Available
- Yes
-
OEM Service Available
- Yes
-
R&D Engineers
- 1 people
-
Traceability of Raw Materials
- Yes
Our Industry Experience & Global Business Record
-
Year of Establishment
- 2024-10-18
-
Export Year
- 1 year
-
Main Markets
- Domestic
-
Repeat Buyers Choice
- 80%~100%
-
Number of Foreign Trading Staff
- 2
-
Overseas Agent/Branch
- No
-
New Products Launched in Last year
- No
Our Certifications, Standards & Industry Recognition
-
Cooperated with Fortune 500
- No
FAQ
- What is the rated short-time withstand current?
- The rated short-time withstand current is 20kA or 25kA.
- What is the mechanical life of the switch?
- The main circuit has a mechanical life of 5000 cycles, while the grounding circuit has 2000 cycles.
- Is customization available for this product?
- Yes, we offer full customization, minor customization, and customization from samples or designs.
- What certifications does the product have?
- The product is certified under ISO9001, GB3804-2004, and GB16926-1997 standards.
- What is the minimum order quantity?
- The minimum order quantity is 100 sets.
- What are the payment terms?
- We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.
- How long is the lead time?
- The average lead time is within 15 workdays for both peak and off-peak seasons.
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Product Groups
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