Low voltage power distribution assemblies

Configurable LV Switchgear for Reliable Industrial Power Distribution

From 0.1kV to 40.5kV, 630–4000A. Factory-tested, project-configured, and delivered with full technical documentation for EPC contractors, panel builders, and industrial owners.

Get Support from EngineersRequest A Technical Quote
12Kv

Rated Voltage

Max 4000A

Rated Current

Max 50KA

Short Circuit

IEC62271-200

Industrial Standard

Configuration

OEM Customizable

FAT Test

Delivery Standard

Technical evaluation

Key Technical Data for Project Configuration

The following table is only a framework for critical performance data for fast project evaluation. The standard configuration range is not a universal promise.

Technical Data Overview

K

Y

N

28

12

Metal armoured type

Metal armoured type

Indoor

Design sequence number

Rated voltage (KV)

ParameterUnitValue
Rated VoltageKV3.6, 6.6, 7.2, 10, 12
Rated FrequencyHz50
Rated Insulation Level1 min Power Frequency
Withstand Voltage Rated		Phase-to-Phase GapKV24, 32, 42
Phase-to-Earth GapKV24, 32, 48
Lightning Impulse
Withstand Voltage
(Peak)		Phase-to-Phase GapKV40, 60, 75
Phase-to-Earth GapKV46, 70, 85
Main Busbar Rated CurrentA630, 1250, 1600, 2000, 2500, 3150, 4000
Branch Bar Rated CurrentA630, 1250, 1600, 2000, 2500, 3150, 4000
Rated Short-time Withstand Current (4s)KA16, 20, 25, 31.5, 40, 50
Rated Withstand Current (Peak Value)KA40, 50, 63, 80, 100, 125
Rated Short-Circuit Breaking CurrentKA16, 20, 25, 31.5, 40, 50
Rated Withstand Current (Peak Value)KA40, 50, 63, 80, 100, 125
Protection (IP)RatingShell IP rating based on the actual installation environment. For dusty or humid environments, we can optimise enclosure protection, ventilation and anti-condensation design accordingly.IP4X (Minimum Customisation Requirement)
Compartment and circuit breaker doors are openIP2X (Minimum Customisation Requirement)
Exact evaluation depends on each project’s final electrical rating and protection levels, the model configuration selected in the engineering documents, and the final factory test report; please contact our engineers for project configuration support.

Switchgear Types & Voltage Range

Switchgear Type

Voltage Range

Common Application

Low Voltage (LV)

Up to 1 KV AC

Buildings, factories, data centres

Medium Voltage (MV)

1 kV – 35 kV

Industrial plants, substations, renewable energy plants

High Voltage (HV)

Above 35 kV

Transmission networks, power plants, substations

LV, MV and HV Switchgear Technical Comparison

Parameter

LV Switchgear

MV Switchgear

HV Switchgear

Voltage Range

Up to 1 kV

1 kV – 36 kV

Above 36 kV

Typical Applications

Buildings, Factories

Substations, Industry

Transmission Networks

Interrupting Medium

Air

Vacuum / SF6

SF6 / GIS

Rated Current

Up to 6300 A

Up to 4000 A

Up to 5000 A

Fault Current Rating

Up to 100 kA

Up to 63 kA

Up to 80 kA

Installation Type

Indoor

Indoor / Outdoor

Outdoor / GIS

Protection Complexity

Basic

Medium

Advanced

Maintenance Requirements

Low

Medium

High

Capital Cost

Low

Medium

High

Typical Users

Commercial Facilities

Utilities & Industry

Transmission Operators

Configure Your Switchgear Around Your System

Cabinet Drawing & Outline Dimensions (mm)

Component selection can be adapted to the electrical specification, protection philosophy, installation environment and approved vendor requirements of the project.

Incoming Breaker

Selected according to rated current, fault level and protection requirements.

Copper Busbar

Sized according to current carrying capacity, temperature rise, and short-circuit requirements.

Protection Relay

Protection and monitoring configured according to project requirements.

Metering

Voltage, current, power and energy monitoring options.

Cable Compartment

Cable entry and termination arranged according to site conditions.

KYN28-12 Key Applications & Operating Conditions

KYN28-12(GZS1) type armoured removable AC metal enclosed switchgear (hereinafter referred to as “switchgear”) is suitable for three-phase AC 50Hz power systems, used to receive and distribute electrical energy and to control, protect and monitor the circuit. The newly developed high-current, high-breaking switchgear can also be used separately as a high-voltage generator outlet.

This product conforms to the standards: GB3906 “3~35kV AC metal enclosed switchgear”, GB/T11022 “High voltage switchgear and control equipment standard common technical requirements”, IEC298 “rated voltage above 1kV 52kV and below AC metal enclosed switchgear and control equipment”.

Installation & Operating Conditions

Ambient air temperature
  • Less than or equal to 40°C 
  • Less than or equal to 35°C on average over 24 hours 
  • Greater than or equal to -5°C ( -25°C on request)
Altitude
  • Less than or equal to 1000 m
  • Above 1000 m, a derating coefficient is applied (please consult us)
Atmosphere
  • No dust, smoke, corrosive or inflammable gas and vapour, or salt
  • Earthquake intensity: Magnitude 8
Humidity
  • Average relative humidity over a 24-hour period ≤ 95%
  • Average relative humidity over a 1-month period ≤ 90%
  • Average vapour pressure over a 24-hour period ≤ 2.2 kPa
  • Average vapour pressure over a 1-month period ≤ 1.8 kPa
SSE KYN28-12 Features
  • Equipped with a ±0.1mm high-precision line control system, it achieves millimetre-level control of switchgear bending and assembly, achieving a component standardisation rate of ≥99% and a dimensional qualification rate exceeding 99.5%.
  • The cabinet body is constructed from 316L stainless steel with a nano-ceramic coating and is processed, formed, and assembled using high-strength bolts, nuts, and rivets.
  • Compatible with various brands of circuit breakers, including components from brands such as ABB and Siemens, including the domestically produced ZN85-40.5 (3AV3) vacuum circuit breaker and Schneider’s HVX series, to meet diverse user needs.
  • Metal partitions separate each functional compartment in the switchgear, and independent pressure-relief ducts are provided.
  • The circuit breaker, earthing switch, and other operations can be performed with the high-voltage compartment door closed, enabling closed-door operation.
  • Full-Scenario Verification and Intelligent Logistics System: Cabinet Parallel Testing – Real-World Simulation. Full-Scenario Simulation Testing: Load Simulation, Emergency Operation Verification (Opening and Closing Response Time ≤ 20ms), Multi-Device Linkage Testing (Protection Device/Transformer Coordination Error <1%), Triple Performance Verification: Passed a 72-hour full-load temperature rise test and a mechanical lifespan test of ≥10,000 cycles

Switchgear is typically an enclosed system designed to distribute power safely, often connecting to transformers or motor control centres (MCCs), and may include devices such as variable speed drives or power distribution products. Choosing the correct switchgear involves more than matching voltage ratings.

Switchgear Applications Selection Reference

Application

Recommended Switchgear

Commercial Buildings

LV Switchgear

Data Centers

LV Switchgear

Hospitals

LV Switchgear

Manufacturing Plants

LV / MV Switchgear

Mining Operations

MV Switchgear

Renewable Energy Plants

MV Switchgear

Utility Distribution Networks

MV Switchgear

Substations

MV / HV Switchgear

Transmission Networks

HV Switchgear

Power Generation Plants

HV Switchgear

Indoor vs Outdoor Switchgear Selection Reference

Standard

Indoor Switchgear

Outdoor Switchgear

Space Availability

Limited Space

Large Sites

Environmental Protection

Excellent

Moderate

Maintenance Access

Moderate

Excellent

Initial Investment

Higher

Lower

Urban Projects

Recommended

Less Common

Utility Substations

Possible

Common

Environmental Selection Guide

Environment

Recommended Technology

Industrial Plant

Metal-Clad Switchgear

Coastal Area

Corrosion-Resistant Switchgear

Desert Region

Dust-Protected Switchgear

Urban Substation

GIS Switchgear

Renewable Energy Plant

Vacuum Switchgear

High Humidity Area

Sealed GIS Switchgear

Heavy Pollution Zone

GIS / Metal-Enclosed Switchgear

Find Your Path

Customer Role

First Question

What Details Should Care

EPC / System Integrator

Can you meet project drawings, schedule, site standards, and grid-connection requirements?

Project delivery workflow, lead time capability, engineering case studies, scope of delivery, selection parameters, layout drawings, certifications

Distribution Contractor

Is the supplier reliable and quality consistent? Is it easy to procure, install, commission and maintain?

Factory capability, quality control, certifications, brand components, configuration limits, installation dimensions, spare parts, manuals, after-sales terms

Plant Owner / End User

Will it run safely and reduce outage and energy-loss risk? Is it easy to maintain?

Application pain points, reliability data, power quality, maintenance convenience, case studies, warranty, remote monitoring

Distributor / Reseller

Can you support a stable product line and give technical backup? Do you offer supply continuity, customisation, and regional cooperation?

Product line coverage, regional partner policy, MOQ, OEM/ODM options, spare parts support, technical training, catalog downloads, lead time

Technical Engineer

Do rated parameters, protection scheme, and configuration match? Does it meet the local grid code and certification requirements?

Voltage/current/IP/short-circuit ratings, single-line diagrams, cabinet configuration, IEC/UL standards, test reports, downloadable data, FAQ

CUSTOMIZATION

Configured to Your Project Requirements

Electrical, mechanical, component, and documentation options can be aligned with your project requirements.
Discuss My Configuration
Electrical
  • Rated Voltage
  • Rated Current
  • Short-Circuit Level
  • Protection Scheme
Mechanical
  • Cabinet Dimensions
  • Cable Entry
  • IP Rating
  • Installation Method
Components
  • Circuit Breaker
  • Protection Relay
  • Metering
  • Communication
Documentation
  • Single-Line Diagram
  • GA Drawing
  • Wiring Diagram
  • Test Report

Tips: Final configuration is confirmed according to approved drawings, project requirements and destination market needs

Applications

Switchgear Projects & Applications

Representative project environments and typical configuration needs for low-voltage and medium-voltage distribution systems.

Project Configuration Discussion
Industrial Power Distribution

Reliable power distribution for manufacturing and industries.

0.4-12Kv

Voltage

~4000A

Current

China

Country

Factory

Application

  • Overline
View Details
Mining Power Distribution

Stable and robust power supply for mining and mineral processing operations.

6-35Kv

Voltage

~4000A

Current

China

Country

Quarry

Application

  • Overline
View Details
Industrial Power Distribution

Quality power distribution for commercial buildings and public infrastructure.

0.4-25Kv

Voltage

~2500A

Current

China

Country

Buildings

Application

  • Overline
View Details
Why Choose SSE Electric

Quality Control You Can See Before Shipment

Capabilities that reduce your project risk, not just features on a spec sheet. Switchgear procurement often breaks down when drawings, fault levels, separation forms, protection requirements and site constraints are handled in isolation. We convert those inputs into an accountable, review-ready solution.

Verified Components Before They Enter Your Switchgear

Every reliable switchgear starts with controlled incoming materials. We inspect critical components for quality—checking ratings, quantities, appearance, certificates, and supplier traceability—before assembly to avoid hidden issues.
01
Component Model Check

Qualified and traceable components from leading brands.

02
Component Model Check

Qualified and traceable components from leading brands.

03
Component Model Check

Qualified and traceable components from leading brands.

04
Component Model Check

Qualified and traceable components from leading brands.

Verified Components Before They Enter Your Switchgear

Every reliable switchgear starts with controlled incoming materials. We inspect critical components for quality—checking ratings, quantities, appearance, certificates, and supplier traceability—before assembly to avoid hidden issues.
01
Component Model Check

Qualified and traceable components from leading brands.

02
Component Model Check

Qualified and traceable components from leading brands.

03
Component Model Check

Qualified and traceable components from leading brands.

04
Component Model Check

Qualified and traceable components from leading brands.

Verified Components Before They Enter Your Switchgear

Every reliable switchgear starts with controlled incoming materials. We inspect critical components for quality—checking ratings, quantities, appearance, certificates, and supplier traceability—before assembly to avoid hidden issues.
01
Component Model Check

Qualified and traceable components from leading brands.

02
Component Model Check

Qualified and traceable components from leading brands.

03
Component Model Check

Qualified and traceable components from leading brands.

04
Component Model Check

Qualified and traceable components from leading brands.

See How SSE Prepares Switchgear for International Delivery

Every reliable switchgear starts with controlled incoming materials. We inspect critical components for quality—checking ratings, quantities, appearance, certificates, and supplier traceability—before assembly to avoid hidden issues.
01
Component Model Check

Qualified and traceable components from leading brands.

02
Component Model Check

Qualified and traceable components from leading brands.

03
Component Model Check

Qualified and traceable components from leading brands.

04
Component Model Check

Qualified and traceable components from leading brands.

Verified Components Before They Enter Your Switchgear

Shipment isn’t simply switchgear dispatched. Every step follows a controlled process covering final verification, export-grade protection, document readiness, and coordinated logistics—ensuring your equipment arrives intact, identifiable, and easy to install.
01
Component Model Check

Qualified and traceable components from leading brands.

02
Component Model Check

Qualified and traceable components from leading brands.

03
Component Model Check

Qualified and traceable components from leading brands.

04
Component Model Check

Qualified and traceable components from leading brands.

Specific Visual Evidence

Global Electrical Industry Partners & Customers

Provide customers with production line technical consultation, engineering design, design selection, engineering budgeting, factory automation, full-process training, installation, commissioning, and turnkey solutions for the entire factory.

Know More
Engineer Online

+86 123 456 7890

Quality & Compliance

Standards & Certifications

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  • IEC 62271-200
  • IS09001
  • CE Certificate
  • FAT Report
  • CE Certificate
  • FAT Report

Sample documents available upon request.

View Full Certificates
Quality & Compliance

Standards & Certifications

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Built for Fast, Safe Grid & Plant Integration

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* fields help us return a quick response to you as quickly as possible.

Yes. We can tailor configurations to your voltage, electricity power quality, and specific requirements. We have experience in designing customised solutions for power generation plants, industrial workshops, data centres, hospitals, etc. We have helped numerous enterprises and institutions resolve issues such as voltage fluctuations, low power factor, and harmonic distortion.

Standard units can be delivered within 3-4 weeks from order confirmation. Custom configurations typically require 5-6 weeks. We offer phased delivery for large projects. We maintain a 98% on-time delivery rate, well above the industry average.

Warranty terms are defined in the contract: all products have a 24-month standard warranty. Our 24/7 technical hotline and after-sales customer service can provide immediate remote support. We also offer operation and maintenance training. We can arrange global dispatch of critical spare parts within 48 hours. Engineers are available for on-site supervision or remote consultation.

Email

Info@businessname.com

WhatsApp/WeChat

+86 123 456 78900

Business Hours

9:00 AM – 6:00 PM GMT+08:00

Location

Henan Province, China