High temperature limit switch has rod lever with adjustable length of 25-140mm, contact type 1NO + 1NC and rated current/voltage 5A/220VAC.
Specification:
Model | CHN-HTLS-XWKI |
Weight | 258g |
Adjustable length of rod lever | 25-140mm |
Rated voltage | 220VAC (Customizable rated voltage is shown in the reference table below.) |
Rated current | 5A (Customizable rated current is shown in the reference table below.) |
Contact type | 1NO+1NC (NC pin: 1 & 2, NO pin: 3 & 4) |
Operating speed | 1mm/s~2m/s |
Operating frequency | Machinery: 120 times/minute Electric: 30 times/minute |
Contact resistance | <15MΩ, initial stage |
Insulation resistance | >100MΩ (<500VDC) |
Withstand voltage | Between no-connection terminals: 1000VAC, 50/60Hz lasts 1 minute Between the terminal and the contact: 2000VAC, 50/60Hz lasts 1 minute Between terminal and no-load current metal: 2200VAC, 50/60Hz lasts 1 minute |
Vibration | Misoperation endurance: 10~55Hz, 1.5mm, double-amplitude |
Impact | Mechanical endurance: >1000m/s2 (>100G) Misoperation endurance: >300m/s2 (>30G) |
Shell material | Cast aluminum alloy |
Temperature | -10~+350℃ (14~622℉) |
Humidity | <95%RH |
Working life | Machinery: >15million times Electric: >0.5million times |
Protection class | IP66 |
Reference table for customizable rated voltage and rated current:
Rated voltage | Rated current (A) |
Non-inductive load | Inductive load |
Resistive load | Lamp load | Inductive load | Motor load |
NC | NO | NC | NO | NC | NO | NC | NO |
125VAC | 10 | 3 | 1.5 | 10 | 5 | 2 |
250VAC | 5 | 2 | 1 | 5 | 3 | 1.0 |
480VAC | 3 | 1.5 | 0.8 | 3 | 1.5 | 0.8 |
600VAC | 1 | 1 | 0.5 | 1.5 | 1 | 0.5 |
8VDC | 10 | 6 | 3 | 10 | 6 |
14VDC | 10 | 6 | 3 | 10 | 6 |
30VDC | 6 | 4 | 3 | 6 | 4 |
125VDC | 0.8 | 0.2 | 0.2 | 0.8 | 0.2 |
250VDC | 0.4 | 0.1 | 0.1 | 0.4 | 0.1 |
Note:
- Power factor of inductive load is above 0.4 (AC). The time constant is below 7ms (DC).
- The inrush current of lamp load is 10 times that of steady state current, and the inrush current of motor load is 6 times that of steady state current.
Dimension (unit: mm):

Tips: 4 considerations of limit switches
- Please do not connect a power source of different polarity or different type to the contact of one limit switch.
- Please do not apply voltage between contacts during circuit design (may cause contact melting).
- Even in the event of an abnormal situation, there should be no short circuit (may lead to fusing of conductive parts).
- Limit switches used in electronic circuits (low voltage and low current).
- If the vibration and tremor of the contacts cause problems, please take the following measures.
- Insert the integrating circuit.
- The pulse caused by vibration and chatter shall be controlled below the disturbance tolerance of the load.
- In the fields with particularly high contact reliability requirements, the original silver contacts are not suitable. The performance of limit switches for small voltages and currents with gold contacts is better.
- In consideration of safety, Use b for the limit switch for emergency stop.
To prevent damage to the limit switch caused by a short circuit, connect a momentary fuse with a breaking current value equivalent to 1.5 to 2 times the rated current in series with the switch. When using EN certified ratings, use a 10A fuse gT or gG suitable for IEC60269.
High temperature limit switch has a rod lever with adjustable length from 25mm to 140mm. The internal contact switches 1NO + 1NC are casting from high temperature resistant material. So limit switch can be used in the 350℃ (622℉) high temperature occasion, such as coal mine machinery, vertical pit furnace, etc. Adjustable rod lever limit switch has automatic reset function. The default rated current and voltage is 5A/220VAC, other AC/DC voltage can be designed according to customer's requirement.