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+
Authentication certificate
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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Power Socket Failure Modes: Loose Contacts, Heat and Arcing
Power socket failure modes in equipment include a damaged mating interface, loose or unsuitable terminations, inadequate mechanical retention, contamination and deterioration associated with heat or electrical discharge. A darkened housing is evidence to investigate, not a diagnosis by itself. Remove affected equipment from use under its approved isolation procedure and preserve the inlet, mating connector and connection records before replacing parts. This guide concerns panel-mounted equipment power inlets such as the LEMA IPZ family, not household receptacle repair. Qualified personnel must establish the complete fault and validate the correction; reconnecting a damaged inlet to see whether it works is not an acceptable investigation method. Define which part of the power interface failed An equipment power interface includes the supply cord, mating connector, inlet contacts, housing, mounting and internal terminations. Some arrangements also contain a fuse drawer, switch or other component. The observed symptom may arise at any of those boundaries. Record the exact configuration and component order codes before calling every failure a socket fault. A replacement inlet cannot correct a defective cord connector or an incorrectly assembled internal termination. Separate loss of power, intermittent operation and visible damage as observations. A device that stops operating may have an open connection, a protective device operation or a fault elsewhere in the equipment. A connector that moves may reflect panel retention or a mismatched mating interface. Use the original machine documentation and approved diagnostic process to establish which boundary is involved rather than replacing the most accessible part first. The LEMA IPZ power inlet product page supplies the real reference shown in the illustrations. Its picture does not prove the operating history or cause of damage in a separate assembly. Request...
↗Metal vs Plastic Limit Switch Enclosures: Evidence for Selection
Choosing a metal vs plastic limit switch requires comparing the complete switch against its installation, not declaring one material universally superior. Housing material affects the engineering questions you ask about mechanical loading, conductivity, chemical exposure and assembly. It does not by itself prove an ingress rating, a temperature limit, a safety function or a longer service life. Start with the exact material and model, then request evidence for the conditions your machine creates. This guide compares enclosure-selection decisions for mechanical position switches. The illustrations show a real LEMA metal-body product reference; they do not depict or claim a verified plastic-body equivalent. Compare complete products with the same job A housing is only one part of a limit switch. The actuator transfers target movement, the contact assembly supplies the required electrical state, and the entries and cover form part of the installed enclosure. Two products with different housings may also differ in contact duty, mounting dimensions or actuator travel. A comparison that attributes every difference to metal or plastic can lead to an incompatible substitution. Define the position-detection job first: target approach, movement, repeatability requirement, electrical interface and installation environment. Then compare candidate models against those requirements. Keep the same acceptance criteria for both candidates. If one product has documented evidence and the other has only a general description, record the evidence gap rather than estimating its performance from appearance or price. RealPars' limit switch anatomy and operation lesson helps separate the actuator, enclosure and contact mechanism. The LEMA limit switch application guide provides the broader position-detection context. Use those principles to set up a comparison, then rely on order-code-specific drawings and test information for actual product approval. Name the metal...
↗AC Power Socket Grounding and Protective Earth for Equipment
AC power socket grounding is the provision of an approved protective connection from the equipment's required exposed conductive parts through its power interface to the supply's protective system. At an equipment inlet, a third contact is only one part of that path. The mating cord, internal connection, enclosure bonding and installation must also be correct. Protective earth must not be confused with neutral or an electronic signal reference. This guide focuses on OEM equipment interfaces, not instructions for household wiring. Qualified designers and technicians must use the applicable equipment standard, installation requirements and manufacturer documentation when specifying or checking the complete protective arrangement. Identify the equipment protection concept first Determine whether the equipment uses protective earthing, double or reinforced insulation, or another approved protection concept. A plastic outer cover alone does not establish double insulation. A metal enclosure alone does not define the complete earthing arrangement. Obtain the equipment's approved documentation and markings before selecting its inlet or cord assembly. A component chosen only from its apparent contact count can conflict with the protection system already used by the equipment. For equipment that requires protective earth, document the complete path rather than a single green-and-yellow wire. Identify the supply interface, cord protective conductor, inlet contact, internal termination and required bonding points. Record removable covers or assemblies that require a defined connection. Do not rely on paint-covered mechanical fasteners or incidental touching between parts unless the approved design provides and verifies that function. The LEMA IPZ equipment power inlet family is the product reference used here. Its photographs show physical configurations, not proof of a particular assembled machine's safety. Request the selected order-code drawing, terminal identification and applicable component information. A...
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