DC Fuse Link Manufacturer & Exporter Serving The Vietnam Market

Engineered for Utility Solar arrays, Commercial & Industrial Rooftops, and Energy Storage Systems across Binh Duong, Dong Nai, and High-Irradiance Southern Provinces.

Featured DC Protection Lineup

Precision Photovoltaic Fuse Links & DIN-Rail Timing Controls

Direct supply from Liushi's specialized low-voltage production base. Optimized breaking capacity up to 1000V/1500V DC for reliable string isolation and automated control boards.

24+ Years Engineering
5,700m² Factory Footprint
92+ Skilled Specialists
3.3M+ Annual Export (USD)
100% TÜV Assessed QA
Application Engineering

Optimized DC Overcurrent Protection for Vietnam's Grid & Climate

Tropical deployment demands high thermal endurance and precision current interruption. How our DC fuse links perform across Vietnam's demanding environments.

C&I Rooftops in Binh Duong & Dong Nai

Southern Vietnam's manufacturing hubs feature extensive factory rooftops operating under ambient temperatures exceeding 38°C. Our 10x38mm gPV DC fuse links employ silica quartz arc quenching and high-grade silver elements, minimizing nuisance tripping caused by high ambient heat while safeguarding solar arrays from reverse fault currents.

Coastal Solar Farms: Ninh Thuan & Binh Thuan

Vietnam’s high-irradiance coastal provinces pose severe salt-spray and humidity challenges. Encased in reinforced melamine/ceramic casings with corrosion-resistant tinned copper caps, our fuse links and modular holders prevent galvanic oxidation, ensuring low contact resistance across 20-year project cycles.

Battery Energy Storage (BESS) & Telecom Microgrids

With EVN promoting grid stability and self-consumption, battery backup systems require ultra-fast fault clearing. We supply gBat and high-speed DC fuse links engineered to interrupt low overcurrents and extreme short-circuit surges up to 33kA DC without destructive physical ruptures.

Vietnam Renewable Energy Transition: PDP8 and String Architecture Demands

Vietnam's Power Development Plan 8 (PDP8) strongly prioritizes self-consumption rooftop solar, industrial park microgrids, and utility-scale hybrid storage. As system designs migrate from legacy 1000V DC architectures to high-efficiency 1500V DC topologies, the electrical protection threshold changes substantially:

Direct current circuits present no natural zero-voltage crossing point. When a fault occurs in a photovoltaic string, the resulting electrical arc does not extinguish naturally. In tropical regions like Da Nang, Tay Ninh, or Can Tho, where sustained solar irradiation triggers prolonged peak-power states, incorrect fuse coordination can lead to catastrophic thermal runaway in combiner boxes.

Protection Metric Standard IEC 60269-6 Requirement Zhejiang TMB Engineering Baseline Impact for Vietnam Solar EPCs
Rated Operational Voltage 1000V / 1500V DC Up to 1500V DC Continuous Guarantees zero flashover during high Voc winter morning conditions
Rated Breaking Capacity 10kA - 20kA DC 20kA to 33kA at Rated DC Isolates massive parallel string fault currents in commercial solar fields
Ambient Derating Factor Standard at 25°C calibration High-temperature optimized curve (up to 55°C) Eliminates nuisance tripping inside unventilated IP65 roof combiner boxes
Housing Metallurgy Standard ceramic/brass cap High-strength porcelain / silver-plated electrolytic copper Resists contact welding and extreme salt fog degradation

Our gPV fuse elements are engineered using laser-perforated pure silver strips secured inside vitrified ceramic tubes, backfilled with ultra-pure treated quartz sand. This ensures an exact time-current melting profile, protecting delicate crystalline silicon wafers and thin-film panels from reverse feeding.

Why Partner With Us

Direct Manufacturing Strength from Wenzhou’s Premier Electrical Hub

24 years of manufacturing discipline, backed by audited infrastructure and complete supply-chain integration in Liushi Town.

Liushi Supply Cluster Advantage

Situated in Huabei Village, Liushi, our 5,700 m² plant benefits from immediate access to premium copper stampings, technical ceramics, and tooling workshops, securing unbeatable factory lead times.

TÜV Rheinland Assessed

Fully inspected on-site by TÜV Rheinland with certified Quality Management Systems. Every fuse series undergoes dielectric verification, contact resistance audits, and thermal tripping calibrations.

Flexible OEM / Low MOQ

Empowering Vietnamese distributors and panel fabricators with accessible project pricing, custom voltage/amperage branding, and low sample trial MOQs starting from 5 units.

Direct Vietnam Export Routes

Established freight channels via Ningbo/Shanghai to Hai Phong and Ho Chi Minh City ports. Complete documentation provided: CO Form E (for duty-free tariffs), CE, RoHS, and factory test reports.

Procurement Knowledge Base

Frequently Asked Questions by Vietnamese Buyers & EPCs

Essential guidance on importing, specification verification, and certification for solar components in Vietnam.

Can we obtain an ASEAN-China Free Trade Certificate of Origin (Form E) for Vietnam customs clearance?
Yes. As an authorized Chinese exporter, Zhejiang TMB Electric Co., Ltd. provides legally validated Form E certificates for all shipments heading to Cat Lai, Hai Phong, or Da Nang ports. This allows Vietnamese importers and project contractors to benefit from preferential 0% import duty on compliant low-voltage circuit protection devices and fuses.
Why can't standard AC fuses or AC miniature circuit breakers be installed in Vietnam solar DC circuits?
Alternating current (AC) naturally drops to zero voltage 100 or 120 times every second (50/60 Hz), allowing extinguishing devices to quench arcs quickly. DC currents supply continuous energy without zero-crossing. If an AC-rated fuse is used in a DC array, an electrical fault will sustain an internal plasma arc that melts the casing, posing severe fire hazards to rooftop factories. Always specify IEC 60269-6 certified gPV DC fuse links.
How should we size the DC fuse link rating for solar strings in Southern Vietnam's high temperatures?
In standard conditions, the rated current (In) of a string fuse is sized between 1.4 and 1.56 times the photovoltaic module short-circuit current (Isc). In tropical regions like Tay Ninh, Long An, or Binh Duong, combiner box internal temperatures often exceed 50°C. We provide an exact thermal derating curve so engineers can specify 15A, 20A, 25A, or 32A fuse links that will avoid nuisance blowing while maintaining rapid protection against reverse-current scenarios.
Do you support OEM branding and custom PV combiner box assembly for local Vietnamese brands?
Yes. We provide complete private-label OEM manufacturing for distributors and switchboard builders across Vietnam. This covers laser-engraved branding on DC fuse cartridges, silk-screened logos on modular fuse holders, custom-designed packaging, and complete pre-wired IP65 combiner boxes configured with specific DC MCBs, surge arresters (SPD), and fuse bases.
What is the typical shipping lead time to Ho Chi Minh City or Hai Phong?
Because our manufacturing operations are concentrated in Liushi, Wenzhou, finished stock models can be dispatched to Ningbo or Shanghai port within 48 hours. Sea freight transit times to Hai Phong are typically 4–7 days, and to Ho Chi Minh City (Cat Lai) 6–9 days. Air cargo sample delivery via DHL/FedEx to Hanoi or HCMC takes just 2–4 business days.

Looking for Certified DC Fuse Links & PV Protection Devices?

Connect with our technical export engineers to request full datasheets, CE compliance reports, Form E trade verification, and factory-direct pricing for your projects in Vietnam.

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