LEM USA Inc.Switzerland

LA 25-NP/SP11

Current Sensors

CURRENT TRANSDUCER 1A 25:1000 25MA

LA 25-NP/SP11 is a closed-loop Hall current transducer with a nominal primary current of 1 A, measuring range of 0...±1.5 A, turns ratio of 25:1000, supply voltage of ±15 V, operating temperature of 0...+70 °C, and RoHS compliance.Checked against the datasheet

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Technical parameters

Datasheet-verified parameters

24 items
ParameterValue and test conditionsSource
Primary nominal RMS current1 A
Primary current, measuring range0 ... ±1.5 A
Secondary nominal RMS current25 mA
Turns ratio25 : 1000
Supply voltage±15 V (±5 %)
Current consumption10 + $I_{S}$ mA
Total error±0.5 % @ $I_{PN}$, $T_{A} = 25$ °C
Linearity error< 0.2 %
Electrical offset currentTyp ±0.05 mA, Max ±0.15 mA @ $I_{P} = 0$, $T_{A} = 25$ °C
Magnetic offset currentTyp ±0.05 mA, Max ±0.15 mA @ $I_{P} = 0$ and specified $R_{M}$, after an overload of $3 × I_{PN}$
Delay time to 90 % of the final output value< 1 μs for $I_{PN}$ step
Frequency bandwidthDC ... 150 kHz (-1 dB)
Ambient operating temperature0 ... +70 °C
Ambient storage temperature-25 ... +85 °C
Resistance of primary (winding)< 51 mΩ @ $T_{A} = 25$ °C
Resistance of secondary winding110 Ω @ $T_{A} = 70$ °C
Insertion inductance31 μH
Insulation resistance> 1500 MΩ @ 500 V, $T_{A} = 25$ °C
Mass22 g
RMS voltage for AC insulation test2.5 kV (50 Hz, 1 min)
Impulse withstand voltage16 kV (1.2/50 μs)
Creepage distance19.5 mm
Clearance19.5 mm
RoHSCompliant
All parameters (8)ExpandCollapse
Power
Primary current, measuring range0 ... ±1.5 A
Primary nominal RMS current1 A
Secondary nominal RMS current25 mA
Supply voltage (±5 %)±15 V
AC and DC characteristics
Frequency bandwidth (-1 dB)DC ... 150 kHz
Environment and package
Ambient operating temperature0 ... +70 °C
Other
Total error @ I_PN, T_A = 25 °C±0.5 %
Turns ratio25 : 1000

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DatasheetDatasheet · 480.7 KB · 2026-11-03
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