Introduction to flexible cables (dragging cables)

MICC cable(Mineral Insulated Copper Cable)

MICC Cable, short for Mineral Insulated Copper Cable, is commonly referred to as mineral insulated cable or fire-resistant cable in the industry. It is also often known as MI cable.

It is a special type of cable composed of copper conductors, magnesium oxide powder insulation, and a copper sheath. As all its materials are inorganic, it offers exceptional fire resistance and is truly a "non-combustible" cable.

Structure and characteristics of MICC cable(Mineral Insulated Copper Cable)

The structure of MIC cable from inside to outside:

Layer	Material	Function
Conductor	Stranded annealed copper wire (Class 1 or Class 2)	Good flexibility, excellent electrical conductivity
Insulation	Synthetic mica tape / ceramic silicone rubber tape	High temperature resistance (1375ā„ non-combustible), maintains insulation under flame
Filling	Glass fiber rope (optional)	Compact filling, fire and thermal insulation
Metal Sheath	Copper tape longitudinally welded and corrugated	Waterproof, mechanical protection, doubles as grounding conductor
Outer Sheath	Low smoke halogen free polyolefin (YTTWY model)	Corrosion protection, low smoke, non-toxic

Core advantages of MICC cable(Mineral Insulated Copper Cable)

Technical Specifications

Parameter	Specification
Rated Voltage	0.6/1kV
Conductor Material	Copper (Class 1 or Class 2 annealed copper)
Number of Cores	1 core, 2 cores, 3 cores, 4 cores, 5 cores, 3+1 core, 3+2 cores, 4+1 core
Cross-Sectional Range	Single core: 10–630 mm²
Cross-Sectional Range	Multi-core: 4–150 mm²
Conductor Operating Temperature	Normal: 90°C
Conductor Operating Temperature	Overload: 250°C
Installation Temperature	Not below 0°C (preheating required if below 0°C)
Minimum Bending Radius	OD ≤ 12mm: 6D
	OD 12–20mm: 10D
	OD 20–40mm: 15D
	OD > 40mm: 20D

Fire Resistance Performance

MICC cable meets stringent international fire resistance test standards:

Test Item	Standard	Requirement
Fire Resistance (C Rating)	BS 6387	Power supply maintained for 180 minutes under 950℃ flame
Fire + Water Spray (W Rating)	BS 6387	Power supply maintained for 15 minutes under 650℃ flame with water spray
Fire + Mechanical Impact (Z Rating)	BS 6387	Power supply maintained for 15 minutes under 950℃ flame with mechanical impact

Key Advantages

Advantage	Description
Superior Fire Resistance	Meets BS 6387 C, W, and Z ratings; maintains power supply for over 3 hours under 950â„ƒ flame
Long Continuous Length	Single length can exceed 1000 meters with no intermediate joints, reducing failure points
Truly Flexible	Corrugated copper sheath design allows coiling for transport; bending radius only 6â€"20 times outer diameter
Environmentally Friendly	Inorganic insulation materials produce no halogens, smoke, or toxins when burned; no secondary pollution
High Overload Capacity	Normal operating temperature 90آ°C; up to 250آ°C under overload conditions
Electromagnetic Shielding	Copper sheath provides complete shielding; no interference with signal cables
Corrosion Resistant	Copper sheath offers excellent corrosion resistance; no additional conduit required
Long Service Life	Inorganic materials do not age; service life can exceed 100 years under normal operating conditions

Application Scenarios

MICC cable is suitable for locations with extremely high fire safety requirements:

High-Rise Buildings: Fire elevators, fire pumps, emergency lighting, fire alarm systems

Public Transportation: Subways, stations, airports, tunnels

Critical Facilities: Hospitals, large shopping malls, exhibition centers, banks, telecommunications buildings

Industrial Sites: Steel mills, smelters, petrochemical plants, nuclear power stations

National Projects: Major infrastructure projects such as China's FAST (Five-hundred-meter Aperture Spherical Telescope)

Comparison with Other Fire-Resistant Cables

Model	Insulation Material	Metal Sheath	Characteristics	Application Scenarios
YTTW	Mica Tape	Corrugated Copper Tube	Good flexibility, long continuous length, moderate cost	Fire protection main lines in high-rise buildings
BTTW	Magnesium Oxide	Seamless Copper Tube	Rigid, optimal fire resistance, recoverable after breakdown	Nuclear power stations, super high-rise core fire protection
BTLY	Mica Tape	Aluminum Tube + Isolation Layer	Lower cost, good water and explosion resistance	General fire protection applications
BBTRZ	Ceramic Silicone Rubber	Non-metallic Sheath	Non-metallic sheath, maximum flexibility	Space-constrained installations

Common specifications of MICC cables

1. Number of Cores and Cross-Section Range

Core Type	Cross-Section Range (mm虏)	Description
1 Core	10 ~ 630	Single-phase high current main line
2 Cores	4 ~ 150	Single-phase power supply
3 Cores	4 ~ 150	Three-phase three-wire
4 Cores	4 ~ 150	Three-phase four-wire
5 Cores	4 ~ 150	Three-phase five-wire (with ground)
3+1 Core	4 ~ 150	Three-phase + neutral
3+2 Cores	4 ~ 150	Three-phase + neutral + ground
4+1 Core	4 ~ 150	Three-phase four-wire + ground

2. 1-Core YTTW Cable Specifications

Nominal Cross-Section (mm²)	Insulation Thickness (mm)	Copper Sheath Thickness (mm)	Approx. Outer Diameter (mm)	Current Carrying Capacity in Air (A)	Voltage Drop (V/A.km)
1×10	1	0.5	7.02	97	2.33
1×16	1	0.6	8.24	125	1.47
1×25	1	0.6	9.56	165	0.92
1×35	1	0.6	10.7	200	0.67
1×50	1.2	0.7	12.6	245	0.49
1×70	1.2	0.7	14.4	305	0.34
1×95	1.2	0.8	16.5	375	0.25
1×120	1.2	0.8	18.14	435	0.2
1×150	1.4	0.8	20.15	500	0.16
1×185	1.4	0.9	22.1	580	0.13
1×240	1.4	0.9	24.85	685	0.1
1×300	1.6	1	27.7	795	0.08
1×400	1.6	1	30.4	930	0.06

3. 2-Core YTTW Cable Specifications

Nominal Cross-Section (mm²)	Insulation Thickness (mm)	Copper Sheath Thickness (mm)	Approx. Outer Diameter (mm)	Current Carrying Capacity in Air (A)	Voltage Drop (V/A.km)
2×2.5	0.8	0.5	6.96	33	18.96
2×4.0	0.8	0.6	8.1	44	11.8
2×6.0	0.8	0.6	9.12	57	7.8
2×10	1	0.7	12.44	78	4.66
2×16	1	0.7	14.48	104	2.86
2×25	1	0.8	17.32	135	2.52
2×35	1.1	0.8	19.9	168	2.24
2×50	1.2	0.9	23	204	1.64
2×70	1.2	1	26.8	263	1.42
2×95	1.2	1	30.6	320	1.08
2×120	1.2	1	33.88	373	0.98
2×150	1.4	1	37.7	430	0.88
2×185	1.4	1	41.2	493	0.72

4. 3-Core YTTW Cable Specifications

Nominal Cross-Section (mm²)	Insulation Thickness (mm)	Copper Sheath Thickness (mm)	Approx. Outer Diameter (mm)	Current Carrying Capacity in Air (A)	Voltage Drop (V/A.km)
3×2.5	0.8	0.6	7.56	29	16.4
3×4.0	0.8	0.6	8.57	38	10.2
3×6.0	0.8	0.6	9.67	46	6.74
3×10	1	0.7	13.22	65	4.03
3×16	1	0.7	15.42	85	2.54
3×25	1	0.8	18.46	118	1.59
3×35	1.1	0.8	21.43	150	1.16
3×50	1.2	0.9	24.55	192	0.85
3×70	1.2	1	28.63	228	0.59
3×95	1.2	1	32.72	273	0.43
3×120	1.2	1	36.26	314	0.35
3×150	1.4	1	40.56	360	0.28
3×185	1.4	1	44.33	410	0.22

5. 4-Core YTTW Cable Specifications

Nominal Cross-Section (mm²)	Insulation Thickness (mm)	Copper Sheath Thickness (mm)	Approx. Outer Diameter (mm)	Current Carrying Capacity in Air (A)	Voltage Drop (V/A.km)
4×6.0	0.8	0.6	10.59	46	6.74
4×10	1	0.7	14.52	65	4.03
4×16	1	0.8	17.18	85	2.54
4×25	1	0.9	20.57	118	1.59
4×35	1.1	1	23.86	150	1.16
4×50	1.2	1	27.34	192	0.85
4×70	1.2	1	31.69	228	0.59
4×95	1.2	1	36.27	273	0.43
4×120	1.2	1.1	40.43	314	0.35
4×150	1.4	1.1	45	360	0.28
4×185	1.4	1.2	49.42	410	0.22

certificate

Our Certificate

TUV

SAA

U.L

packing and shipping

packaging and shipping

01.

export packaging

Moisture prevention: A desiccant (silica gel packet) must be placed inside the coiled cable, and the humidity indicator card should be checked before sealing the film.
Fumigation: If wooden pallets or trays are used for export, they must bear the IPPC (International Plant Protection Convention) fumigation mark, otherwise they may be destroyed or subject to mandatory treatment at the destination port.
Label: The shipping mark must be firmly affixed, including the contract number, gross weight, reel number, as well as marks such as "Do Not Stack" and "Keep Dry".

02.

Multiple modes of transportation

Providing one-stop logistics services such as "door-to-port" or "door-to-door" can simplify the communication process and offer more cost-effective integrated freight rates.

JSH Cable Advantages

Advanced equipment

Advanced equipment and multiple production lines are the guarantee of our cable quality and production capacity.

Application: Our cables have been extensively used in municipal, electric power, water conservancy, steel, coal, petroleum, chemical, construction, subway, high-speed rail, airport, and other fields.

Advanced Equipment and Reliable Technology: We employ cutting-edge equipment and reliable technology to ensure the manufacturing of superior products.

Ustomer Satisfaction: Our excellent management practices, along with guaranteed quality and reliable technical support, provide customers with reliable products and satisfactory services.

Extensive Market Reach: Our products have been distributed across more than 30 provinces and regions in China and exported to over 20 countries, including Russia, Spain, and the United States.

FAQ

Q1: Are you a factory or trading company?

A1: We are a manufacturer.

Q2: Can I send you here to purchase samples of MICC cable(Mineral Insulated Copper Cable)?
A2: Yes! You are welcome to place sample order to test our superior quality and services.

Q3: What is your Warranty?
A3: All the products will have 12 months Warranty.

Q4:What payment method do you accept?
A4:T/T(Bank transfer), L/C, Western Union, Money Gram, Paypal, etc.

Q5: Can you put my brand name (logo) on these products?
A5: Yes! The professional OEM services will be welcomed to us. Our factory accepts to make the logo free for
bulk orders.

Q6: May I know the status of my order?
A6: Yes .The order information and photos at different production stage of your order will be sent to you and the information will be updated in time.

Q7: What's the leading time? (How long do you need to prepare my goods? )
A7: Delivery (no more than 1000pcs) will be arranged within 3-7 days after payment, and arrive you within about 3-7 working days via international express.