RS-485 2×2×0.22 LSZH B2ca
RS-485 bus cable, 2 pairs 0.22 mm², 110 Ω, foil and tinned-copper braid, blue LSZH sheath, B2ca-s1a,d0,a1
RS-485 2×2×0.22 LSZH B2ca is the two-pair bus cable for fixed wiring in buildings: CPR class B2ca-s1a,d0,a1, a blue halogen-free sheath and 600 V. Supplied to order; the lead time is stated in the quote.
RS-485 2×2×0.22 LSZH B2ca is an RS-485 (EIA/TIA-485) data bus cable with a characteristic impedance of 110 Ω, for serial fieldbus communication between PLCs, drives, operator panels, meters and SCADA/RTU equipment. Two twisted pairs of stranded tinned-copper conductors with high-density polyethylene (HDPE) insulation are enclosed by an overall screen of aluminium/polyester (Al/PET) foil with a tinned-copper drain wire and a tinned-copper braid, which keeps the bus reliable in electrically noisy installations and over long distances. The blue sheath is a UV-resistant, low-smoke zero-halogen (LSZH) compound, for installations that call for a high reaction-to-fire class.
Also known as: RS485 cable · Modbus cable · fieldbus cable
Applications
- Four-wire RS-485 (full duplex) in buildings.
- Two-wire bus with a separate pair for the signal reference, in an escape route or plant room.
What to look out for
- B2ca-s1a,d0,a1 also complies in an extra protected escape route, where the Bbl requires B2ca with smoke class s1.
- The impedance is 110 Ω ±15 Ω. Common protocols ask for 100 to 130 Ω; on a long, fast bus, terminate with 110 Ω.
- Conductor
- Stranded tinned copper, 7 × 0.20 mm, approx. 0.22 mm².
- Insulation
- High-density polyethylene (HDPE), nominal diameter 1.73 mm.
- Pairs
- Two twisted pairs; colours blue with white stripe and white with blue stripe, orange with white stripe and white with orange stripe.
- Screen
- Overall aluminium/polyester (Al/PET) foil with a stranded tinned-copper drain wire, 7 × 0.20 mm.
- Braid
- Tinned copper, 0.11 mm wires, 16 carriers of 8 wires.
- Sheath
- Low-smoke zero-halogen (LSZH) compound, UV-resistant, blue.
- Cross-reference
- Comparable in construction to Belden 9842 (RS-485, 2 pairs). Differs in characteristic impedance (110 Ω instead of 120 Ω), rated voltage (600 V instead of 300 V), outer diameter (8.00 mm instead of 8.64 mm) and sheath (LSZH, B2ca).
- Rated voltage
- 600 V.
- Characteristic impedance
- 110 Ω ±15 Ω.
- Capacitance
- 45 ±15 pF/m core to core; 75 ±15 pF/m core to screen.
- Conductor resistance
- 83 Ω/km at 20 °C.
- Temperature range
- −30 °C to +70 °C.
- Compliance
- RoHS (EU 2015/863) and REACH.
- Flame propagation
- EN 60332-1-2.
- Reaction-to-fire test
- EN 50399.
- Smoke density
- EN 61034-2.
- Halogen acid gas
- IEC 60754-1.
- Corrosive gases
- IEC 60754-2.
- Reaction to fire (CPR)
- B2ca-s1a,d0,a1 (EN 50575:2014+A1:2016, AVCP system 1+).
Key figures
| Pairs × mm² | Outer Ø (mm) | Impedance (Ω) | R 20 °C (Ω/km) |
|---|---|---|---|
| 2×2×0.22 | 8.00 | 110 ±15 | 83 |
Manufacturer's nominal values for this construction, with the tolerances from the sheet. Weight and minimum bending radius on request. Belden is a trademark of Belden Inc.; the name is used for comparison only.
Two pairs or one in B2ca?
RS-485 2×2×0.22 LSZH B2ca
- two pairs, also for four-wire
- Ø 8.00 mm
RS-485 1×2×0.22 LSZH B2ca
- one pair
- Ø 6.10 mm
For a two-wire bus (half duplex) you use one pair. The second pair is for four-wire RS-485 (full duplex), with a separate pair for transmit and receive, or for the signal reference (common) that many devices ask for. Screen, impedance and sheath are otherwise the same.
View RS-485 1×2×0.22 LSZH B2ca →B2ca or the grey LSZH with two pairs?
RS-485 2×2×0.22 LSZH B2ca
- CPR B2ca-s1a,d0,a1
- 600 V
RS-485 2×2×0.20 LSZH
- CPR Eca
- 300 V
Both have two pairs and a halogen-free sheath. This version is B2ca-s1a,d0,a1 and 600 V, and may also be installed in a building where the cable is exposed to indoor air. The grey LSZH version is Eca and 300 V, with 120 Ω compared with 110 Ω ±15 Ω for this cable.
View RS-485 2×2×0.20 LSZH →
RS-485 1×2×0.20 LSZH
RS-485 bus cable, 1 pair 0.20 mm², 120 Ω, foil and tinned-copper braid, LSZH sheath
Lead time: On request; the lead time is stated in the quote.
RS-485 2×2×0.20 LSZH
RS-485 bus cable, 2 pairs 0.20 mm², 120 Ω, foil and tinned-copper braid, LSZH sheath
Lead time: On request; the lead time is stated in the quote.
RS-485 1×2×0.22 LSZH B2ca
RS-485 bus cable, 1 pair 0.22 mm², 110 Ω, foil and tinned-copper braid, blue LSZH sheath, B2ca-s1a,d0,a1
Lead time: On request; the lead time is stated in the quote.
Not seeing what you need? Just ask. Our range goes well beyond this list. Ask us →