High Temperature Limit Switch with Adjustable Rod Lever

High Temperature Limit Switch with Adjustable Rod Lever

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.

SKU: CCHN-HTLS-ARDL

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Delivery date: 6-25 days

Overview

High temperature limit switch has rod lever with adjustable length of 25-140mm, contact type 1NO + 1NC and rated current/voltage 5A/220VAC. Its mechanical life is more than 15 million times and its electrical life is more than 500,000 times, which can be used for a long time.

Specification

Model	CCHN-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)

High temperature limit switch with adjustable rod lever dimension

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).
1. If the vibration and tremor of the contacts cause problems, please take the following measures.
  1. Insert the integrating circuit.
  2. The pulse caused by vibration and chatter shall be controlled below the disturbance tolerance of the load.
2. 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.
3. 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.