Micro Limit Switch CNTD CM‑1743 CM‑1743N Long Roller Lever 15A 250VAC 1NO1NC Plastic Housing Travel Switch for Industrial Machin

Micro Limit Switch CNTD CM‑1743 CM‑1743N Long Roller Lever 15A 250VAC 1NO1NC Plastic Housing Travel Switch for Industrial Machin

$60.30

$60.30 $0.00

Description

SPECIFICATIONS

Brand Name: NONE

Material: ABS

Model Number: CM1743 CM 1743N

Origin: Mainland China

CNTD CM-1743 / CM-1743N Limit Switch

CM-1 / CM-1N Series | One Way Action Roller Short Pressing Plate Type | Snap-action | Industrial Grade

Key Features

Snap-action SPDT Contacts – 1NO + 1NC snap-action contact form for flexible wiring in position-detection and interlock applications.
One Way Action Roller Short Pressing Plate Actuator – Self-resetting roller short pressing plate with operating force 1.6N and release force 0.42N; operating position 43.1 ± 0.8mm, free position 43.6mm.
High Switching Capacity (15A) – High accuracy, wide range of operation speed and high make-and-break capacity; AC-15 safety certified rating 15A / 250V.
Two Housing Options – CM-1743: phenolic molding compound housing; CM-1743N: engineering plastics (PA66) shell for higher strength and resistant construction.
Wide Range of Actuators – Various actuator heads available within the CM-1 / CM-1N Series, some with adjustable operating position (such as CM-1701 / CM-1701N).
Wide Operation Speed Range – Operating speed 0.05mm to 1m/s; electrical operating frequency 20 operations/min; minimum applicable load DC 24V 10mA.
CCC / CE / TUV Certified – CCC: GB/T14048.5; TUV & CE: EN 60947-5-1. DC-13 certified rating 0.3A / 220V.

Product Overview

The CNTD CM-1743 and CM-1743N are horizontal-type limit switches with a one way action roller short pressing plate actuator and snap-action 1NO + 1NC contacts. The CM-1743 belongs to the CM-1 Series with a phenolic molding compound housing, while the CM-1743N belongs to the CM-1N Series with an engineering plastics (PA66) shell offering higher strength. They offer high accuracy, a wide range of operation speed and high switching capacity (15A), and are 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	CM-1743 / CM-1743N	Brand	CNTD
Rated Voltage	250V AC (Ui 380V)	Rated Current	15A AC-15; Ith 15A (CM-1743) / 10A (CM-1743N)
Operating Temperature	-20°C ~ +80°C (no icing)	Contact Configuration	1NO + 1NC Snap-action (SPDT)
Actuator Type	One Way Action Roller Short Pressing Plate	Material	CM-1743: Phenolic Molding Compound; CM-1743N: PA66 Engineering Plastics
Application	Machine Tools, Conveyors, Lifts, Automated Equipment	Origin	Zhejiang, China
Feature	High accuracy, wide operation speed range, high switching capacity (15A)	Operating Speed	0.05 mm ~ 1 m/s
Operating Frequency	Electrical: 20 operations/min	Contact Resistance	25 mΩ max. (initial value)
Insulation Resistance	100 MΩ min. (<500V DC)	Vibration	10 ~ 20 Hz, 1.5mm variable amplitude; malfunction durability: 10 ~ 55 Hz
Ambient Temperature	-20 ~ +80°C (no icing)	Humidity	<85% RH
Electrical Life	500,000+ operations (AC 240V / 3A resistive load)	Certification	CCC, CE, TUV

Detailed Specifications

Parameter	CM-1743 / CM-1743N
Operating Force (OF)	1.6N
Release Force (RF)	0.42N
Pretravel (PT)	2.7mm
Overtravel (OT)	2.4mm
Movement Differential (MD)	0.5mm
Operating Position (OP)	43.1 ± 0.8mm
Free Position (FP)	43.6mm
Operating Speed	0.05 mm ~ 1 m/s (plunger type)
Operating Frequency	Electrical: 20 operations/min
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)	CM-1743: 15A; CM-1743N: 10A
Safety-Certified Ratings	AC-15: 15A / 250V; DC-13: 0.3A / 220V
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	10 to 20 Hz: 1.5mm variable amplitude; malfunction durability: 10 to 55 Hz
Shock	Mechanical durability: approx. 1,000 m/s² (~100G); Malfunction durability: approx. 300 m/s² (~30G)
Ambient Temperature	-20 ~ +80°C (no icing)
Humidity	<85% RH
Electrical Life	500,000+ operations (AC 240V / 3A resistive load); 200,000+ operations (AC 240V / 10A resistive load)
Shell Material	CM-1743: Phenolic molding compound; CM-1743N: PA66 (engineering plastics)
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 / cntd.com) CM-1 Series and CM-1N Series (CM-1743 / CM-1743N) product pages. IP rating and terminal types are not specified on the official product pages; please verify against the actual unit and supplied datasheet before installation or listing.