Page top


Limit Touch Switch


Object Actuates Switch and Turns Built-in Monitor Indicator ON

Model NL1 NL2 NL3
Degree of protection IP60
Supply voltage 12 VDC 24 VDC 100 VAC or 200 VAC
Rated frequency --- 50/60 Hz
Sensitivity Grounded object: Contact resistance of 3 kΩ max.
Non-grounded object: Antenna-to-ground capacitance of 100 pF min.
Current consumption 8 mA 15 mA ---
Leakage current --- Circuit: 2 mA; Antenna: 1 mA *1
Response time 5 ms max. 20 ms max.
Output signal Voltage output model: 30
mA at 12 VDC with output
impedance of 4.7 kΩ
Current output model:
24 VDC (directly
switching resistive load
of 170 mA max.)
Thyristor output model: 100 or 200
VAC (directly switching resistive load
of 30 to 300 mA) *2
Insulation resistance 0 V (blue lead wire) is connected to casing 100 MΩ min. at 500 VDC *3
Dielectric strength 0 V (blue lead wire) is connected to casing 1,500 VAC at 50/60 Hz for 1 min *3
Pollution degree
(operating environment)
3 (IEC947-5-1)
Protection against
electric shock
Class II
Proof tracking index
Switch category D (IEC335)
Vibration resistance 10 to 55 Hz, 1.5-mm double amplitude
Shock resistance 200 m/s2 max.
Ambient temperature -10°C to +60°C (with no icing)
Ambient humidity 35% to 95%RH
Weight Approx. 370 g (NL[]-C, -P) Approx. 550 g (NL[]-S) Approx. 680 g (NL[]-SP, -SC)

*1. The NL3 has a capacitor and resistor for the protection of the built-in SCR. Therefore, the NL3 has leakage current.
*2. The NL3 requires a current of 30 mA for circuit protection.
        If the load current is less than 30 mA, connect the bleeder resistance R in parallel with the load as shown below so
        that the total current of the load circuit will be 30 to 300 mA.
        Obtain R from the following formula.

NL Specifications 2

Make sure that the permissible power of the resistor is sufficient.

NL Specifications 3

*3. Between current-carrying and non-current-carrying metal parts