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Author: luke Publish Time: 09-04-2019 Origin: Site
When making a fire alarm installation, all elements, particularly cabling, have to fulfil stringent fire resistance requirements. British standards, including EN 50200 and IEC 60331, present the characteristics of fire-resistant cables based on how long they can preserve circuit integrity in a fire situation. PH30 and PH120 cables that are frequently used in fire alarm systems are two common kinds.
Fire-resistant cables are a special type created to be able to perform as long as it is predetermined in case of a fire. Its purpose is to help crucial systems, like fire alarms, emergency lights, and evacuation command systems, to stay functional even in the most intense heat environments.
These cables have their flame-testing ascending where they are subjected to direct fire at approximately 830°C whilst maintaining electrical functioning. Whether 30, 60, 90, or 120 minutes under severe conditions, cables can be classified into PH30, PH60, PH90, or PH120 cables with the latter being the strongest.
Applications include:
Hospitals
Airports
Shopping Centers
Hotels
Cinemas & Theatres
Railway Stations
Office Buildings
Schools
PH120 Cable is the designation given to the cables that keep the integrity of the circuit for two hours in the case of fire. This type of cable, which is improved in fire protection, is appropriate for maintaining enormous or strategic infrastructure, which requires longer evacuation or emergency response times.
✅ PH120 Cable Construction (EN 50200:2015 Class PH120 STR Flexible Cable)
Conductor: Plain annealed copper wire, Class 5 flexible
Insulation: Special mix silicone rubber
Screen 1st: Fiber glass tape, >110% coverage
Drain Wire: Tinned copper, Ø0.80mm
Screen 2nd: Aluminum polyester tape, >120% coverage
Sheath: Thermoplastic Low Smoke Zero Halogen (LSZH)
Sheath Colors: Red | White | Orange
2 cores: ● ●
3 cores: ● ● ●
4 cores: ● ● ● ●
Electrical Data
Insulation Resistance @ 20°C: >200 MΩ·km
Test Voltage Core-Core/Core-Screen: 2000V
Mutual Capacitance: <150 nF/km
Operating Voltage: 300/500V
Temperature Range
Operation: -30°C to +180°C
Installation: -5°C to +50°C
Reference Standards
EN 50200:2015 Class PH120
IEC 60331
EN/IEC 60754-1:2014 (Acidity)
EN/IEC 61034- 2:2005+A1:2013 (Smoke Density)
PH30 cables allow the integrity of the circuit to be maintained for 30 minutes in a fire. This type of cable is suitable for medium-sized buildings or other installations where there is a need for a short emergency response time.
✅ PH30 Cable Construction (EN 50200:2015 Class PH30 STR Flexible Cable)
Conductor: Plain annealed copper wire, Class 5 flexible
Insulation: Special mix silicone rubber
Screen 1st: PET foil, >120% coverage
Drain Wire: Tinned copper, Ø0.80mm
Screen 2nd: Aluminum polyester tape, >120% coverage
Sheath: Thermoplastic Low Smoke Zero Halogen (LSZH)
Sheath Colors: Red | White | Orange
2 cores: ● ●
3 cores: ● ● ●
4 cores: ● ● ● ●
Electrical Data
Insulation Resistance @ 20°C: >200 MΩ·km
Test Voltage Core-Core/Core-Screen: 2000V
Mutual Capacitance: <150 nF/km
Operating Voltage: 300/500V
Temperature Range
Operation: -30°C to +180°C
Installation: -5°C to +50°C
Reference Standards
EN 50200:2015 Class PH30
IEC 60331-21:1999
EN/IEC 60754-1:2014 (Acidity)
EN/IEC 61034- 2:2005+A1:2013 (Smoke Density)
Feature | PH30 | PH120 |
Fire Resistance Time | 30 minutes | 120 minutes |
Shielding Material | PET Foil + Aluminum Foil | Fiber Glass Tape + Aluminum Foil |
Applications | Small to mid-size installations | Large and critical infrastructure |
Fire Performance | Standard fire-resistance | Enhanced fire-resistance |
Compliance Standards | EN 50200 PH30, IEC 60331 | EN 50200 PH120, IEC 60331 |
Core Options: 2-core, 3-core, 4-core
Conductor Sizes: 1.0mm², 1.5mm², 2.5mm², 4.0mm²
Packaging: 100M Roll, 200M Roll, 500M Wooden Spool
The most popular choices are PH30 2 Core 1mm2 and PH120 2 Core 1mm2. If you are interested in receiving our price list and datasheets, please get in touch with us by email or chat on WhatsApp.
Even we can provide short free samples before you place an order from us. In order to guarantee the stable quality of our fire-resistant cables, we invested more than 15 thousand dollars in building up the fire testing chamber in our factory in 2019.
We can provide the related testament on PH30 and PH120 under our customers' standard of BS EN 50200 testing method. If you are interested, you can visit our youtube channel to watch the fire testing video.
Luke Han is a Product Manager and Director at Zion Communication,
Specializing in fire, security, and alarm solutions. With extensive industry experience,
Dedicated to delivering high-performance, reliable products that are tailored to customer needs.
luke@zion-communication.com
0086 19883212162
