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TZ-8168 coil spring lever Limit Switch

Double-circuit type of limit switch.

Compact new design approximately 1/3 the size of TMAZTZ vertical limit switches.

With strong zinc cast base, and reinforced plastics outer shell, High. Structure preventing oil, water and pressure.

Structure enables the terminal section to be fully opened for easy wiring.

Degree of protection: IP65

Contact Form:

TZ-8108 Limit Switch

Product List

Technical Parameters



Rated voltageNoninductive Load (A)Inductive Load (A)
Resistance LoadLamp LoadInductive Load (A)Motor Load


Inrush CurrentN.C: below  24A, N.O: below  12A


1. Inductive load has a power factor of 0.4 min.(AC) and a time constant of 7 msec.max.(DC).

2. Lamp load has an inrush current of 10 times the steady-state current,while motor load has an inrush current of 6 times the steady-state current.

3. Product with spring, its usable range of operating part is within one third of the whole spring length from the front end of spring.


Operation speed0.5mm-50cm/sec
Operating frequencyElectical: 30 operations/minute
Contact resistance25mΩ max. (initial value)
Insulation resistance100MΩ Min. (below 500VDC)
ShockMechanical durable: 1, 000m/Sec2 (about 100G'S)
Malfunction: 300m/Sec2 (about 30G'S)
Ambient temperature-5~+65℃ (With no icing)
Humidity<95% RH
WeightAbout 130 to 190g
Degree of protectionIP65
Electrical LifeAbove 500000

Operating Characteristics

Operating Characteristics ModelTZ-8104TZ-8107TZ-8108TZ-8111TZ-8112TZ-8122TZ-8166TZ-8167TZ-8168TZ-8169
Operating forceOF   (Max)5.88N5.88N7.84N9.8N9.8N9.8N0.88N0.88N0.88N0.88N
Release forceRF   (Min)0.49N0.69N0.49N2.94N2.94N2.94N
Pre-travelPT   (Max)20°20°20°1.5mm1.5mm1.5mm30mm30mm30mm30mm
Over-travelOT   (Min)75°75°75°4mm4mm4mm
Movement differentialMD  (Max)10°10°10°1.2mm1.2mm1.2mm
Total travelTT   (Min)95°95°95°5.5mm5.5mm5.5mm
Operational positionOP26±0.8mm

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The Coil Spring Lever Limit Switch is a type of mechanical limit switch that utilizes a lever arm with a coil spring to actuate the switch. This type of switch is commonly used in industrial automation applications where accurate positioning or sensing is required.

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