Control cable BiT 500 (St) CH 21x0.75 SB9754

Shielded control cable – reliability and safety in every circuit

BiT 500 (St) CH 21x0.75 control cable is an advanced solution designed for internal and external installations where high reliability and protection against interference are required. Its construction with multiple cores, shielding, and flame-retardant properties makes it an ideal choice for both professional installers and end-users looking for a safe and durable solution.

Construction and properties

The BiT 500 (St) CH cable stands out with its careful construction, which ensures optimal operating parameters. 21 cores with a cross-section of 0.75 mm² made of copper provide adequate flexibility and ease of installation. A common screen made of metallized foil and copper braid effectively suppresses electromagnetic interference, which is crucial in control and automation systems. Additionally, the cable has double halogen-free insulation, which increases safety and minimizes the emission of toxic substances in the event of a fire. Fire resistance confirmed by IEC 60332-1-2 and IEC 60332-3-24 (cat. C) standards guarantees a high level of fire protection.

• Shielding: Foil + braid – minimizes the impact of electromagnetic interference on transmitted signals.
• Halogen-free: Compliant with IEC 60754-1 and IEC 60754-2 standards – increases fire safety and limits the emission of toxic gases during combustion.
• Fire resistance: Meets the requirements of IEC 60332-1-2 and IEC 60332-3-24 (cat. C) standards – provides a high level of fire protection.
• Cores: Stranded, flexible class 5 – facilitates installation and ensures durable connections.
• Core identification: Colors and numbers – makes it easier to connect the wires correctly.
• Reaction to fire class: Dca, acidity class a1 and smoke emission class s1 - meets stringent fire safety standards according to EN 13501-6.

Applications and technical parameters

The BiT 500 (St) CH cable is widely used in electrical installations in residential, commercial and industrial buildings. It will be perfect in control, automation, alarm systems and in powering electronic devices sensitive to interference. Thanks to its construction, the cable is resistant to external factors and can be used in both dry and humid rooms (although it is not oil-resistant).

The number of cores in the cable is 21, and the nominal cross-section of a single core is 0.75 mm². The rated voltage of the cable is 500 V. The outer diameter of the cable is approximately 13.5 mm. The minimum bending radius for fixed installations is 67.5 mm, and for mobile installations without guidance - 135 mm. The resistance of the core at 20°C is 26 Ω/km.

The permissible operating temperature of the cable is from -40°C to +80°C, which guarantees its reliable operation even in difficult environmental conditions. Low smoke emission according to IEC 61034-2 further increases safety in the event of a fire.