Product Overview
The WLCA32-41 is a heavy duty limit switch equipped with a long roller arm actuator. It is used for mechanical position detection, travel-limit control, and machine operation feedback in industrial machinery and automation systems. The long roller arm design is suitable for applications where a moving mechanism, cam, rail, arm, beam, or stopper contacts the actuator over a larger movement range.
This page describes model WLCA32-41 only. The product is suitable for elevators, cranes, hoists, conveyors, machine tools, material handling systems, and other industrial equipment that requires reliable end-position or travel-limit detection.
Product Display
The WLCA32-41 uses a heavy duty switch body with a long roller arm actuator. The structure includes an aluminum alloy housing, rotary actuator head, long arm mechanism, roller end, terminal cover, sealing components, and conduit section for field wiring. The long roller arm allows the switch to be operated by larger machine movement or wider contact positions.
Key Technical Data
| Item | WLCA32-41 |
|---|---|
| Product type | Heavy duty limit switch |
| Actuator type | Long roller arm |
| Contact structure | Double-circuit contact |
| NO terminal | 3–4 |
| NC terminal | 1–2 |
| Protection degree | IP66 |
| Operating speed | 1 mm to 1 m/s |
| Operating force | 11.77 N max. |
| Pre-travel | 55° |
| Overtravel | 35° |
| Operating position | 90° ±10° |
| Electrical life | 500,000 operations or above |
Features
- Double-circuit contact structure for NO and NC control logic.
- Long roller arm actuator for mechanical position detection and travel-limit control.
- Aluminum alloy housing for high mechanical strength.
- Water-proof and oil-proof construction for industrial environments.
- Built-in contact box with double-spring mechanism for stable switching action.
- Long arm structure suitable for elevators, cranes, hoists, conveyors, and moving machine mechanisms.
- IP66 protection degree when properly installed and sealed.
- Other actuator configurations are available in the WL series for different machine structures. This page focuses on the WLCA32-41 long roller arm type.
Drawing
Outline and Mounting Dimensions
The drawing is used to confirm the product outline, mounting hole position, actuator head direction, arm clearance, roller contact position, conduit position, and installation space of the WLCA32-41. Before installation, confirm that the moving mechanical part can contact the roller smoothly within the allowable operating angle.
The actuator should not be used as a direct mechanical stopper. Excessive impact, misalignment, or insufficient overtravel allowance may affect contact stability and mechanical life.
Contact Form
WLCA32-41 uses a double-circuit contact structure with normally open and normally closed contacts. The normally open contact uses terminals 3–4 and closes when the actuator is operated. The normally closed contact uses terminals 1–2 and opens when the actuator is operated.
Wiring logic should be selected according to the control circuit. Safety-related circuits often use NC logic, but the final selection should follow the electrical design of the equipment.
Ratings
Rated Load Table
| 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 | 10A | 10A | 3A | 1.5A | 10A | 10A | 5A | 2A |
| 250VAC | 5A | 5A | 2A | 1A | 5A | 5A | 3A | 1A |
| 480VAC | 3A | 3A | 1.5A | 0.8A | 3A | 3A | 1.5A | 0.8A |
| 600VAC | 1A | 1A | 1A | 0.5A | 1.5A | 1.5A | 1A | 0.5A |
| 8VDC | 10A | 10A | 6A | 3A | 10A | 10A | 6A | 6A |
| 14VDC | 10A | 10A | 6A | 3A | 10A | 10A | 6A | 6A |
| 30VDC | 6A | 6A | 4A | 3A | 6A | 6A | 4A | 4A |
| 125VDC | 0.8A | 0.8A | 0.2A | 0.2A | 0.8A | 0.8A | 0.2A | 0.2A |
| 250VDC | 0.4A | 0.4A | 0.1A | 0.1A | 0.4A | 0.4A | 0.1A | 0.1A |
Load Type Notes
- Surge current: NC 30A under, NO 20A under.
- Inductive load has a power factor of 0.4 minimum for AC and a time constant of 7 ms maximum for DC.
- Lamp load inrush current is approximately 10 times the steady-state current.
- Motor load inrush current is approximately 6 times the steady-state current.
- For inductive, lamp, or motor loads, the inrush current should be considered during circuit design.
Specifications
Electrical
| Item | Specification |
|---|---|
| Contact resistance | 25 mΩ max., initial value |
| Insulation resistance | 100 MΩ min. at 500 VDC |
| Dielectric strength 1 | 1000 VAC, 50/60 Hz for 1 minute between terminals of the same polarity |
| Dielectric strength 2 | 1500 VAC, 50/60 Hz for 1 minute between current-carrying and non-current-carrying metal parts |
| Dielectric strength 3 | 1500 VAC, 50/60 Hz for 1 minute between each terminal and ground |
| Electrical life | 500,000 operations or above |
Mechanical
| Item | Specification |
|---|---|
| Operating speed | 1 mm to 1 m/s |
| Operating frequency | Electrical: 30 operations/min |
| Mechanical life | 15,000,000 operations or above |
| Vibration | 10–55 Hz, 1.5 mm double amplitude |
| Shock durability | 1000 m/s², approx. 100G |
| Shock malfunction | 300 m/s², approx. 30G |
Environmental
| Item | Specification |
|---|---|
| Ambient temperature | -20°C to +80°C, with no icing |
| Humidity | <95% RH |
| Degree of protection | IP66 |
Operating Characteristics
The following operating characteristics apply to model WLCA32-41 only. The mechanical stroke and actuator position should be checked according to the installation direction and the moving part of the machine.
| Parameter | Description | WLCA32-41 |
|---|---|---|
| OF | Operating force, maximum | 11.77 N |
| PT | Pre-travel | 55° |
| OT | Overtravel | 35° |
| OP | Operating position | 90° ±10° |
Selection Guide
Actuator and Motion Direction
WLCA32-41 uses a long roller arm actuator. It is suitable when the switch is operated by a moving arm, cam, rail, beam, or other machine component with a relatively large movement path. The roller should be contacted smoothly from the correct direction.
Electrical Load and Contact Rating
Before selecting WLCA32-41, confirm whether the circuit is AC or DC, the operating voltage, current, load type, and whether the control system uses NO or NC logic. For motor, lamp, or inductive loads, select the switch according to the inrush current and not only the steady-state current.
Stroke, Arm Clearance and Reset
The long arm actuator requires enough clearance for pre-travel, overtravel, and reset movement. The moving part must not force the arm beyond its allowable operating range. After actuation, the actuator should return smoothly to its original position.
Installation Environment
WLCA32-41 has an IP66 protection degree and is suitable for industrial environments with dust, oil mist, water splash, and general outdoor or equipment-side exposure. The conduit connector and cable entry must be properly sealed during installation.
Wiring and Contact Logic
The normally open contact uses terminals 3–4, and the normally closed contact uses terminals 1–2. Select the contact logic according to the control circuit. Safety or fault-detection circuits often use NC logic, but the final wiring method must follow the machine electrical design.