SPECIFICATIONS

Brand Name: NONE

High-concerned chemical: none

Material: ABS

Model Number: CLS 171

Origin: Mainland China

CNTD CLS-171 Limit Switch

CLS-1 / CLS-3 Series | Plastic Rod Coil Spring Type | IP65 Water-proof / Oil-proof | Double Circuit Vertical Type

Key Features

Double-Circuit Snap-Action Contacts – 1NO + 1NC snap-action contact form; double circuit type of limit switch for flexible wiring in position-detection and interlock applications.
Plastic Rod Coil Spring Actuator – Flexible plastic rod with coil spring head; operating force 1N and release force 0.4N, ideal for detecting objects from varying directions.
IP65 Water-proof & Oil-proof – Small size economic plastic construction sealed against water and oil ingress; degree of protection IP65.
Long Mechanical Life – Built-in contact box has double-spring mechanism for longer mechanical life and stable repeated actuation.
Large Overtravel – Pretravel PT 30mm, overtravel OT 20mm, total travel TT 50mm with movement differential MD 14°; smooth operation with larger overtravel distance.
6A / 250V AC-15 Rating – Rated insulation voltage Ui 380V, conventional free air thermal current Ith 10A; DC-13: 0.3A / 220V; inrush current rating NC max. 24A, NO max. 12A.
CCC / CE / TUV Certified – CCC: GB/T14048.5; TUV & CE: EN 60947-5-1. Various actuators available within the CLS-1 / CLS-3 Series.

Product Overview

The CNTD CLS-171 is a vertical-type limit switch from the CLS-1 / CLS-3 Series, featuring a plastic rod coil spring actuator and snap-action 1NO + 1NC double-circuit contacts. Its economic plastic housing is small in size and water-proof and oil-proof with IP65 protection, and its built-in contact box has a double-spring mechanism for longer mechanical life. It offers smooth operation with a larger overtravel distance and a wide choice of actuators. It is widely used in machine tools, conveyors, lifts, automated equipment and household appliances for stroke positioning and overtravel protection.

Key Properties

Parameter	Value	Parameter	Value
Model	CLS-171	Brand	CNTD
Rated Voltage	250V AC (Ui 380V)	Rated Current	10A (Ith)
IP Rating	IP65	Operating Temperature	-20°C ~ +70°C (no icing)
Contact Configuration	1NO + 1NC Snap-action (Double Circuit)	Actuator Type	Plastic Rod Coil Spring
Material	Economic Plastic (vertical type)	Application	Machine Tools, Conveyors, Lifts, Automated Equipment
Origin	Zhejiang, China	Feature	Water-proof & oil-proof, double circuit, large overtravel
Operating Speed	5mm ~ 0.5 m/s	Operating Frequency	Electrical: 30 operations/min
Contact Resistance	25 mΩ max. (initial value)	Insulation Resistance	100 MΩ min. (<500V DC)
Vibration	10 ~ 55 Hz, 1.5mm double amplitude	Ambient Temperature	-20 ~ +70°C (no icing)
Humidity	≤95% RH	Electrical Life	300,000+ operations
Certification	CCC, CE, TUV

Detailed Specifications

Parameter	Value / Description
Operating Force (OF)	1N
Release Force (RF)	0.4N
Pretravel (PT)	30mm (length)
Overtravel (OT)	20mm (length)
Movement Differential (MD)	14° (angle)
Total Travel (TT)	50mm (length)
Tripping Position (TP)	22.5° ± 10%
Operating Speed	5mm ~ 0.5 m/s
Contact Resistance	Max. 25 mΩ (initial value)
Insulation Resistance	Min. 100 MΩ (at <500V DC)
Minimum Applicable Load	DC 24V 10mA or more
Rated Insulation Voltage (Ui)	380V
Rated Impulse Withstand Voltage (Uimp)	4kV
Conventional Free Air Thermal Current (Ith)	10A
Safety-Certified Ratings	AC-15: 6A / 250V (resistive load); DC-13: 0.3A / 220V (resistive load)
Inrush Current Rating	NC: max. 24A; NO: max. 12A
Dielectric Strength	• Between non-consecutive terminals: 1000V AC, 50/60 Hz, 1 min • Between current-carrying & non-current-carrying parts: 1500V AC, 50/60 Hz, 1 min • Between terminals & ground: 1500V AC, 50/60 Hz, 1 min
Vibration	Malfunction durability: 10 ~ 55 Hz, 1.5mm double amplitude
Shock	Mechanical durability: approx. 1,000 m/s² (~100G); Malfunction durability: approx. 300 m/s² (~30G)
Ambient Temperature	-20 ~ +70°C (no icing)
Humidity	≤95% RH
Electrical Life	300,000+ operations (AC 240V / 3A pure resistive load)
Protection Grade	IP65
Certification Specifications	CCC: GB/T14048.5; TUV: EN 60947-5-1; CE: EN 60947-5-1

Note: Values are based on the official CNTD website (cntd.com.cn) CLS-171 product page (CLS-1 / CLS-3 Series). The shock values are quoted on the official page as 1,000 m/sec (approx. 100G) mechanical durability and 300 m/sec (approx. 30G) malfunction durability. Please verify against the actual unit and supplied datasheet before installation or listing.