Description
The CNTD TZ-8112 limit switch from the TZ-8 series is an industrial mechanical limit switch with a straight roller piston, designed for accurate and repeatable detection of end positions and mechanical stops. The roller design reduces friction and wear when contacting moving parts, which ensures smooth switching and long service life even at high cycle rates.
Technical specifications
Type: mechanical limit switch
Model: TZ-8112
Actuator: straight roller piston
Contact arrangement: 1× NO + 1× NC (double circuit)
Operating speed: 5 mm/s to 0.5 m/s
Contact resistance: max. 25 m
Insulation resistance: min. 100 M (at 500 VDC)
Dielectric strength: 1500 VAC / 1 minute
Mechanical life: 1,000,000 cycles
Electrical life: more than 500,000 switching cycles
Operating temperature: -20°C to +70°C
Relative humidity: 95% RH
Protection: IP65
Body dimensions: 29 × 27 × 115 mm
Weight: 140g
Rated voltages and currents
| Resistive (AC) | 125VAC | 5 A | 5 A |
| 250VAC | 5 A | 5 A | |
| Resistive (DC) | 830 VDC | 5 A | 5 A |
| 125 VDC | 0.4A | 0.4A | |
| 250 VDC | 0.2A | 0.2A | |
| Induction (AC) | 125VAC | 3 A | 3 A |
| 250VAC | 3 A | 3 A | |
| Inductive (DC) | 830 VDC | 4 A | 4 A |
| 125 VDC | 3 A | 3 A | |
| 250 VDC | 3 A | 3 A | |
| Surge current | 12 A | 24 A |
Functions and features
Straight roller reducing friction and mechanical wear
Smooth and precise switching during linear movement
Double spring contact mechanism for long life
Sturdy aluminum alloy and reinforced plastic housing
Water, dust and oil resistant (IP65)
Stable electrical parameters for both AC and DC applications
Ideal for
Industrial automation
Conveyor systems
CNC and machine tools
Assembly and packaging lines
Precise detection of end positions and stops with minimal wear
Package contents
Limit switch CNTD TZ-8112
Why choose this product?
Clear table of rated voltages and currents
High mechanical and electrical durability
Roller design for reduced wear
Reliable operation in demanding industrial conditions
Proven quality of the CNTD TZ-8 series






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