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Predision HESC-T-042 RS-232/RS-485 to 16-port RS-485 Photoelectric Isolated Hub
Manufacturer Part Number: HESC-T-042
Brand: Predision
$ 926.00
- Operating Temperature: -40°C to 85°C
- ±15 kV ESD Protection (RS-232), 1,500 W Lighting and Surge Protection per wire (RS-485)
- Isolation Voltage: 2,500 Vrms, 500 VDC (Continuous)
- Input Voltage: 100 - 240 VAC, 50/60 Hz
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More stock available: May 29, 2026 (UTC-4)
The HESC-T-042 is a high-performance RS-485 bus segmentation hub designed specifically for large-scale systems operating within the "noise" of complex electromagnetic environments. At its core is a quad-core, non-stop processing architecture, engineered to provide unfailing logic execution for mission-critical industrial automation. Whether managing long cable runs or high-density node clusters, this hub maintains a steady transmission rate of up to 115.2 kbps.
To ensure the "Hard Truth" of your data remains uncorrupted, the HESC-T-042 utilizes advanced photoelectric isolation technology. By physically decoupling the RS-485 interface from the rest of the system, it provides a robust 2500Vrms isolation barrier that prevents lightning surges and high-voltage transients from damaging your expensive PLC or PC hardware. This is reinforced by a 1500W surge protection circuit, specifically tuned to suppress the unpredictable spikes of ESD and lightning common in outdoor engineering applications.
Beyond simple protection, the HESC-T-042 acts as an intelligent traffic controller. It features high-precision Automatic Data Direction Control (ADDC), which senses the direction of data flow in real-time and automatically toggles the enable circuitry. This eliminates the classic RS-485 transceiver latency issues, allowing for seamless, high-speed communication without manual timing adjustments.
By supporting a Star Topology, the HESC-T-042 allows engineers to easily segment their network into manageable branches. Each port is equipped with independent short-circuit and open-circuit protection, ensuring that a failure in one segment stays isolated and doesn't collapse the entire bus. Powered by a reliable external switching power supply, it is the definitive solution for building stable, segmented, and interference-free communication networks in the most demanding environments.
| Standard | EIA/TIA RS-232C, RS-485 |
| Electrical Interface | 5-pin Terminal Pin 1-3 (RS-232C), 5-pin Terminal Pin 4-5 (RS-485) |
| Operating Mode | Asynchronous Half-duplex |
| Input Voltage | 100 - 240 VAC, 50/60 Hz |
| Signal Indicators | 19 LEDs for Power (PWR), Transmit (TXD), Receive (RXD) and Error ( E1- E16) |
| Isolation Voltage | 2,500 Vrms, 500 VDC (Continuous), Built-in DC/DC Module |
| Transmission Medium | Twisted-pair (UTP) or Shielded Cable (STP) |
| Baud Rate | 300 bps - 115.2 kbps |
| Interface Protection | ±15 kV ESD Protection (RS-232C), 1,500 W Lighting and Surge Protection per wire (RS-485) |
| Transmission Distance | 5,000m (at 9,600 bps) |
| Dimension | 440 × 201 × 44 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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