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DIN Rail Input Loop-Powered Isolators


Loop-Powered Isolators - DIN Rail Input for galvanic isolation | DRSL-LPI_Series

  • 1 Channel (DRSL-LPI-1) or 2 Channel (DRSL-LPI-2) Input Loop Powered Isolators
  • Powered by the Analog Input Current Signal Loop
  • 1:1 Signal Ratio
  • Low Input Voltage Drop
  • Fast Response Time <5 ms
  • High Conversion Accuracy, <0.1% of Span (0 to 20.5 mA)
  • Slimline 6 mm (0.24") Housing
Process Measurement and Control Instruments - View related products


The DRSL-LPI Series DIN rail input loop powered isolators provide a competitive choice in terms of both price and technology for galvanic isolation of current signals to SCADA systems or PLC equipment. These units provide isolation and 1:1 conversion of standard current signals and are powered by the analog input current signal loop.

The DRSL-LPI series offers isolation between input and output, provides surge suppression and protects control systems from transients and noise. These units also eliminate ground loops and can be used for measuring floating signals. Low power consumption facilitates DIN rail mounting without the need for any air gap. Measurement ranges are factory calibrated. These isolators operates over a wide temperature range from -25 to 70°C (-13 to 158°F).

    DRSL-LPI-1: 1
    DRSL-LPI-2: 2
Signal Range (Input to Output): 0 to 20.5 mA
Signal Conversion: 1 to 1
Functional Range: 0 to 23 mA (NAMUR NE43 compliant)
Start up Current: 10 µA typical
Input Overload: 50 mA max
Input to Output Voltage Drop: 1.25V + (0.015 x Vout) where Vout = Iout x Routput, typical
Input Voltage Drop: (Unit voltage drop) + Vout
    Output Load: 600Ω max
    Output Load Stability: <0.01% of span/100 Ω (span = 0 to 20 mA)
    Voltage Limit: 17.5V

Internal Consumption: 30 mW per channel
Isolation Voltage (Test): 2.5 kVac
Isolation Voltage (Working): 300 Vac
Signal/Noise Ratio: >60 dB
Cut-Off Frequency (3 dB): 100 Hz
Response Time (0 to 90%, 100 to 10%): <5 ms
Absolute Accuracy (at 25°C): ≤±10 µA + 0.05% of max value of selected span
Temperature Coefficient: ≤±2 µA/°C
EMC Immunity Influence: <±0.5% of span
Extended EMC Immunity NAMUR NE 21, A Criterion, Burst: <±1% of span

Operating Temperature: -25 to 70°C (-13 to 158°F)
Storage Temperature: -40 to 85°C (-40 to 185°F)
Calibration Temperature: 20 to 28°C (68 to 82°F)
Relative Humidity: 0 to 95% RH non-condensing
Protection Degree: IP20
Installation Area: Pollution degree 2 and measurement/overvoltage category II

Dimensions: 113 H x 6.1 W x 115 mm D (4.4 x 0.24 x 4.5")
Weight: 70 g (0.15 lb) approx
DIN Rail Type: DIN EN 60715 - 35 mm
Wire Size: 0.13 x 2.5 mm²/AWG 26 to 12 stranded wire
Screw Terminal Torque: 0.5 Nm
Place Order(Specify Model Number)
Part Number/ Desc.
Availability: 1 week
RoHS compliant
DIN rail input loop-powered isolator, 1 channel
Availability: 9 weeks
RoHS compliant
DIN rail input loop-powered isolator, 2 channel
RAIL-35-1 Star
Availability: 1 week
RoHS compliancy undetermined
35 mm (1.4") DIN rail, 1 m (3.3') length
Availability: 1 week
RoHS compliant
Module stop (screwed onto DIN rail to support and hold mounted devices)
All amounts shown in EUR, GBP, or USD
Ordering Example: (1) DRSL-LPI-1 DIN rail input loop-powered isolator, 1 channel, £70.00  plus (1) DRSL-MOD-STOP Module stop (screwed onto DIN rail to support and hold mounted devices), £3.40  plus (1) RAIL-35-1 35 mm (1.4, £6.80, £70.00 + 3.40 + 6.80 = £80.20

Product Manuals:

Download Installation Guide for Signal Conditioners
Download DIN Rail Loop Powered Isolators