Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
M4-4
M4-4 Series
Compact Heavy Duty Limit Switch
Features
Compact heavy duty aluminum limit switch
Complete seal; IP67-rated
Positive-opening type available
VCTF or SJTO(18 AWG) bottom cable-out 2 or 3 meters; optional side-out
AC or DC M12 quick connect type available
Recognition(s)
CE – EN60947
UL – UL-508
CCC – GB14048.5-2008
RoHS Compliant
Reach Unaffected
Characteristics
Positive
Opening
Electrical
Contact
Terminal Type
Yes & No
3 Points
Contact Form(s)
Poles & Throws
Actuation Sequence(s)
Wire
Form C
SPDT
Break(1) Make(2)
Operating Temp.
AC Rated
DC Rated
IP
Oil
Resist
Dust
Resist
Water
Resist
Operating
Speed
-20 to 70 Celsius
5A 125-250V
0.4A 125V,
67
Yes
Yes
Yes
0.1mm to
0.5m/sec
Operation Frequency
Contact Resistance
Insulation Resistance
Vibration
Mechanically: 120/min
Electrically: 30/min
300mΩ max. (initial)
100MΩ min. (500VDC)
1.5mm amplitude at 1055Hz
Storage Humidity
Service Life (min.)
Dielectric Strength
85% RH max
Mechanically: 2,000,000 operations
500,000 (positive opening)
Electrically: 200,000 operations
1000VAC, 50/60Hz for 1 minute between noncontinuous terminals
Recommended tightening forces
Purpose
Mounting
Screw type
M5
Circuitry
Tightening
4.9~5.88N⋅m
14
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
M4-4
Materials
Actuation touch part
Electrical contact point
Enclosure
Stainless Steel
Silver 99.9%
Aluminum alloy
Nomenclature
Series:
Actuator:
Connection
type:
Positive
opening:
Cable:
M4 –
4101 –
Q–
Z–
AC
4101=Plunger
4102=Roller plunger
4102R=Cross roller plunger
4103=Bevel plunger
4104=Side rotary, roller 40°
4114=Side rotary, roller 50°
4106=Spring, coil
Blank=Bottom cable-out
S=Side cable-out
Q=M12 Quick connect
Blank=None
Z=Yes
2=2m VCTF
2L=2m SJTO
3=3m VCTF
3L=3m SJTO
AC=AC Type (only
applicable for suffix “Q”
M12 quick connect type)
Actuator with rubber boot
4111=Plunger
4112=Roller plunger
4112R=Cross roller plunger
DC=DC Type (only
applicable for suffix “Q”
M12 quick connect type)
Panel mount actuator
4310=Plunger
4311=Roller plunger
4312=Cross roller plunger
M12 Quick Connectors (AC/DC)
15
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
M4-4
Dimensions & Operating Characteristics
*Measurements are in millimeters
*Connection types and cable lengths do not affect dimensions and operating characteristics
*MD=Movement Differential=DT=Differential Travel
M4-4101
M4-4102
M4-4102R
16
M4-4103
M4-4104/4114
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
M4-4
M4-4111
M4-4112
M4-4112R
M4-4310
17
M4-4311
M4-4312
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
M4-4
M4-4106
Handling and Usage
The bottom of the Switch at the cable outlet is resin-molded. Secure the cable at a point 5 cm from
the Switch bottom to prevent exertion of excess force on the cable.
When bending the cable, provide a bending radius of 45 mm min. so as not to damage the cable
insulation or sheath. Excessive bending may cause fire or leakage current.
18
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Precautions for Safe Use
• Be sure to ground. Otherwise electric shock may result.
• Do not touch charged switch terminals while the switch is carrying current, otherwise electric shock may result.
• Do not disassemble or touch the inside while the power is turned on, otherwise electric shock may result.
• Do not handle products without proper protective gears; doing so may result in injury.
• Connect a fuse which has 1.5 to 2 times higher breaking current than the product, in order to prevent products from
short-circuit damage.
• On the occasion when using the switch with EN/IEC/GB ratings, use a 10 A fuse that complies IEC60269, either type
gG or gL.
• Operating conditions will affect product durability. Be sure to check with actual using conditions before usage.
• Do not drop the switch.
• Do not connect a Single Limit Switch to two power supplies that are different in polarity or type. This may increase
the risk of interference.
• Be sure to keep the load current less than the rated value. Otherwise, there is the possibility that the switch may be
damaged and/or burnout.
• Do not use the Switch by itself in atmospheres containing flammable or explosive gases. Arcs and heat resulted from
constant actuating may cause fire or explosion.
• Be sure to prevent foreign materials such as scrapped cable intrusion into the switch when wiring. Otherwise, there
is the possibility of spoiling normal operations.
• Do not wire to the wrong terminals.
• Using the Switch in a pressed-in state for an extended period of time can accelerate part deterioration and also lead
to failure to return to the original position. Check the Switch beforehand, and perform periodic inspection and
replacement.
• Do not store or use the switch at the following places: (i)where the temperature fluctuates greatly. (ii)where the
humidity is very high and condensation may occur. (iii)Where the vibration is great. (iv)Where there is direct sun light.
(v)Where exposed to salty winds. (vi)Where exposed to cutting powder, machining chips, oil, and chemicals inside the
protective doors. (vii)Where exposed to cleansers, thinners, and other solvents.
• Do not use or store the Switch in locations with corrosive gas, such as sulfuric gas (H2S or SO2), ammonium gas
(NH3), nitric gas (HNO3), or chlorine gas (Cl2), or high temperature and humidity. Otherwise, contact failure or
corrosion damage may result.
• Do not disassemble and/or modify the switch at any time. Otherwise, there is the possibility of spoiling the normal
operation.
• Do not apply deformative and/or degenerative forces to products.
• If products have been used over an extended period of time or uses stated in products datasheets, contact reliability
may still degrade due to natural oxidation; resulting in inadequate conductivity, which may lead to an accident. Please
swiftly preform inspections and insure proper replacements are carried out.
• Only allow certified professionals to preform installing and maintenance tasks.
108
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Precautions for Correct Use
Operating Environment
• This switch is only for indoor use. If it is used in outdoor, it may cause switch failure.
• Take special care if products are to be used at places where there is fine powder, mud and/or foreign materials
accumulating. Check actual using conditions before using. If this is unavoidable, highly recommend integrating
protective equipment. This is considered not Moujen’s obligations.
• Seal material may deteriorate if a Switch is used outdoor or where subject to special cutting oils, solvents, or
chemicals. Always appraise performance under actual application conditions and set suitable maintenance and
replacement periods. This is considered not Moujen’s obligations.
• Install Switches where they will not be directly subject to cutting chips, dust, or dirt. The Actuator and Switch must
also be protected from the accumulation of cutting chips or sludge.
❌Incorrect
Correct
• Constantly subjecting a Switch to vibration or shock can result in wear, which can lead to contact interference with
contacts, operation failure, reduced durability, and other problems. Excessive vibration or shock can lead to false
contact operation or damage. Install Switches in locations not subject to shock and vibration and in orientations that
will not produce resonance.
• The Switches have physical contacts. Using them in environments containing silicon gas will result in the formation
of silicon oxide (SiO2) due to arc energy. If silicon oxide accumulates on the contacts, contact interference can occur.
If silicon oil, silicon filling agents, silicon cables, or other silicon products are present near the Switch, suppress arcing
with contact protective circuits (surge suppressor) or remove the source of silicon gas.
• If the Switch will be left in a location outside the storage environment conditions, if condensation has formed, or after
long term storage exceeding one year, at the minimum, check the operating characteristics, contact resistance,
insulation resistance, and dielectric strength. And conduct a check under the operating conditions.
Handling & Usage
• Do not remove or replace any built-in switches. Doing so may damage the product, resulting in increased risk of
malfunctioning.
• Do not use excessive force to insert, remove or twist keys of key-selector products. Doing so may damage the
product, resulting in increased risk of malfunctioning.
• Do not actuate products and hold its position for excessive amounts of time. Doing so will reduce the life of the
internal spring as well as structural integrity; thus, increase risk of malfunctioning.
• Do not bend or twist cables with excessive force. When bending is required, provide a bending radius of 45 mm min.
so as not to damage the cable insulation or sheath. Excessive bending may cause fire or leakage current.
• To change the installation position of the actuator: By loosening the Allen-head bolt on the actuator lever, the position
of the actuator can be set anywhere within 360°.
• To change the orientation of the head: By removing the head screws (two or four screws), mounting in any of four
orientations is possible. Be sure to change the plunger for internal operations at the same time. The roller plunger can
be set in either of two positions at 90°.
• Flipping the roller to a different side: Loosen the Allen-head bolt, allows flipping the roller to the opposite side.
• Adjusting the length of the rod or lever: The length of the rod or lever can be adjusted by loosening the Allen-head
bolt.
• Adjusting the rolling arm lever: (i) The roller arm can be set freely within a range of 225° after loosening the nut. (ii)
The roller arm mounting bracket can be set in any direction after loosening the nut.
109
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Mounting and Tightening
• Please view each individual product page’s allowed parameters for details.
• Please follow these parameters diligently. Otherwise products may not function properly.
Wiring & Cabling
• Use M3.5-nylon insulation covered crimp terminals (round type)
• Appropriate wire size is AWG18.
• Do not supply electric power when wiring. Otherwise electric shock may result.
• Do not pull on the wires with excessive force.
• Avoid connecting the wires directly to the terminal. Instead, attach using a crimp terminal.
• Grounding is only installed on models with ground terminals.
• In the case of prewired connector and direct connector: Holding the connector certainly when pulling connector. Do
not pull the cable with excessive force.
Conduit Installation
• The connector must be tightened at a suitable tightening torque. Tightening with excessive torque could damage the
case.
• Select the connector based on the sealed rubber inner diameter for matching the cable outer diameter.
• When mounting the connector, use seal tape (not needed if the connector includes an O-ring) on the threaded
section of the connector to ensure sealing performance.
• To ensure compliance of this Switch with the CSA standards, use of a waterproof connector compliant to CSA
regulations.
• Using an inappropriate connector or assembling Switches incorrectly (assembly, tightening torque) can result in
malfunction, leakage current, or fire. Be sure to read the connector instruction manual thoroughly beforehand.
• Even when the connector is assembled and set correctly, ends of the cable inside the Switch may come in contact.
This can lead to malfunction, leakage current, or fire. Thus, be sure to protect the end of the cable from splashes of oil
or water and corrosive gases.
• The following wiring is recommended for preventing the entry of fluids from the conduit opening.
No envelopment of cable jacket in
conduit. Exposed single wires.
Partial/loose envelopment of cable
jacket in conduit
❌Incorrect
❌Incorrect
Full envelopment of cable jacket in
conduit.
Correct
Actuating Terminology
110
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Integrating into systems – Limit Switches
• Carefully determine the position and shape of the dog or cam so that the actuator will not abruptly snap back, thus
causing shock. In order to operate the Limit Switch at a comparatively high speed, use a dog or cam that keeps the
Limit Switch turned ON for a sufficient time so that the relay or valve will be sufficiently energized.
• The method of operation, the shape of the cam or dog, the operating frequency, and the travel after operation have a
large influence on the durability and operating accuracy of the Limit Switch. The cam or dog must be smooth in shape.
Correct
❌Incorrect
Correct
❌Incorrect
Correct
❌Incorrect
111
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
❌Incorrect
Correct
• Appropriate force must be imposed on the actuator by the cam or dog in both rotary operation and linear operation. If
the dog touches the lever as shown below, the operating position will not be stable.
❌Incorrect
Correct
• Unbalanced force must not be imposed on the actuator. Otherwise, wear and tear on the actuator may result.
❌Incorrect
Correct
• Mount so that the actuator travel after operation (OT) is not exceeded. If the travel after operation (OT) exceeds the
limit, switch failure could result. When mounting the Limit Switch, be sure to adjust the Limit Switch carefully while
considering the whole movement of the actuator.
• When using a pin-plunger actuator, make sure that the stroke of the actuator and the movement of the dog are
located along a single straight line.
❌Incorrect
Correct
112
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Terms and Conditions Agreement
Read and understand
Please carefully read and understand all information published (on all platforms authorized by Moujen), before
purchasing. Purchasing any Moujen products expresses your understanding and agreement towards the terms and
conditions erected by Moujen Electric Co., Ltd. If you do not understand any information published, you are always
welcome to consult with an official Moujen representative, and other authorized affiliates.
Limited Warranty
(a) LIMITED WARRANTY. MOUJEN’S LIMITED WARRANTY WARRANTS THAT PRODUCTS WILL BE FREE
FROM DEFECTS IN MATERIALS AND WORKMANSHIP FOR A PERIOD OF TWELVE MONTHS; FROM THE
DATE OF SALE BY MOUJEN (OR SUCH OTHER PERIOD EXPRESSED IN WRITING BY MOUJEN).
MOUJEN DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED.
(b) MOUJEN MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT A
PARTICULAR PURPOSE OF THE PRODUCTS. BUYER ACKNOWLEDGES THEMSELVES THAT THE
PRODUCTS WILL SUITABLY MEET THE REQUIREMENTS OF THEIR INTENDED USE.
(c) Resolutions. Moujen’s sole obligation shall be, at Moujen’s discretion, to: (i) replace the non-complying Product
(in the form originally shipped. Buyer is responsible for labor charges for removal or replacement thereof.), (ii)
repair the non-complying Product, or (iii) repay or credit Buyer an amount equal to the purchase price of the
non-complying Product.
All resolutions must first be initiated through Return Merchandise Authorization procedures. Only testing sample
products may not initiate Return Merchandise Authorization procedures. Only gratuitous and testing sample
products are not subjected to monetary obligations; and have Limited Liabilities.
Moujen shall not be responsible for warranty, repair, indemnity or any other claims or expenses regarding Products
unless Moujen’s analysis confirms that the Products were properly handled, stored, installed and maintained; and
not subject to contamination, abuse, misuse or inappropriate modification. Return Merchandise Authorization of any
Products by Buyer must be approved in writing by Moujen and authorized affiliates.
Moujen further disclaims all warranties and responsibilities of any type for claims or expenses based on
infringements by Products or otherwise of any intellectual property rights. Moujen shall not be liable for the
suitability or unsuitability or the results from the use of Products in combination with any electrical or electronic
components, circuits, system assemblies or any other materials or substances or environments. Any advice,
recommendations or information given orally or in writing, are not to be interpreted as an amendment or addition to
the above warranty.
Return Merchandise Authorization
All Buyers initiating Return Merchandise Authorization (also known as RMA) must provide Proof of Transaction
documentation, and Pictures or Videos detailing potentially non-compliant areas. All received information and
documentation are subjected to Moujen’s Privacy Policy.
(a) Non-compliancy inquiries: Buyers initiating RMA may provide Moujen and affiliates, to their best knowledge,
with: (i) Pictures or Videos of how products are installed in system(s), (ii) Pictures or Videos of how products are
actuated in system(s), (iii) Pictures or Videos of electrical energies subjugated to Moujen products, (iv) System
schematics relating to Moujen product in question, and (v) Pictures or Videos of packaging when received.
Additionally, once products are in shipped state, Moujen retains full rights to not accept and/or authorize returns due
to Buyer’s own mismanagement. Signed orders shall not be subject to cancellation or modification either in whole
or in part without Seller's written consent and then only with terms that will reimburse Seller for all applicable costs
incurred by virtue of the sale; including costs of purchased materials, engineering costs and a reasonable allowance
for profit. Seller's written consent must be given in advance of Buyer's return of Products for credit. Seller reserves
the right to cancel any sale of Products without liability to Buyer (except for refund of monies already paid), if the
manufacture or sale of the goods is or becomes technically or economically impractical.
113
moujenglobal.com
Moujen Electric Co., Ltd. (Taiwan HQ) - Since 1961
Limitation on Liability
MOUJEN SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
LOSS OF PORFITS, OR PRODCUTION OR COMMERCIAL LOSS IN ANY WAY CONNECTED WITH THE
PRODUCTS, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE OR STRICT
LIABILITY.
Moujen disclaims any and all liability for any errors, inaccuracies or incompleteness contained in any datasheet or
in any other disclosure relating to any product. Statements regarding the suitability of products for certain types of
applications are based on Moujen's knowledge of typical requirements that are often placed on Moujen products in
generic applications. Such statements are not binding statements about the suitability of products for a particular
application. IT IS THE CUSTOMER'S RESPONSIBILITY TO VALIDATE THAT A PARTICULAR PRODUCT WITH
THE PROPERTIES DESCRIBED IN THE PRODUCT SPECIFICATION IS SUITABLE FOR USE IN A PARTICULAR
APPLICATION. Parameters provided in datasheets and/or specifications may vary in different applications and
performance may vary over time. All operating parameters, including typical parameters, must be validated for each
customer application by the customer's technical experts. Product specifications do not expand or otherwise modify
Moujen's terms and conditions of purchase, including but not limited to the warranty expressed therein.
Further, in no event shall liability of Moujen exceed the individual price of the Product on which liability is asserted.
Suitability of Use
Moujen shall not be responsible for conformity with any standards, codes or regulations which apply to the
combination of the Product in the Buyer’s application, or use of the Product. At Buyer’s request, Moujen will provide
applicable third-party certification documents identifying ratings and limitations of use which apply to the Product.
This information by itself is not sufficient for a complete determination of the suitability of the Product in combination
with the end product, machine, system, or other application or use. Buyer shall be solely responsible for
determining appropriateness of the particular Product with respect to Buyer’s application, product or system. Buyer
shall take application responsibility in all cases.
NEVER USE THE PRODUCT FOR AN APPLICATION INVOLVING SERIOUS RISK TO LIFE OR PROPERTY OR
IN LARGE QUANTITIES WITHOUT ENSURING THAT THE SYSTEM AS A WHOLE HAS BEEN DESIGNED TO
ADDRESS THE RISKS, AND THAT THE MOUJEN PRODUCT(S) IS PROPERLY RATED AND INSTALLED FOR
THE INTENDED USE WITHIN THE OVERALL EQUIPMENT OR SYSTEM.
Specifications
ALL PRODUCT, PRODUCT SPECIFICATIONS AND DATA, THROUGH CONTINUOUS RESEARCH, ARE
SUBJECT TO CHANGE WITHOUT NOTICE TO IMPROVE RELIABILITY, FUNCTION OR DESIGN OR
OTHERWISE.
114
moujenglobal.com