BBTRZ 4+1-Core Copper Mineral-Insulated LSOH-Sheathed Fire-Resistant Power Cable, 0.6/1kV Fire Protection

The 4+1 arrangement and LSOH sheath distinguish this BBTRZ cable for a fire-protection power specification. Copper conductors and mineral insulation form the stated core construction, with fire resistance and a rated voltage of 0.6/1kV.

Keep the 4+1 arrangement explicit

Show all conductor functions on the circuit drawing, including the separate requirement represented by the additional conductor. The selectable configuration combines the 50 mm² size reference with 4+1 cores; confirm the section required for every conductor before defining the finished cable.

Retain the LSOH sheath requirement

Keep the LSOH sheath with the mineral-insulated copper build in the material specification. Identify any project smoke or halogen requirement with the relevant acceptance criterion for the selected sheath.

• A 4+1 layout identifies the featured conductor arrangement.
• BBTRZ names the required cable family.
• Copper retains the stated conductor material.
• Mineral insulation defines the insulation construction.
• The LSOH sheath remains part of this cable's specific build.

Define the delivered cable requirement

State the physical cable length and required terminations separately from the conductor-size reference. Include both connection positions and the cable schedule needed for the fire-protection circuit.

Identify applicable project acceptance criteria

Match any exact fire, smoke or halogen criterion to the selected BBTRZ construction and installation. A request that joins the 4+1 conductor schedule, LSOH sheath, required length and end details gives the project a clearly defined cable to review.