The ALJ12A3-4-Z.N1 is an inductive proximity switch, which uses an electromagnetic field to detect the presence of metal objects. When a metal object comes into the proximity of the switch, it changes the electromagnetic field, which is detected by the switch and results in a change in its output state. This type of proximity switch is commonly used for detecting metal objects, such as metal parts or tools.

The ALJ12A3-4-Z.N1 is a cylindrical-shaped proximity switch with a 4mm diameter, making it suitable for use in compact or space-constrained applications. The “Z.N1” designation indicates that the switch is normally open (NO), meaning its output is normally in a high impedance state, but changes to a low impedance state when a metal object is detected. This type of switch is commonly used for applications such as part detection, tool detection, and material handling.

Specifications:

Detection range: 4mm ± 10%
Setting distance: 0-4.4mm
Delay distance: ≤10% of detection range
Detection object: Magnetic metal (detection distance decreases for non-magnetic metal)
Standard detection object: SPCC iron 12121mm
Response frequency: DC 0.8kHz, AC 50Hz
Supply voltage: DC 12-24V (6-36V) or AC 110-220V (90-250V) 50/60Hz
Withstand voltage: AC1000V 50/60Hz for 1 minute between charging part and housing
Voltage influence: ±15% of rated supply voltage (±10% detection distance)
Consumption current: ≤13mA (N/P type), ≤0.8mA (D type), ≤1.7mA (A type)
Control output: ≤200mA for N/P, D, and A types
Loop protection: Reversal connection protection, surge absorption, load short-circuit protection for N/P/D types, surge absorption for A type
Ambient temperature & humidity: Operation temperature -3065°C (no freeze, no dew); Operation humidity 3595%RH
Temperature influence: ±15% detection distance within -3065°C range, ±10% within -2560°C range
Insulation impedance: ≥50MΩ between charging part and housing
Material: Housing: nickel plated brass; Detection surface: ABS
Protection class: IP67
Cable length: 2m