mC4 Manufacturer in China for 11 years

  nO mOQ - 5 Years Warranty!
Automatic assembly
Spot welding
Metal fittings pressing
Sealing of  the interface
Quality inspection
Packing


Large inventory

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about us
Zhejiang Yuxi Electric Co., Ltd. is an innovative enterprise integrating industry&trade company. We have 11 years of exclusive export business of professional factories, producing high-quality products that meet European standards. The main products are solar connectors (MC4), surge protective devices (SPD), automatic transfer switch(ATS), solar tools, etc. HYOCIE is our newly created brand. We have established cooperative relations with many companies based on the trust of customers and good service.
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Material&semi-finished Products 
T Branch Internal Copper Parts
Y Branch Cable Parts
PPO Shell Parts Male&Female
Internal Leather Rubber Ring
Inner Core Copper Tin/Silver-plated
Fuse Connector Shell Parts
MC4 Connector Series
PPO Material Shell
Solar Connector(HMC4&PVBM)

Solar connector(PV connector/Photovoltaic connector) is single-contact electrical connector commonly used for connecting solar panels, so it's also called solar cable connector. Common rated for 1000V, newer versions are rated at 1500V, which allows longer strings to be created. 

High Quality Type

Code: HMC4, PVBM
Rated current&Vlotage: 30A/45A 1000V/1500V
Protect Degree: 1000V-IP67,1500V-IP68
Suitable Cable: 2.5/4/6mm2,10mm2
Shell Material: PPO
MOQ: 1PCS
Remark: We also produce MC4 on the panel side, please consult our sales.

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Solar T Branch Connector (HMC4T)

Solar branch connector is compatible with 800+ solar module connectors, suitable to solar cable 2.5 mm2,4mm2 and 6mm 2 in solar connection project. Connecting solar panels in series or parallel quickly and reliable connection of the solar cables to the photovoltaic system(solar panels, converters).

High Quality Type

Code: HMC4T-3, HMC4T-4, HMC4T-5, HMC4T-6
Rated Current&Vlotage: 
30A 1000V
Protect Degree: IP67
Suitable Cable: 2.5/4/6mm2
Shell Material: PPO+PC
MOQ:
 1PCS

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Solar Y Branch Connector (HMC4Y)

The waterproof Y-connectors make it possible to parallel wire PV modules with Multi-Contact output cables. Branch connectors are rated for the maximum current of 45 A and the maximum voltage of 1500 VDC. (45A, 1500V needs to be custimzed.)

High Quality Type

Code: HMC4Y-3, HMC4Y-4, HMC4Y-5
Rated current&Vlotage: 30A/45A 1000V/1500V
Protect Degree: 1000V-IP67,1500V-IP68
Suitable Cable: 2.5/4/6mm2,10mm2
Shell Material: PPO
MOQ: 1PCS

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MC4 Fuse&Diode Connector(HMC4F&HMC4D)

Fuse connector(fuse link: 3-30A),  is compatible with solar connector, suitable to solar cable 2.5 mm2, 4mm2 and 6mm2 in solar connection project. Inline 10 x 38 mm DC Fuse to protect the solar panel, quickly. and reliable connection of the solar cables to the photovoltaic system(solar panels, converters).
Code: HMC4F

Solar diode connector is compatible with multi-contact 4 connector, suitable to solar cable 2.5 mm2, 4mm2 and 6mm2 in solar connection project, quickly and reliable connection of the solar cables to the photovoltaic system(solar panels, converters). 
Code: HMC4D

High Quality Type

Rated Current&Vlotage: 30A 1000V
Protect Degree: 1000V
Suitable Cable: 2.5/4/6mm2
Shell Material: PPO
MOQ:
 1PCS

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Solar Tool, Cable, Cable Gland
Make your purchase more convenient
Solar Tools&Tools Kit

Solar wrench, crimping pliers, wire stripper, wire cutter. 
Solar tools kit.


MOQ: 1PCS/Set
There are many combinations of tool kits to choose from.

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MC4 Extension Cable&Solar Cable(PV1-F)

A solar extension cable is very similar in concept to an electrical extension cord. Just like an e xtension cord has a male plug on one end and a female plug on the other, an MC4 extension cable has a male connector on 
one end and a female connector on the opposite end. They are available in many different lengths, can be customized. 
Solar cables are intended for use in photovoltaic power supply systems and similar applications as free-hanging, movable, fixed installation and buried in the ground in constructional covered systems. The cables can be used indoor, outdoor, in hazard explosion areas, in industry, and in agriculture. 

Code: PV1-F
Rated Current:
41 55 70A
Rated Voltage:DC: 1.8KV 
Cable size range: : 2.5/4/6mm2
Shell Material: XLPE
Protect Degree: IP67
Safety Class: II 
MOQ: negotiation

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Cable Gland

Cable glands are commonly defined as mechanical cable entry devices. They are used throughout a number of industries in conjunction with cable and wiring used in electrical instrumentation and automation systems. Cable glands may be used on all types of electrical power, control, instrumentation, data and telecommunications cables. They are used as a sealing and termination device to ensure that the characteristics of the enclosure which the cable enters can be maintained adequately. Cable glands are made of various plastics, and steel, brass or aluminum for industrial usage. Glands intended to resist dripping water or water pressure will include synthetic rubber or other types of elastomer seals. Certain types of cable glands may also serve to prevent entry of flammable gas into equipment enclosures, for electrical equipment in hazardous areas.


MOQ: 1 Bag
Different specifications is different for bag packing, please check our catalog.

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Surge Protective Device(OEM Serive)
We provide professional OEM service.
OEM Shell: New model
Carton: neutral 
Any requirements such as shell color and MOQ, you can contact us directly.
Surge Protective Device(HSP-D40) DC SPD

Solar Surge protective device(DC SPD), is designed to protect equipment connected to DC power supply (or AC) against lightning surges. These devices are based on high energy varistors (MOV) matched with the DC operating voltage (from 12 to 1500 Vdc). The MOV are equipped with internal thermal disconnectors in order to provide safe end of life.

Code: HSP-D40

Protection Level: T2, T1+T2
ln (8 /20 )us ( kA ): 20
lma x (8 /20 )us ( kA ) : 40 
Pole&Rated Voltage: 2P 600V, 800V. 1000V 3P 1000V, 1500V
Iimp: 7KA/12.5KA (T1+T2 only)
MOQ: 1PCS
OEM Service: √
MOQ: Negotiation

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Surge Protective Device(HSP-A40) AC SPD

The surge protection device(AC SPD),  is suitable for TN-S, TN-C-S, TT, IT, etc, power supply system of AC 50/60Hz,<380V, installed on the joint of LPZ1 or LPZ2 and LPZ3. It adopts 35mm standard rail, there is a failure release mounted on the module of surge protection device, When the SPD fails in breakdown for overheat and over-current, the failure release will help electric equipment separate from the power supply system and give the indication signal, green means normal, red means abnormal, it also could be replaced for the module when has operating voltage.

Code: HSP-A40 

Nominal Discharge Current ln μs kA: 5 20 30 40 60
Maximum Discharge Current lmax μs kA: 10 40 60 80 100 
Rated Operating Voltage Un(V~) : 275/385/420VAC

Pole: 1P 2P 3P 4P
Remote Signal: Can be assembled
MOQ: 1PCS
OEM Service: √
MOQ: Negotiation

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Moulded Case Circuit Breaker (AC MCCB)
Moulded Case Circuit Breaker

AC moulded-case circuit breaker (AC MCCB) is one of the new type circuit breakers designed and manufactured by our company by adopting advanced technologies. With insulation voltage, up to 800V,  it is applicable for distribution systems of AC50Hz, rated working voltage 690v and rated working current from 6A to 2000A, used to distribute electric power energy, protect circuits and power equipment against overload, short circuit, Undervoltage, and so on,also can be used for infrequent startup of motor and protect it from overload, short circuit or Undervoltage.

lt is featured with small size, high breaking,short flashover (some specifications have zero flashovers), etc., it is the ideal product for power distribution system.

lt complies with the standards IEC60947-2 and GB14048.2. 

High Quality Type

Not over altitude 2000m Ambient temperature is between -5℃ to+40℃ Withstand the influence of moist air; 
Withstand the influence of smoke fog, salt mist; 
Withstand the influence of fungus; The max. gradient is 22.5℃; 
Working reliable under the condition of normal vibration in the ship; 
Working reliable under the condition of earthquake(4g); 
Working in the medium which not any explosive, not enough dielectric to corrode metal, no gas to damage insulation and electric conduction dust. Working in the place would not be invaded by rain and snow.

Code: HYMB
Rated Current: 10-800A
UI: 690VAC
Rated Voltage Ue: 230/400V
Pole: 2P 3P 4P
MOQ: 1PCS

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Automatic Transfer Switch(ATS)
Automatic Transfer Switch(Q3-63) CB Class

An automatic transfer switch (ATS) is a self-acting, intelligent power switchingdevice governed by dedicated control logic. Upon failure of the connected power source, the ATS will automatically transfer (switch) the load circuit to the other power source (if it is available).
Operation Method:
When the ATS needs to be operated manually, the button switch should be placed in the manual position first. At this time, you can turn the handle to switch between NORMAL or READY power. 
When the ATS needs an automatic operation, the button switch should be in the automatic state first, and the NORMAL power supply has priority. 

High Quality Type

Code: Q3-63
Electrical Appliances Class: CB
Rated Current: 10, 16, 20, 25, 32, 40, 50, 63A
Control Voltage: 22OVAC
Rated Voltage Ue: 400V
Pole: 2P 4P
MOQ: 1PCS

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Automatic Transfer Switch(Q2) CB Class

An automatic transfer switch (ATS) is a self-acting, intelligent power switchingdevice governed by dedicated control logic. Upon failure of the connected power source, the ATS will automatically transfer (switch) the load circuit to the other power source (if it is available).
Operation Method:
When the ATS needs to be operated manually, the button switch should be placed in the manual position first. At this time, you can turn the handle to switch between NORMAL or READY power. 
When the ATS needs an automatic operation, the button switch should be in the automatic state first, and the NORMAL power supply has priority. 

High Quality Type

Code: Q2
Electrical Appliances Class: CB
Rated Current(A): 100, 125, 160, 200, 225, 250, 315, 400, 500, 630, 800, 1000, 1250
Control Voltage: 22OVAC
Rated Voltage Ue: 400V
Pole: 3P 4P
MOQ: 1PCS

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Automatic Transfer Switch(Q5) PC Class

Q5 automatic transfer switch(ATS), suitable for AC 50Hz, rated working power up to 3200A and below dual-power supply system. The two power supplies can be selectively switched as needed It has short circuit, overload, loss of voltage protection functions, and also has the function of outputting closing signals. It is especially suitable for the installation and use of lighting circuits in office buildings, shopping, malls, banks, stations, hospitals and high-rise buildings.
Operation Method:
When the ATS needs to be operated manually, the button switch should be placed in the manual position first. At this time, you can turn the handle to switch between NORMAL or READY power. 
When the ATS needs an automatic operation, the button switch should be in the automatic state first, and the NORMAL power supply has priority. 
 catalog

High Quality Type

Code: Q5-100, Q5-160, Q5-250, Q5-400, Q5-630, Q5-1000, Q5-1250, Q5-1600, Q5-2000, Q5-2500, Q5-3200
Electrical Appliances Class: PC
Rated Current(A): 100, 125, 160, 200, 250, 400, 630, 800, 1000, 1250, 1600, 2000, 3200
Control Voltage: 22OVAC
Rated Voltage Ue: 400V
Pole: 3P 4P
MOQ: 1PCS

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Fire Emergency Starter Switch
Millisecond switching, no fear of power failure
Fire Emergency Starter Switch(YJQ2)

YJQ2 series fire emergency stater switch, is suitable for fire fighting, elevators, monitoring. The backup power supply should only be switched to standby in the case of a common power failure when the backup power is supplied. It is currently widely used in AC 220V circuits. The common power supply is city power. The backup power supply can use solar power, street lamp power, and battery power. Or any AC 220V power supply, and vice versa.
Please note: 
the common/backup power supply should be AC 220V power supply, if it is DC or low-voltage power supply, the inverter needs to be changed to AC 220V.

High Quality Type

Code: YJQ2
Operation mode: operation outside the cabinet
Electrical Appliances Class: PC
Rated Current(A): 100-400
Rated Voltage Ue: 400V
Pole: 6P
MOQ: 1PCS

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CE Certificates
HYOCIE has a professional production line, strict quality inspection, and good after-sales service.
CE-MC4
CE-SPD
CE-ATS
CUSTOMER FEEDBACK
Our company sincerely hopes to establish long-term and stable cooperative relations with customers. Trust is the foundation of cooperation. Service is the foundation of trust.

CUSTOMERS' NICE FEEDBACK:
 'Their communication was very smooth, even small orders will be taken seriously, and I am very satisfied with their service. '
--- Ryan
 'I think in international trade, some people choose well-known brands to ensure quality and service. However, the famous brand means a very high budget, which will cause difficulties for our business. For a small and medium-sized development company like me, I am happy to cooperate with this company. Under the premise of ensuring quality, their services and reasonable prices have earned me profits.'
--- Krzysztof Mandziej
 I hope to find a reputable supplier that can cooperate for a long time, which will reduce a lot of trouble. I don’t want to work with suppliers with cheap price but of poor quality.When I was working with this company, I found that they were very sincere and helped me purchase some other products I needed to save my shipping costs. 
---  Adamyan



One-to-one Consultation

Leave a message to us with any questions that we can help with.During the holidays, our sales may also reply u, it is generally suitable for simple inquiries.

Attentive service

When choosing to use express delivery, if you need help, we will provide suitable solutions, such as specifying DHL, FedEx, comparing prices.

Preferential Policy

If your order meets the preferential policy of CO certificate, we can handle it for free when the order value reaches 1,000 USD. You only need to pay the certificate courier fee.

Warranty

Usually the warranty is 2 years.like MC4, the warranty can even reach more than 10 years

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Production Video
We offer factory price and good quality. If you still have concerns, watch our videos to truly show the production process of our factory,  please.
A small accessory requires the cooperation of multiple machines and labor. In photovoltaic systems, MC4 is a very important accessory that is easily overlooked. Products with poor quality and too low prices will cause the entire system to burn down.
Please choose our brand.
  • Compression moulding
  • Automatic assembly
  • Spot welding
  • Metal fittings pressing
  • Cutting
  • Packing
News
The metal parts(inner cores) of MC4 Connectors
In a photovoltaic power generation system, MC4 connectors are mainly used in components, combiner boxes, inverters and the connections between them, most of which are installed in the factory, and the crimping quality is relatively reliable. 
About 10% of the remaining connectors need to be manually installed at the project site, mainly referring to the need to install connectors at both ends of the photovoltaic cable connecting each device. According to the experience of many years of customer visits, due to the lack of training of on-site installation workers and the use of professional crimping tools, crimping irregularities are common, as shown below:

Types and characteristics of metal parts
The metal part is the main body of the connector and the most important flow path. At present, the vast majority of MC4 connectors on the market use a "U"-shaped metal core, which is stamped and formed from a copper sheet, also known as a stamped metal core. Thanks to the stamping process, the "U"-shaped metal core not only has high production efficiency, but also can be arranged in a chain, which is very suitable for automated wire harness production.
Some solar connectors use "O"-shaped metal cores, which are formed by drilling holes at both ends of thin copper rods, which are also called machined metal cores. The "O"-shaped metal core can only be crimped individually, which is not suitable for use in automated equipment.


Our factory uses O shaped for 1500V, U shaped for 1000V. 
The reliability of crimping largely depends on tools and operations, both of which determine whether the final crimping effect meets the requirements of the standard. Take the "U"-shaped metal core as an example. It is basically a copper tin-plated material(Our 10mm2 MC4 metal parts are copper silver-plated) and needs to be connected to the photovoltaic cable by crimping. The crimping process is as follows:

 
"U"-shaped metal core crimping is a process in which as the crimping height gradually decreases (while the crimping force gradually increases), the copper sheet wrapped with the copper wire of the cable is gradually compressed. In this process, the control of crimping height directly determines the quality of crimping. The control of the crimp width is not very important, because the crimp die determines the width value.
Crimping quality evaluation
The crimping height/width can be measured with a vernier caliper within the defined range

Pull-off force is the force required to pull or break the copper wire from the crimping place, such as a 4mm2 cable. IEC 60352-2 requires at least 310N

Resistance, taking 4mm2 cable as an example, IEC 60352-2 requires the resistance at the crimp to be less than 135 microohms

Cross-sectional analysis, losslessly cut off the crimping zone, analyze width, height, compression rate, symmetry, cracks and burrs, etc.

If it is to release a new device or a new crimping die, in addition to the above points, it is also necessary to monitor the resistance stability under temperature cycling conditions, refer to the standard IEC 60352-2.
MC4 Connectors are small parts, but they will affect the operational efficiency of photovoltaic projects. Compromise with quality usually means high subsequent losses and risks, which could have been avoided.
Pls choose us -HYOCIE, MC4 manufacturer in China.

Contact us
Your inquiry will be replied within 24 hours on our working days.
Feel free to contact us when you need any help, please.
Sales Manager: Sammy

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Address:
Shangchi Village, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province, 325600 China.