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Predision HESC-T-038 RS-232/RS-485 to 8-port RS-485 Hub
Manufacturer Part Number: HESC-T-038
Brand: Predision
$ 596.00
- Operating Temperature: -40°C to 85°C
- Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous)
- Baud Rate: 300 bps - 115.2 kbps
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More stock available: May 29, 2026 (UTC-4)
The HESC-T-038 is a high-performance RS-485 bus segmentation hub featuring a dual-core, non-stop operational design. It is specifically engineered to meet the demanding requirements of large-scale RS-485 systems in environments with complex electromagnetic interference.
Supporting transmission rates up to 115.2 kbps, the device ensures secure and reliable data communication through optical isolation technology on the RS-485 interfaces. This prevents lightning strikes and surges from damaging the converter and connected equipment. With built-in photoelectric isolators and a 1,500W surge protection circuit, it provides an isolation voltage of 2,500 Vrms, effectively suppressing ESD, lightning, and common-ground interference. Powered by a stable external switching power supply, it is exceptionally well-suited for rugged outdoor engineering applications.
In RS-485 mode, the integrated discrimination circuitry automatically senses data flow direction and switches the enable-control circuit, seamlessly resolving transceiver latency issues. The RS-485 interfaces support stable transmission distances exceeding 1,200 meters.
The HESC-T-038 facilitates star-topology RS-485 bus connections, with each port equipped with independent short-circuit and open-circuit protection.
| Standard | RS-232C, RS-485 EIA/TIA |
| Electrical Interface | RS-485/422 Terminal Block |
| Interface Protection | 15 kV ESD Protection (RS-232) 1,500 W Lightning and Surge Protection per wire (RS-485) 2,000V Lightning and Surge Protection (Power Supply) |
| Isolation Voltage | 2,500 Vrms, 500 VDC (Continuous), Dedicated DC/DC Module |
| Operating Mode | Asynchronous, Half-duplex |
| Input Voltage | 12 - 48 VDC |
| Signal Indicators | 11 LEDs for Power (PWR), Transmit (TXD), Receive (RXD) and Error (E1-E8) |
| Transmission Media | Twisted-pair (UTP) or Shielded Cable (STP) |
| Baud Rate | 300 bps -115.2 kbps |
| Transmission Distance | 1,200m (at 9,600 bps) |
| Dimension | 145 x 90 x 40 mm |
| Operating Temperature | -40°C to 85°C |
| Relative Humidity | 5 - 95% |
Industrial RS-232 to 2-port RS-485 Converter with Optical Isolation, Baud Rate: 300 bps - 115.2 kbps, Power: 9-30 VDC/ 350 mA, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), DC/DC module, ±15 kV ESD Protection, 600 W Lightning Surge Protection per wire, Operating Temperature: -40℃ to 85℃.
Industrial RS-232/RS-485 to 2-port RS-485 Hub, Operating Power: 9-30 VDC / 150 mA, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection, 600 W Lightning Surge Protection per wire, Operating Temperature -40℃ to 85℃.
RS-232/RS-485 to 4-port RS-485 Hub (Din-rail), Operating Power: 9 - 30 VDC/150 mA, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection, 600W Lightning and Surge Protection per wire, Operating Temperature: -40℃ to 85℃.
Industrial RS-485/422 to 4-port RS-485/422 Hub, Baud Rate: 300 bps - 115.2 kbps, Operating Voltage: 9 - 48 VDC, Transmission Distance: 1,200m (at 9,600 bps), 8/20μs 3,000A Lightning Surge Protection per wire, Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), Operating Temperature: -40℃ to 85℃.
RS-232/485 to 4-port RS-485/422 Photoelectric Isolated Hub, Baud Rate: 300 bps - 115.2 kbps, Operating Voltage: 9 - 48 VDC, Transmission Distance: 1,200m (at 9,600 bps), 8/20μs 3,000A Lightning Surge Protection per wire, Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, Din-rail, Input Voltage: 12 - 48 VDC, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 1,200m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), 15 kV ESD Protection (RS-232), 1,500 W Lightning and Surge Protection per wire (RS-485), 2,000 V Lightning and Surge Protection (Power Supply), Operating Temperature: -40℃ to 85℃.
Industrial RS-232/RS-485 to 8-port RS-485 Hub, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge per wire (RS-485), Operating Temperature: -40℃ to 85℃.
Industrial Rack-mount RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, 1U Enclosure, 100 - 240 VAC 50/60Hz, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge per wire (RS-485), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 8-port RS-485 Photoelectric Isolated Hub, Baud Rate: 300 bps - 115.2 kbps, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge Protection per wire (RS-485), Operating Temperature: -40℃ to 85℃.
RS-232/RS-485 to 16-port RS-485 Photoelectric Isolated Hub, 1U Enclosure, Baud Rate: 300 bps - 115.2 kbps, Input Voltage: 100 - 240 VAC, 50/60 Hz, Transmission Distance: 5,000m (at 9,600 bps), Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous), ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge Protection per wire (RS-485), Operating Temperature: -40℃ to 85℃.
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