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| Shape / Structure | General-purpose Limit switches |
|---|---|
| service life | General type |
| Operating mechanism | Snap action |
| Actuator | Adjustable rod lever (3 dia. * 160, Stainless steel rod, 145 mm Max.), |
| Electrical ratings | 5 A at 250 VAC 4 A at 30 VDC |
| Frequency | 50/60 Hz |
| Switching mechanism | Self-reset mechanism |
| Contact configuration | Single-Pole, Double-Throw type |
| Contact form | 1c |
| Load | General load |
| Ratings (AC): Non-Inductive load | Rated voltage: 125 VAC, Resistive load: 5 A (NC) 5 A (NO), Lamp load: 1.5 A (NC) 0.7 A (NO) Rated voltage: 250 VAC, Resistive load: 5 A (NC) 5 A (NO), Lamp load: 1 A (NC) 0.5 A (NO) |
| Ratings (AC): Inductive load | Rated voltage: 125 VAC, Inductive load: 3 A (NC) 3 A (NO), Motor load: 2.5 A (NC) 1.3 A (NO) Rated voltage: 250 VAC, Inductive load: 2 A (NC) 2 A (NO), Motor load: 1.5 A (NC) 0.8 A (NO) |
| Ratings (DC): Non-Inductive load | Rated voltage: 8 VDC, Resistive load: 5 A (NC) 5 A (NO), Lamp load: 2 A (NC) 2 A (NO) Rated voltage: 14 VDC, Resistive load: 5 A (NC) 5 A (NO), Lamp load: 2 A (NC) 2 A (NO) Rated voltage: 30 VDC, Resistive load: 4 A (NC) 4 A (NO), Lamp load: 2 A (NC) 2 A (NO) Rated voltage: 125 VDC, Resistive load: 0.4 A (NC) 0.4 A (NO), Lamp load: 0.05 A (NC) 0.05 A (NO) Rated voltage: 250 VDC, Resistive load: 0.2 A (NC) 0.2 A (NO), Lamp load: 0.03 A (NC) 0.03 A (NO) |
| Ratings (DC): Inductive load | Rated voltage: 8 VDC, Inductive load: 5 A (NC) 4 A (NO), Motor load: 3 A (NC) 3 A (NO) Rated voltage: 14 VDC, Inductive load: 4 A (NC) 4 A (NO), Motor load: 3 A (NC) 3 A (NO) Rated voltage: 30 VDC, Inductive load: 3 A (NC) 3 A (NO), Motor load: 3 A (NC) 3 A (NO) Rated voltage: 125 VDC, Inductive load: 0.4 A (NC) 0.4 A (NO), Motor load: 0.05 A (NC) 0.05 A (NO) Rated voltage: 250 VDC, Inductive load: 0.2 A (NC) 0.2 A (NO), Motor load: 0.03 A (NC) 0.03 A (NO) |
| Explanation | The above values indicate the steady-state current. Lamp load has an inrush current of 10 times the steady-state current. Inductive load has a power factor of 0.4 Min. (AC) and a time constant of 7 ms Max. (DC). Motor load has an inrush current of 6 times the steady-state current. |
| Inrush current | NC: 20 A NO: 10 A |
| Cable specifications | VCTF oil-resistant cable, 4 cores (3 m) Diameter: 7.6 mm |
| Ambient temperature | Operating: -10 CEL to 70 CEL (with no icing or condensation) |
| Ambient humidity | Operating: 35%RH to 95%RH (with no icing or condensation) |
| Permissible operating speed | 1 mm/s to 1 m/s |
|---|---|
| Permissible operating frequency (Mechanically) | 120 operations / 1 minute Max. |
| Permissible operating frequency (Electrically) | 30 operations / 1 minute Max. |
| Contact resistance | 300 m Ohm Max. (Initial value) * Including the resistance of cable. (Measuring method is contact resistance meter.) |
| Insulation resistance | Between each terminal of the same polarities: 100 M Ohm Min. Between live-metallic part and ground: 100 M Ohm Min. Between each terminal and non-live-metallic part: 100 M Ohm Min. (at 500 VDC Megger) |
| Dielectric strength | Between each terminal of the same polarities: 1,000 VAC Between live-metallic part and ground: 1,500 VAC Between each terminal and non-live-metallic part: 1,500 VAC (50/60 Hz for 1 min) |
| Durability (Mechanically) | 500,000 operations Min. (No load) (Temperature, Humidityconditions: 5 CEL to 35 CEL, 40 %RH to 70 %RH) |
| Durability (Electrically) | 500,000 operations Min. (Resistive load 1 A at 125 VAC) (Temperature, Humidityconditions: 5 CEL to 35 CEL, 40 %RH to 70 %RH) |
| Vibration resistance (Malfunction) | Vibration frequency range: 10 to 55 Hz, Double amplitude: 1.5 mm, Contact opening: 1 ms Max. at the free position and the total travel position. |
| Shock resistance (Destruction) | 1,000 m/s2 |
| Shock resistance (Malfunction) | Contact opening is 1 ms Max. at the free position and the total travel position at 500 m/s2. |
| Degree of protection | Weather-proof type IEC60529 (JEM): IP67 |
| Applicable standard (UL) | Standard No.: UL508 File number: E76675 |
| Applicable standard (CCC(CQC)) | Standard No.: GB14048.5 File number: 2003010305077626 |
| Mounting specification | Front mounting |
| Operating Force (OF) | Standard value 5.69 N Max. |
|---|---|
| Release Force (RF) | Standard value 1.47 N Min. |
| Pre-Travel (PT) | Standard value 25 DEG Max. |
| Over-Travel (OT) | Standard value 40 DEG Min. |
| Movement Differential (MD) | Standard value 3 DEG Max. |
| Condition of operating characteristics | When the rod length is 38 mm |
Precautions for correct use:
Make sure that the panel to which the switch is mounted is flat. If the panel is warped or has protruding part, the switch may malfunction.
Note:
Rubber parts are made from silicone rubber. Cap-rubber is made from weather-proof rubber(Chloroprene rubber). Rotary shaft made from stainless steel. Screws are made from stainless steel.
As of March 1, 2008
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