Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
100% Manufactory
Set up since 2012, our company own the factory, and experienced.
PROFESSIONAL MANUFACTURER OF MICRO SWITCHES
Waterproof and dustproofdesign (IP67)
Compact size andcompact structure
Long lifespan andhigh reliability
Product Quality
Uiled have obtained relevant CCC, CQC, UL, VDE, CE, ENEC enterprise and relevant product certifications.
Sales Market
We have gained a global sales network reaching many countries over North America, South America, Europe, Africa and South East Asia.
After-Sales Service
A complete service network has been established to respond to user requests within 24 hours.
PRODUCTS
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
The core products include micro switches and travel limit Switch, push button switch, foot switch, toggle switch, AC power socket.
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ABOUT LEMA
Lema is committed to R&D, production and sales of industrial control electrical switches. The company's core products include micro switches and travel limit Switches, push button switches, foot switches, toggle switches, AC power socket.
After nearly 30 years of steady development, Lema has become a large-scale professional manufacturer of micro switches in China. The company currently covers an area of more than 11,000 square meters.
2000Years
Established in
40+
Exporting countries and regions
10000m2
Factory floor area
60+
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APPLICATION
Committed to research and development, production, sales of industrial electrical switches and connectors
INDUSTRIAL
AUTOMATION
Industrial automation empowers smart manufacturing with reduced manual labor, higher precision, and greater efficiency.
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NEWS
Stay updated with the latest developments, product launches, and industry insights.
Micro Switch Temperature Rise Test: Validate the Loaded Assembly
A micro switch temperature rise test evaluates heating in a defined loaded assembly relative to a defined ambient reference. It needs more than a warm-to-the-touch judgment or a single resistance reading. Establish the exact switch, terminal connection, conductor, enclosure, current duty and acceptance basis before testing. Record temperature over time until the method's stabilization requirement is met, then compare both temperature rise and absolute temperature with the applicable limits. This guide helps OEM buyers prepare a representative test request without inventing a universal temperature limit for every micro switch. Start with the decision the test must support State whether the work is a development comparison, investigation of a field complaint, supplier qualification or a formal compliance evaluation. These purposes can require different specimens, methods and reports. A quick bench comparison can identify a suspicious connection, but it cannot automatically replace a prescribed product or equipment test. Agree who owns the test specification and who will approve the result. Identify the full switch code and drawing revision. Add terminal type, mating connector, conductor material and size, connection process and any mounting hardware that influences the installation. A result obtained with one connection cannot simply be assigned to another arrangement. The heat source might be a contact path, a loose connector, a conductor or an external component near the switch. The KW7 series page is a starting point for an inquiry about a physical switch family. The KW7 selection guide organizes the wider component review. Request the exact supported variant data and any applicable test conditions from Lemaele. Do not turn a family-level current marking or operating ambient statement into an assumed temperature-rise limit. The complete application must remain within the relevant...
↗Micro Switch Parallel Contacts: Why Current Ratings Do Not Add
Micro switch parallel contacts should not be used to add current ratings unless the manufacturer explicitly supports the arrangement and its conditions. Two contacts do not necessarily close together, share current equally or open together. The first contact to close and the last to open may face a different duty from the steady parallel combination. For an OEM build, define the purpose of paralleling, examine each credible contact state and select a supported switching arrangement instead of treating two catalog ampere values as arithmetic capacity. Clarify the reason for a parallel path A proposal to connect contacts in parallel can start with several different problems: insufficient current capacity, a desire to keep a circuit available, or an attempt to reduce resistance. These are separate objectives. Write down the actual requirement before changing the harness. A circuit that remains energized after one contact sticks may satisfy an availability objective while violating the intended stop behavior. Draw every contact, common terminal and wire connection. Identify whether there are two separate switches, two independent poles in one device, or the NO and NC terminals of an SPDT mechanism. Those arrangements cannot be treated as equivalent. In particular, the two throws of an SPDT switch are alternate destinations; joining them does not create two independently specified simultaneous closed poles. Use the micro switch wiring guide to establish the normal terminal logic before discussing a changed topology. Confirm the actual variant and diagram from the supplier. The KW7 family provides a physical product reference, but its appearance does not establish pole independence, synchronized operation or permission to parallel contacts for a higher load. Close view of two separate KW7 specimens with unconnected terminals. Product-reference illustration;...
↗Micro Switch Capacitive Loads: Review Inrush Before Selecting Contacts
A micro switch capacitive load needs a closing-current review, even when its steady running current is small. Charging the load's input capacitance can create a short current pulse that a normal running-current measurement misses. Select contacts against the exact voltage, circuit, switching duty and supported load evidence; do not assume a resistive-load marking also approves an electronic power input. This guide explains how an OEM can describe that pulse, examine practical mitigation options and prepare a useful supplier review without inventing a universal capacitive-load rating. Identify what the switch actually energizes Begin with the equipment schematic and the real load, rather than the name on the finished appliance. A switch that enables a logic input sees a different circuit from a switch that connects power to an electronic controller. Both assemblies may draw the same running current elsewhere in the machine. Trace the current through the contact during closing, normal operation and opening, including alternative supply paths and any input filtering. List the supply voltage range, whether the switched path is AC or DC, the input capacitance where known, and the load manufacturer's startup information. Include power-supply current limiting and cable resistance. If the load is a purchased module, ask its manufacturer for the relevant input behavior rather than estimating everything from the nameplate wattage. A switching power supply can present a more complicated input than a single ideal capacitor. The KW7 series product page is a starting point for identifying the physical switch family. Ask Lemaele to confirm the complete variant, terminal arrangement and supported electrical duty for your circuit. A family photograph or a headline current value does not establish a capacitive switching capability. Retain the exact drawing...
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