The ALS AC current leakage sensors provide a highly accurate non-contact AC current leakage measurement. The sensors are designed for incorporation into products used for the measure of AC currents at the micro-ampere to milli-ampere level.
The sensors use a “zero flux” technique where a contravening magnetic field is introduced to offset the magnetic field from the primary conductor. Shielding and primary to secondary isolation provide a “noise free” secondary output signal proportional to the primary AC current.

Features:

• Incorporates high performance electromagnetic cores.
• Characterized by high sensitivity, accuracy, linearity, minimal phase shift.
• Suitable for harsh operating environments.

Specifications:

• Primary Input: micro-ampere to milli-ampere
• Input Frequency: 50 to 400HZ
• Secondary Output: 0 to 10VAC
• Dielectric resistance: 1000 Mohms @ 500Vdc
• Isolation voltage: 2500V RMS for 1 minute
• Surge Withstand: 5000V (1.2/50μs standard shock wave)
• Operating temperature: -40ºC to +85ºC
• Power Supply: ±12VDC or ±15VDC @ 10mA
• RoHS Compliant

Performance:

• Accuracy Class: 0.01, 0.02, 0.05
• Linearity: < 0.3%

Model	Input Measurement Range	Opening
ALS12B Data Sheet (616kb)	0.010 to 100mA	12.4mm (0.49″)
ALS25	0.010 to 100mA	26.0mm (1.02″)
ALS50 Data Sheet (592kb)	0.010 to 100mA	50.0mm (1.96″)
ALS75A	0.050 to 500mA	70.0mm (2.76″) with plastic sleeve
ALS85A	0.050 to 500mA	80.0mm (3.15″) with plastic sleeve
ALS100C	0.050 to 500mA	95.0mm (3.74″) with plastic sleeve