PROCAB CLS440C-B2CA/3 4 x 4 mm² LSZH Speaker Cable, 300m Reel, Black

In a large conference hall, the audio engineer pulls a 300-meter reel of PROCAB CLS440C-B2CA/3 speaker cable to wire the main PA system. This 4-core cable, each conductor 4.0 mm² of oxygen-free copper, delivers clean, powerful sound to every corner of the venue. The black LSZH jacket ensures safety in public spaces, meeting the stringent B2ca-s1a,d1,a1 fire rating.

Key specifications

• Conductor: 4 x 4.0 mm² (11 AWG) oxygen-free copper, stranded 56 x 0.30 mm
• Outer jacket: LSZH (Low Smoke Zero Halogen), black, diameter 12.5 mm
• Fire rating: CPR Euroclass B2ca-s1a,d1,a1
• Length: 300 m on wooden reel
• Conductor resistance: < 4.6 Ω/km
• Insulation resistance: > 100 MΩ/km
• Voltage rating: 300/500 V
• Operating temperature: -20°C to +80°C
• Insulation material: Polyethylene (PE)
• Shielding: None

Why choose it

This cable is engineered for professional fixed installations where safety and performance are paramount. The LSZH jacket emits low smoke and zero halogens in case of fire, protecting people and equipment. Oxygen-free copper conductors ensure minimal signal loss over long distances, while the robust construction withstands the rigors of installation in public buildings, commercial spaces, and auditoriums.

Ideal use cases

• Permanent speaker wiring in conference centers, houses of worship, and theaters
• Commercial audio systems in retail, hospitality, and corporate environments
• High-power PA systems requiring reliable, low-resistance connections
• Installations where fire safety regulations demand LSZH and high CPR ratings

Good to know

Supplied on a 300-meter wooden reel, the cable is easy to handle and cut to length. It is not shielded, which is typical for speaker cables. The 4-core design allows for bi-wiring or parallel runs to reduce resistance. Always follow local electrical codes for installation.