Product Overview
Our 12kV 630A AC 50Hz Three-Phase Power Distribution Protection Device is a high-reliability electrical component, specifically engineered for three-phase AC power distribution systems with rated voltage 12kV, rated current 630A, and frequency 50Hz. It is especially designed as an ideal protection solution for packaged substations and transformers, widely applied in urban power ring networks, city grid construction and renovation projects, high-rise buildings, and public facilities. With advanced design, reliable performance, and compact structure, this device is optimized for Google search visibility and is a cost-effective choice for international buyers, contractors, and bulk procurement in power infrastructure projects.
Core Features
This 12kV 630A three-phase power distribution device is tailored to meet the protection and distribution needs of modern urban power systems and public facilities, integrating practicality and reliability. Its core features, favored by global procurement partners, include:
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Advanced Design: Adopts state-of-the-art electrical design, ensuring stable performance and compatibility with global 12kV power distribution standards.
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Simple Operation: User-friendly design with intuitive operation, reducing on-site training and operational errors, improving work efficiency.
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Robust Structure: Solid and durable construction, able to withstand harsh working environments and ensure long-term stable operation.
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Sleek Appearance: Smart and compact design, saving installation space and adapting to limited-area scenarios such as high-rise buildings and compact substations.
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Light Weight: Easy to transport, handle, and install, reducing labor and transportation costs for cross-border and on-site projects.
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Complete Functions: Integrates comprehensive protection and distribution functions, fully meeting the needs of packaged substation and transformer protection.
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Fast On-Off Speed: Rapid switching response, effectively isolating faults and protecting power equipment from damage, ensuring uninterrupted power supply.
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High Reliability: Strict quality control and high-quality components ensure low failure rate, minimizing maintenance costs and downtime.
Key Specifications
| Number |
Name |
Unit |
FN18-12D/630 |
FN18-12DR/100-31.5 |
| 1 |
Rated voltage |
KV |
12 |
| 2 |
Rated frequency |
Hz |
50 |
| 3 |
Rated current |
A |
630 |
100 |
| 4 |
1min power frequency withstand volage |
kv |
To ground and interphase42 isolation break48 |
| Lighting impulse resisting voltage |
To ground and interphase75 isolation break85 |
| 5 |
Distance between phases |
mm |
170 |
| 6 |
Rated machine stabling current |
KA |
50 |
|
| 7 |
Rated heat-stabling current |
KA/S |
20/2 |
|
| 8 |
Rated cble chrgig current |
A |
10 |
| 9 |
Rated transfer current |
|
1600 |
| 10 |
Switch-off no-load transformer capacity |
KVA |
1250 |
| 11 |
Rated short-circuit switch-off current(fuse value) |
KA |
|
31.5-50 |
| 12 |
Rated short-circuit controlly current(peak) |
50 |
| 13 |
Rated power load switch-off current |
630 |
|
| 14 |
Earth switch rated heat-stabling current |
KA/S |
16/2 |
| 15 |
Breaking times of rated power load current |
|
100 |
| 16 |
Mechanical life |
2000 |
Key Application Scenarios
This 12kV 630A power distribution protection device is widely used in global urban and public facility power projects, especially suitable for:
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Urban power ring network construction and renovation projects
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High-rise buildings (residential, commercial, office buildings) power distribution systems
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Public facilities (hospitals, schools, airports, stadiums, shopping malls)
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Packaged substation protection and supporting applications
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Transformer protection in medium-voltage power distribution networks
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Urban power grid upgrading and expansion projects
Core Advantages for Global Buyers
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Global Compatibility: Designed for 12kV 630A AC 50Hz systems, compatible with mainstream medium-voltage power grids worldwide, ideal for cross-border procurement.
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Cost-Effective: Light weight reduces transportation and installation costs; simple operation and low maintenance minimize long-term operational expenses.
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Scenario-Oriented: Specifically optimized for urban ring networks, high-rises, and public facilities—meeting the core needs of modern urban power projects.
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High Reliability: Fast on-off speed and robust structure ensure stable operation, reducing fault risks and power outages for end users.
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Easy Procurement: Stable production capacity supports large-volume bulk orders, with factory-direct pricing and on-time delivery for global projects.
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Compact & Practical: Sleek and light design adapts to limited installation space, suitable for high-rise buildings and compact substations.