Mineral Insulated Fire-Rated Cable

Mineral Insulated Fire-Rated Cables are specialized cables designed to maintain circuit integrity during extreme conditions like fire, heat, and mechanical impact.
They are built with a copper sheath and magnesium oxide (MgO) insulation, making them naturally fireproof.

500 Meters(MOQ)
Please inquire for detailed specs and pricing.

SKU:
Availability:

Quantity:



Inquire Add to Basket

Product Description

Product Advantage

Improved Durability with top quality manufactured insulation ensuring full compliance with industry standards, designed to withstand extreme temperatures, moisture and physical harms
RRH Cable we have the capability to manufacture grade A 99.9% pure copper precisely stranded in the insulators for the best conductivity and efficiency
Thanks to our expert craftsmanship, we provide high-quality cables that minimize the need for frequent maintenance or replacements, significantly reducing long-term operational costs.

Mineral Insulated Fire-rated Cable

Technical Parameters

Size (mm²)	AWG	Voltage Rating	Ampacity (A)	Insulation	Armor	Shielding	Conductor Material	Core Type	# Conductors	Temp Rating (°C)	# Strands
1.0 mm²	17 AWG	300/500V	16–20 A	Magnesium Oxide	Copper Sheath	Copper Sheath (acts as shield)	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid (no strands)
1.5 mm²	15 AWG	300/500V	20–25 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
2.5 mm²	13 AWG	300/500V	25–32 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
4.0 mm²	11 AWG	600/1000V	32–41 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
6.0 mm²	9 AWG	600/1000V	41–53 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
10 mm²	7 AWG	600/1000V	57–70 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
16 mm²	5 AWG	600/1000V	76–90 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid
25 mm²	3 AWG	600/1000V	99–115 A	Magnesium Oxide	Copper Sheath	Copper Sheath	Copper	Single Core / Multi-core	1–4	250°C normal / up to 950°C fire	Solid

Key Points

Fireproof at 950–1050°C for 3 hours.
Zero smoke, zero toxic gases — important for human safety.
High mechanical strength — resists crushing, cutting, and impact.
Moisture resistant, chemical resistant, and corrosion resistant.
Long service life — typically 30–50+ years even in tough environments.
Armor — The copper sheath itself serves as mechanical protection (acts as armor).
Shielding — The copper sheath naturally provides EMI shielding.
Conductor Type — Always solid, not stranded, for best fire survival performance.
Core Options — Available in single-core and multi-core (up to 4C usually).
Fire Rating — Survives temperatures up to 950°C (BS 6387 CWZ fire test).
Installation — Must be carefully bent; MI cables are rigid compared to regular cables.

Product Uses

Emergency Power Circuits maintain power to critical systems like fire pumps, alarms, and emergency lighting during a fire.
Fire Alarm and Detection Systems ensure alarms and detection systems continue to operate even under extreme heat.
Smoke Extraction and Ventilation Fans keep ventilation systems running to remove smoke and protect escape routes.
Hospital Life-Safety Systems power critical equipment (ICU systems, emergency lifts) in case of fire.
Subway, Tunnel, and Airport Infrastructure maintain communication, lighting, and safety controls under fire.
Oil & Gas and Chemical Plants safeguard hazardous environments where fire or explosion resistance is critical.
High-Rise Buildings and Commercial Complexes support evacuation systems, sprinklers, fire lifts, and PA (Public Address) systems.

Product Operate Guide

Apply cable base on its insulation property
Always de-energize the system before working on cables
Proper PPE duing operation

Key Features

Feature	Why It Matters
Fire Resistance up to 1050°C	Ensures circuit integrity during fires for 3+ hours, crucial for evacuation and emergency systems.
Inorganic Insulation (Magnesium Oxide)	Will not burn, melt, or produce toxic gases — enhances life safety and environmental safety.
Copper or Alloy Sheath	Provides mechanical protection, corrosion resistance, and acts as an earth conductor.
Zero Smoke and Zero Halogen	Prevents vision loss and toxic exposure during a fire, critical for safe evacuation.
Waterproof and Chemical Resistant	Allows use in wet, aggressive environments like tunnels, subways, and chemical plants.
High Mechanical Strength	Resists impact, vibration, and crushing, maintaining function even in disaster conditions.
Small Diameter and Flexible Design	Easier to install through tight spaces, conduits, and difficult architectural areas.
Long Lifespan (30–50+ years)	Reduces long-term replacement and maintenance costs, maximizing reliability.
Shielded Design	Reduces electromagnetic interference (EMI), ideal for sensitive control and communication circuits.