• One 4 to 20 mA Input to Three 4 to 20 mA Outputs
• Zero and Span Adjustments for Each Output
• Full 3000 V Isolation for Input/Output/Power
• Built-In Loop Power Supplies for Sink/Source I/O
• Split, Convert, Boost, and Rescale Process Signals
• Split Process Signals for Control and Validation
• Interface a Process Signal with Multiple Panel Meters, PLCs, Recorders, Data Acquisition, DCS, and SCADA Systems
• 8 kV ESD Protection
• 4 kV EFT Protection for Power Line
• Flexible DIN-Rail Mounting


The SG-3383 DC current signal splitters accept one 4 to 20 mA current input and provide three optically isolated 4 to 20 mA current outputs that are linearly related to the 4 to 20 mA current input. This provides an economical solution when one signal must be sent to three different devices. Typical applications include isolation, output splitting, output device separation and redundancy (i.e. to prevent failure of the entire loop if one device fails), or a combination of these. The input signal is filtered, amplified, split, and then passed through an opto-coupler to the output stages. Full 3-way isolation (input, output, power) , 4 kV EFT Protection for Power Line and 8 kV ESD Protection make this module useful for ground loop elimination, common mode signal rejection,and noise pickup reduction. The SG-3383 includes an LED display that can be used to indicate whether the module is functioning correctly, and also includes VRs (Zero, Span) that can be used to calibrate the output range accuracy. The input bandwidth of the SG-3383 is typically 2.5 kHz.


• Building Automation
• Factory Automation
• Machine Automation
• Remote Maintenance
• Remote Diagnosis
• Testing Equipment


 Three-way Isolation 3000 VDC


 EMS Protection
 EFT (IEC 61000-4-4) ±4 kV for Power Line
 ESD (IEC 61000-4-2) ±8 kV Contact for each Terminal


LED Indicators
 Status Yes, 1 as Power/Communication Indicator


 Analog Input
 Channels 1
 Range +4 ~ +20 mA
 Bandwidth 2.5 kHz
 Input Impedance 125 Ω


 Analog Output
 Channels 3
 Range +4 ~ +20 mA
 Accuracy ±0.1% of FSR (typical)
 Current Output Wiring Source
 Current Output Capacity 500 Ω


 Reverse Polarity Protection Yes
 Input Range +10 ~ +30 VDC
 Consumption 2.5 W


 Dimensions (mm) 33 mm x 127 mm x 99 mm (W x L x H)
 Installation DIN-Rail or Wall Mounting


 Operating Temperature -25 ~ +75 °C (-13 to 167 ℉)
 Storage Temperature -40 ~ +85 °C (-22 to 176 ℉)
 Humidity 10% ~ 95% RH, Non-condensing



 SG-3383     CR  3-channel DC Current Signal Splitter (RoHS) 1