Sobre Changzhou Tuoxin Electric Co., Ltd.
Our company currently has 3 senior engineers, 1 senior consultant, 5 engineers, and 18 technical personnel.
We specialize in the production of high-voltage switchgear, including KYN28 and XGN15 series; low-voltage switchgear, including GBD, MNS, GGD, GXL, XL, and XLW series; YB series box-type substations; various custom non-standard electrical control cabinets; PZ30 modular terminal lighting distribution boxes; XJM series metering meter boxes; and bus ducts of various specifications.
Our products are known for stable and reliable quality, advanced manufacturing processes, and have received positive feedback from customers. To further improve product quality, we continuously introduce advanced technologies and experienced technical professionals while actively expanding the market. We strictly implement comprehensive quality management in accordance with the ISO9001:2000 quality management system standards. Our complete switchgear and low-voltage electrical products have obtained CCC certification from the China Quality Certification Centre, and product quality has been verified by the Changzhou Technical Supervision Bureau.
The company adheres to the business philosophy of “Customer Satisfaction as the Principle, Customer Requirements as the Direction, Product Quality as the Foundation, and Continuous Improvement as the Guarantee.” Upholding the concept of “Integrity First,” we continuously improve our management standards and engineering capabilities to provide customers in the power industry with professional, high-quality, and satisfactory services, creating a better future together.
Our company philosophy: Quality First, Strict Management, Advanced Technology, and Sincere Service.
We sincerely welcome customers to use “Tuoxin” products. Tuoxin is willing to cooperate extensively with friends from all over the world on the basis of equality, mutual benefit, and practical cooperation. Guided by our commitment to customer satisfaction, product quality, and continuous improvement, we are dedicated to providing premium products with competitive prices and excellent service. We warmly welcome your inquiries, visits, and cooperation.
Nossos produtos
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Cable Tray
Modelo: XQJ LQ
Parâmetros: I. Classification & Model Code
Trough type (C): Fully enclosed, dust & shielding; GQJ-C(steel), LQJ-C(aluminum), BQJ-C(FRP)
Perforated tray type (P): Ventilated bottom for heat dissipation; GQJ-P, LQJ-P
Ladder type (T): Ladder rungs, superior ventilation; GQJ-T, LQJ-T
Fire-resistant type (FQJ), fire-proof type, composite type (FBQJ)
II. Dimension Specifications
Standard Width B: 100, 200, 300, 400, 500, 600, 800, 1000mm
Standard Side Height H: 50, 75, 100, 150, 200, 300mm
Standard Section Length: 2m, 3m; custom length 0.5/1/1.5m available
National Standard Plate Thickness:
Trough & perforated tray: 1.2, 1.5, 1.8, 2.0, 2.5, 3.0mm
Ladder type: ≥1.5mm; heavy load extra thick 2.5~3.0mm
Matching Accessories: Straight section, horizontal elbow, vertical elbow, tee, cross, reducer, cover, partition, bracket, earth bonding plate
III. Mechanical Load Performance
Load Class: Light duty ≤120kg/m, Medium duty ≤200kg/m, Heavy duty ≤400kg/m
Deflection Limit: Uniform load deflection ≤1/200 of span; concentrated load ≤1/400 of span
Standard Support Span: 1.5~3m for indoor; ≤2m for outdoor & heavy load
Cable Fill Ratio: Power cable ≤40%, control cable ≤50%
IV. Protection & Anti-Corrosion Performance
IP Rating: Indoor trough IP30/IP40; Outdoor waterproof IP54, IP65 (with sealed cover)
Surface Treatment:
Electro-galvanized: Salt spray ≥48h, coating 8~12μm
Hot-dip galvanized: Zinc layer ≥65μm, salt spray ≥1000h for heavy corrosion
Electrostatic powder coating: Coating 60~80μm, salt spray ≥500h
Aluminum anodizing: Oxide film ≥10μm
Fire-resistant tray: Fire endurance 0.5h/1h/2h, fireproof layer ≥12mm
V. Electrical Performance
Electrical Continuity: Continuous bonding, earth resistance ≤0.1Ω, supplied with copper bonding jumper
Insulation (FRP tray): Insulation resistance ≥100MΩ, power frequency withstand voltage 2kV no breakdown
Flame retardancy (FRP): Oxygen index OI ≥32, self-extinguishing after flame removal
VI. Service Environmental Conditions
Ambient Temperature: -20℃ ~ +60℃; fire-resistant type withstand 950℃ short-term
Altitude: ≤2000m; reinforced structure & thicker plate required above 2000m
Relative Humidity: Daily average ≤95%, no condensation; TH type for damp & corrosive atmosphere
Environment: Free of strong corrosive gas, flammable & explosive dust, severe vibration
Enclosed Busway
Modelo: CMC
Parâmetros: I. Rated Electrical Parameters
Rated Operating Voltage: AC 400V/690V
Rated Frequency: 50Hz/60Hz
Rated Current Range: 100A, 250A, 400A, 630A, 800A, 1000A, 1250A, 1600A, 2000A, 2500A, 3150A, 4000A, 5000A
Phase System: 3-phase 3-wire, 3-phase 4-wire, 3-phase 5-wire (3P+N+PE)
Power Frequency Withstand Voltage (1min): 3750V between phases & phase to enclosure, no breakdown or flashover
Insulation Resistance: ≥10MΩ under normal condition (20℃±5℃)
Temperature Rise Limit: Joint ≤70K, Outer Housing ≤55K
Short-Time Withstand Current: 10kA, 20kA, 30kA, 50kA (0.5s/1s)
Plug-in Service Life: ≥200 times
II. Structural & Protection Parameters
Standard Unit Length: 3m per section; custom length 0.5m/1m/1.5m/2m available
IP Protection Class: Indoor IP40/IP43; Outdoor waterproof IP54/IP68
Cooling Mode: Natural air self-cooling
Housing Material: Aluminum alloy / galvanized steel sheet optional
Conductor: T2 pure copper bar with tin/silver plating on contact surface
Installation Type: Horizontal suspension, vertical stand mounting, wall bracket mounting
Accessories: Straight section, plug-in unit, elbow, tee, reducer, expansion joint, end cap
III. Service Environmental Conditions
Ambient Temperature: -10℃ ~ +40℃
Altitude: ≤2000m; derated operation required above 2000m
Relative Humidity: Daily average ≤95%, no condensation or icing (TH type for condensation & mold environment)
Pollution Degree: Class 2; Installation Category III & IV
Environment Requirement: Free of corrosive gas, flammable & explosive dust, severe vibration
Low Voltage Distribution Box
Modelo: PZ30
Parâmetros: Rated Voltage of Main Circuit：220V, 380V
Rated Insulation Voltage：400V
Rated Frequency：50Hz
Rated Current：≤ 125A
Protection Degree：IP30
Power Distribution Switchgear
Modelo: JX、JXF
Parâmetros: Rated Voltage: 380/220V
Frequency: 50Hz
Rated Current: 100A, 200A, 400A
Leakage Operating Current: ≤30mA
Leakage Operating Time: ≤0.1s
Low Voltage Cable Distribution Box
Modelo: DFW
Parâmetros: Model：DFW
Product Type：Outdoor Type
Rated Operational Voltage (Ue)：400V / 380V
Rated Insulation Voltage (Ui)：690V
Rated Frequency (fn)：50Hz
Rated Impulse Withstand Voltage (Uimp)：6kV
Overvoltage Category：Category III
Material Group：Group IIIa
Pollution Degree：Degree 3
Electrical Clearance：≥10mm
Creepage Distance：≥12.5mm
Rated Current of Complete Set (InA)：630A
Rated Current of Main Busbar (InA)：100A ~ 630A
Rated Short-Time Withstand Current of Main Busbar (Icw)：15kA ≤ Icw ≤ 20kA
Rated Peak Withstand Current of Main Busbar：40kA
Type, Model & Frame Rated Current of Main Switch (Inm)：Disconnector NH40-1000/3, 1000A
Rated Current of Main Switch：1000A
Number of Outgoing Circuits：3 Circuits
Rated Current (Inc) & Rated Limited Short-Circuit Current (Icc) of Outgoing Circuits：C1 Circuit: 180A, 20kA；C2~C3 Circuits: 225A, 20kA
Rated Current, Icu & Ics of Protection Devices for Outgoing Circuits：C1 Circuit: 200A, 50kA, 25kA；C2~C3 Circuits: 250A, 50kA, 25kA
Enclosure Protection Degree (IP Rating)：IP54 / IP44 / IP34D
Rated Diversity Factor (RDF)：1
Insulation Material & Heat Resistance Grade：DMC, Class E
Power Distribution Switchgear
Modelo: ATS
Parâmetros: I. Rated Electrical Parameters
Rated Voltage: AC380V/220V, three-phase four-wire / single-phase
Rated Frequency: 50Hz
Rated Current Specifications: 63A, 100A, 160A, 200A, 250A, 400A, 630A
Transfer Time: Conventional type ≤2s, fire-fighting type ≤0.25s
Short-time Withstand Current: 10kA, 15kA
Transfer Mode: Automatic/manual transfer; automatic switching upon undervoltage, phase loss and overvoltage
Protection Functions: Short-circuit, overload, undervoltage, overvoltage and phase loss protection
II. Cabinet Structural Parameters
Protection Degree: Indoor IP30; rainproof outdoor type IP44
Installation Type: Wall-mounted, floor-standing
Cable Entry & Exit: Top-in top-out, bottom-in bottom-out, side-in optional
Control Circuit: DC24V / AC220V control power supply
III. Service Environmental Conditions
Ambient Temperature: -10℃ ~ +40℃
Altitude: ≤2000m; derated operation required for higher altitude
Relative Humidity: Daily average ≤95%, no condensation or icing
Application Environment: Free of corrosive, flammable and explosive gas & dust, without severe vibration
Power Distribution Switchgear
Modelo: XL AC
Parâmetros: I. Rated Electrical Parameters
Rated Operating Voltage: AC 380V/220V, three-phase four-wire / single-phase
Rated Frequency: 50Hz
Rated Incoming Current: 100A, 200A, 400A, 630A
Rated Short-time Withstand Current: 10kA, 15kA
Protection Mode: Overload protection, short-circuit protection, residual current protection (optional)
Wiring System: TN-S, TN-C-S
II. Cabinet Structural Parameters
Protection Degree: IP30 (standard indoor type); IP44 for outdoor version
Installation Type: Wall-mounted, floor bracket mounted
Door Type: Single door
Cable Entry & Exit Mode: Top in & top out, bottom in & bottom out, side in & side out optional
III. Material & Internal Configuration
Cabinet Main Material: Cold-rolled steel sheet / galvanized steel sheet with electrostatic plastic spraying
Conductive Components: T2 pure copper busbars with tin plating
Insulating Parts: Flame-retardant plastic insulation bases, epoxy partition boards
IV. Service Environmental Conditions
Ambient Temperature: -10℃ ~ +40℃
Altitude: ≤2000m; derated operation required for altitude above 2000m
Relative Humidity: Daily average ≤95%, no condensation or icing
Environment Requirements: Dry indoor space, free of corrosive, flammable and explosive gas/dust, without severe vibration
Variable Frequency Control Cabinet
Modelo: VFD Control Cabinet
Parâmetros: I. Rated Electrical Parameters
Rated Input Voltage: Three-phase 380V±10%
Input Frequency: 50Hz
Applicable Motor Power Range: 0.75kW ~ 630kW
Rated Output Voltage: 0～380V
Output Frequency Range: 0～50/60Hz
Overload Capacity: 150% rated current for 60s; 180% rated current for 10s
Control Mode: Vector Control / V/F Scalar Control
Protection Degree: Cabinet IP30, Frequency Converter Main Unit IP20
II. Cabinet Structural Parameters
Cabinet Material: Galvalume steel sheet with electrostatic plastic spraying
Installation Type: Indoor floor-standing / wall-mounted
Cooling Mode: Air duct forced air cooling
Operation Panel: Local touch screen / key panel, supporting remote 485 communication
III. Control & Communication Parameters
Communication Protocol: Modbus-RTU
Analog Signals: 0–10V, 4–20mA
Digital Signals: Multi-channel DI digital input, DO relay output
Functions: Soft start, constant pressure water supply, multi-speed operation, fault alarm, frequency conversion / power frequency switching
IV. Service Environmental Conditions
Ambient Temperature: -10℃ ~ +40℃
Altitude: ≤1000m (Derated operation required for higher altitude)
Relative Humidity: ≤90%, no condensation
Application Environment: Free of corrosive gas, flammable and explosive dust and severe vibration
Low Voltage Electrical Switchgear
Modelo: GGD
Parâmetros: Rated Insulation Voltage：660V
Rated Operational Voltage：380V / 660V
Rated Current：600–1600A
Rated Short-Time Withstand Current (1s)：50kA
Rated Short-Time Peak Current：80kA
Protection Degree (IP Rating)：IP30
Low Voltage Electrical Switchgear
Modelo: GCK
Parâmetros: Rated Insulation Voltage：660V
Rated Operational Voltage：380V / 660V
Rated Current：600–1600A
Rated Short-Time Withstand Current (1s)：50kA
Rated Short-Time Peak Current：80kA
Protection Degree (IP Rating)：IP30
Low Voltage Electrical Switchgear
Modelo: GCS
Parâmetros: Rated Insulation Voltage：660V
Rated Operational Voltage：380V / 660V
Maximum Operating Current of Main Busbar：1600~4000A
Short-Time Withstand Current of Main Busbar (1s)：100kA
Short-Time Peak Current of Main Busbar：120kA
Maximum Operating Current of Vertical Busbar (Distribution Busbar)：1600A
Short-Time Peak Current of Vertical Busbar (Distribution Busbar)：Standard Type: 80kAReinforced Type: 100kA
Protection Degree (IP Rating)：IP30
Low Voltage Electrical Switchgear
Modelo: MNS
Parâmetros: Rated Insulation Voltage：660V
Rated Operational Voltage：380V / 660V
Maximum Operating Current of Main Busbar：1600~4000A
Short-Time Withstand Current of Main Busbar (1s)：100kA
Short-Time Peak Current of Main Busbar：120kA
Maximum Operating Current of Vertical Busbar (Distribution Busbar)：1600A
Short-Time Peak Current of Vertical Busbar (Distribution Busbar)：Standard Type: 80kAReinforced Type: 100kA
Protection Degree (IP Rating)：IP30
Complete Electrical Switchgear
Modelo: YBW-12
Parâmetros: Rated Voltage：12kV
Rated Current (High Voltage Side)：400–630A
Rated Current (Low Voltage Side)：100–2500A
Rated Capacity：50–1600kVA
Protection Degree (IP Rating) - High Voltage Side：IP3X
Protection Degree (IP Rating) - Transformer Compartment：IP2X
High Voltage Electrical Switchgear
Modelo: XGN15-24
Parâmetros: I. Rated Electrical Parameters
Rated Voltage: 24kV
Rated Frequency: 50Hz
Rated Current: 630A, 1250A
Rated Short-time Withstand Current (4s): 20kA, 25kA
Rated Peak Withstand Current: 50kA, 63kA
Rated Short-circuit Breaking Current: 20kA, 25kA
Rated Short-circuit Making Current: 50kA, 63kA
Short-time Withstand Current of Earthing Switch: 20kA/4s
II. Insulation & Gas Parameters
Insulating Medium: Sulfur Hexafluoride (SF₆) gas
Rated Filling Pressure (20℃): 0.04～0.06MPa (gauge pressure)
Minimum Operating Pressure: 0.02MPa
Annual Gas Leakage Rate: ≤0.5%
Power Frequency Withstand Voltage (Phase-to-Earth / Phase-to-Phase): 65kV/1min
Lightning Impulse Withstand Voltage (Peak Value): 125kV
III. Mechanical Parameters
Mechanical Operating Life
Load Switch: ≥5,000 operations
Earthing Switch: ≥2,000 operations
Operating Mode: Manual spring operation, electric operation (optional)
Protection Degree
Inside Gas Tank: IP67
Outside Cabinet: IP34D
IV. Service Environmental Conditions
Ambient Temperature: -25℃ ～ +40℃
Altitude: ≤2000m (Customized version required for higher altitude)
Relative Humidity: Daily average ≤95%, monthly average ≤90%
Installation Location: Indoor installation, free of flammable, explosive and corrosive gases
High Voltage Electrical Switchgear
Modelo: XGN15-12
Parâmetros: XGN series switchgear is a metal-enclosed fixed-type switch equipment. It is applicable to three-phase AC power systems with a rated frequency of 50 Hz and a rated voltage ranging from 3.6 kV to 12 kV for power receiving and distribution
High Voltage Electrical Switchgear
Modelo: KYN28-24
Parâmetros: Rated Voltage：24 kV
Rated Frequency：50/60 Hz
Rated Insulation Level：1 min Power Frequency Withstand Voltage: 65 kV / 79 kV；Lightning Impulse Withstand Voltage: 125 kV / 145 kV；Auxiliary Control Circuit Power Frequency Withstand Voltage: 2000 V
Rated Current：630, 1250, 1600, 2000, 2500, 3150 A
Rated Short-circuit Breaking Current：20, 25, 25, 31.5 kA
Rated Short-circuit Making Current：50, 63, 63, 80 kA
Rated Short-time Withstand Current：20, 25, 25, 31.8 kA
Rated Peak Withstand Current：50, 63, 63, 80 kA
Auxiliary Control Circuit Rated Voltage：DC or AC 110/220 V
Protection Degree：IP4X
High Voltage Electrical Switchgear
Modelo: KYN28-12
Parâmetros: Rated Voltage：12kV
Rated Current：630 – 4000A
Rated Frequency：50Hz
Rated Short-Circuit Breaking Current：20–50kA
Rated Short-Circuit Making Current：50–125kA
Rated 4s Short-Time Thermal Withstand Current：20/25/31.5/40/50kA
Rated Peak Withstand Current：50/63/80kA
1min Power Frequency Withstand Voltage：Phase-to-Phase & Phase-to-Earth: 42kV；Isolation Break: 48kV
Lightning Impulse Withstand Voltage：Phase-to-Phase & Phase-to-Earth: 75kV；Isolation Break: 85kV
Protection Degree (IP Rating)：Enclosure: IP4X；With Circuit Breaker Door Open: IP2X
Galeria da empresa
Certificações e prêmios
Histórias de sucesso
1. Domestic Customers Power & Energy End Users State Grid, China Southern Power Grid, power design institutes, new energy enterprises (PV, energy storage, wind power, EV charging operators), thermal power plants, mines and metallurgical enterprises. EPC & Electromechanical General Contractors Construction general contractors, municipal engineering companies, rail transit EPC, PV EPC, environmental protection engineering firms. Industrial Manufacturing Factories Auto industrial parks, lithium bat
1. Safety Achievements
Multi-level protection against short circuit, overload, leakage, phase loss, arc flash and earth fault cuts off power instantly to avoid electric shock, fire and equipment burnout.
Fire-resistant bus ducts and fire-proof switchgears maintain temporary power supply for fire pumps, emergency lighting, ICU and IDC critical loads during fire accidents.
Outdoor cabinets with anti-condensation, anti-salt spray, dust-proof and pest-proof design eliminate insulation breakdown risks caused by harsh environment.
Customized solutions for high altitude, severe vibration and chemical corrosion greatly reduce unexpected power failure and safety hazards.
2. Operation & Maintenance Efficiency Achievements
Draw-out MNS cabinets and plug-in bus ducts allow independent circuit maintenance without full power cut, greatly shortening downtime.
Intelligent monitoring system via 4G/RS485 collects real-time power data with remote alarm & switching functions, cutting on-site inspection workload.
Centralized XJM metering boxes realize automatic data collection without manual meter reading, saving labor management cost.
Integrated YB box substations require no dedicated power room, cutting construction period by 60% and simplifying maintenance.
3. Energy-saving & Economic Achievements
Automatic reactive power compensation improves power factor, reduces line loss and avoids power surcharge.
Frequency conversion control boxes save 20%~40% power for fans and water pumps.
Compact bus ducts feature lower power loss than multiple cables, reducing long-term energy consumption.
Precise metering system avoids electricity theft and line loss for refined energy management.
4. Project Construction Achievements
Complete set delivery of HV/LV switchgears, box substations and distribution boxes with unified drawings & acceptance documents to reduce communication cost.
Flexible OEM & ODM customization meets domestic and overseas standards, special working conditions and personalized tec
Complete & Globally Recognized Certifications
We own CNAS-accredited ISO 9001/14001/45001 three management systems, CCC certificates and full type test reports. Products comply with CE, SABER, UL and other international standards, with complete bilingual documents for domestic bidding and overseas customs clearance.
One-stop Full-range Supporting Products
Self-manufactured full series including HV/LV switchgears, YB box substations, bus ducts, metering & lighting boxes and non-standard control cabinets. Unified drawings, factory inspection and after-sales service reduce multi-supplier communication costs and shorten project delivery cycle.
Flexible OEM & In-depth ODM Customization
Support OEM private labeling; full ODM solution development based on working conditions, site layout and power demands. Customizable dimensions, protection grades, component brands, control logic, fire resistance, anti-corrosion and intelligent monitoring for PV, industry, real estate and overseas projects.
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Vídeos da empresa e produtos
Introdução da empresa e tour pela fábrica
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Demonstração do produto - Kestrel K-1
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Showcase de inovação tecnológica
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Depoimentos de clientes e histórias de sucesso
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