Product Overview
The TZ-3101 is a waterproof vertical limit switch equipped with a plunger actuator. It is designed for mechanical position detection, travel limit control, and machine operation feedback in industrial automation systems. The snap-action contact mechanism converts mechanical movement into a reliable electrical switching signal.
This page describes model TZ-3101 only. The product is suitable for machine tools, conveyors, doors, safety interlocks, industrial equipment, and other applications requiring accurate mechanical position control in harsh environments.
Product Display
The TZ-3101 uses a compact metal housing with a plunger actuator, sealed contact mechanism, cable outlet structure, and mounting holes for industrial installation. The waterproof construction helps protect the internal switching components from dust, moisture, and oil exposure.
Key Technical Data
| Item | TZ-3101 |
|---|---|
| Product type | Waterproof vertical limit switch |
| Actuator type | Plunger actuator |
| Contact form | 1NO + 1NC snap-action |
| Protection degree | IP67 |
| Operating force | 11.77N max. |
| Release force | 4.41N min. |
| Pre-travel | 1.8mm max. |
| Overtravel | 3mm min. |
| Movement differential | 0.2mm max. |
| Operating position | 15.7 ± 1mm |
| Electrical life | 500,000 operations or above |
Features
- Double-circuit 1NO + 1NC snap-action contact structure.
- Waterproof and dust-resistant construction for industrial applications.
- High mechanical strength with aluminum alloy housing structure.
- Plunger actuator for direct mechanical position detection.
- Compact design for installation in limited machine space.
- Reliable switching performance with stable contact mechanism.
- Suitable for safety interlock, travel limit, and equipment position detection applications.
Drawing
Outline and Mounting Dimensions
The drawing provides the outline dimensions, mounting hole position, plunger travel direction, and installation clearance of the TZ-3101. Before installation, confirm that the moving part presses the plunger in the correct direction without excessive side force.
Contact Form
TZ-3101 uses a 1NO + 1NC snap-action contact structure. The normally open and normally closed contact logic should be selected according to the control circuit requirements.
For safety-related applications, NC contact logic is commonly used for fault detection, but the final wiring method should follow the machine electrical design.
Ratings
| Rated Voltage | Resistance Load NC | Resistance Load NO | Lamp Load NC | Lamp Load NO | Inductive Load NC | Inductive Load NO | Motor Load NC | Motor Load NO |
|---|---|---|---|---|---|---|---|---|
| 125VAC | 5A (0.1) | 5A | 1.5A | 0.7A | 3A | 3A | 2.5A | 1.3A |
| 250VAC | 3A | 3A | 1A | 0.5A | 2A | 2A | 1.5A | 0.8A |
| 8VDC | 5A (0.1) | 5A | 2A | – | 5A | 4A | 3A | – |
| 14VDC | 5A (0.1) | 5A | 2A | – | 4A | 4A | 3A | – |
| 30VDC | 4A (0.1) | 4A | 2A | – | 3A | 3A | 3A | – |
Specifications
Electrical
| Contact resistance | 15 mΩ max. initial value |
| Insulation resistance | 100 MΩ min. at 500VDC |
| Dielectric strength | 1000VAC between terminals of same polarity; 1500VAC between current and non-current parts |
Mechanical
| Operating speed | 1mm to 1m/s |
| Operating frequency | Electrical: 30 operations/min |
| Vibration | 10-55Hz, 1.5mm double amplitude |
| Shock | Mechanical approx. 100G; electrical approx. 50G |
Environmental
| Ambient temperature | -10°C to +70°C, with no icing |
| Humidity | <95% RH |
| Degree of protection | IP67 |
Operating Characteristics
| Parameter | Description | TZ-3101 |
|---|---|---|
| OF | Operating force | 11.77N |
| RF | Release force | 4.41N |
| PT | Pre-travel | 1.8mm |
| OT | Overtravel | 3mm |
| MD | Movement differential | 0.2mm |
| OP | Operating position | 15.7 ± 1mm |
Selection Guide
Actuator and Motion Direction
TZ-3101 uses a plunger actuator and should be installed where the moving part can press the actuator directly along its travel direction.
Electrical Load and Contact Rating
Confirm voltage, current, load type, and contact logic before selection. For inductive and motor loads, consider surge current during circuit design.
Stroke and Reset
The plunger stroke, overtravel, and operating position should match the machine movement. Avoid excessive side force that may affect actuator life.
Installation Environment
With IP67 protection, TZ-3101 is suitable for dusty, wet, and oily industrial environments when installed correctly.
Wiring Logic
Select NO or NC wiring according to the control system and safety requirements of the equipment.