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IFM N0538A Switching amplifiers for Namur sensors


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SKU: N0538A Categories: , Tag:


  • For the operation of intrinsically safe sensors in hazardous areas
  • Reliable short-circuit and wire-break monitoring
  • Easy programming of the output function
  • LED d
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Product characteristics
Number of inputs and outputs Number of digital outputs: 2
Application short-circuit monitoring; Wire monitoring
Electrical data
Operating voltage tolerance [%] -15…25
Operating voltage [V] 24 DC
Current consumption [mA] < 50
Number of channels 2
Inputs / outputs
Number of inputs and outputs Number of digital outputs: 2
Electrical design opto coupler; (bipolar; Voltage: max. 40 V DC)
Number of digital outputs 2
Max. voltage drop switching output DC [V] 3
Max. current load per output [mA] 100
Switching frequency DC [Hz] 5000
Short-circuit proof yes
Operating conditions
Ambient temperature [°C] -20…60
Protection IP 20
Tests / approvals
Approval FIDI 20 ATEX 0022X; IECEx FIDI 20.0003X
ATEX marking
II 3 (1) G Ex nA [ia Ga] IIC T4 Gc

II (1) D [Ex ia Da] IIIC

I (M1) [Ex ia Ma] I
NE 21 (2012)
EN 61326-3-2 (2008)
UL approval
File number UL E521228
Mechanical data
Weight [g] 195.9
Displays / operating elements
switching status 2 x LED, yellow
operation LED, green
function 2 x LED, red
Caution The switching amplifier has to be mounted according to the requirements of the operating instructions
Free terminals must not be used.
Pack quantity 1 pcs.
Electrical connection
Connection terminals: …2.5 mm²
Other data
Maximum values for control circuit
in protection rating intrinsic safety [Ex ia Ga] IIC [Ex ia Ga] IIB [Ex ia Ga] IIA [Ex ia Ma] I
Voltage [V] 10.5 10.5 10.5 10.5
Current [mA] 17.1 17.1 17.1 17.1
Power [mW] 45 45 45 45
External inductance [mH] 121.5 486.3 972.7 1000
or Lo/Ro [mH/Ω] 0.79 3.16 6.33 10.39
External capacitance [µF] 2.41 16.8 75 95

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