Defalcarea codului de model
| Segment de cod | Descriere |
| APT | Marca (a low-voltage electrical brand under Siemens, formerly Shanghai Second Electric Works) |
| LA39 | Familie de produse (APT classic pushbutton switch serie) |
| E | Sub-serie (桅16mm miniature pushbutton, suitable for compact panel control) |
| 11 | Configurarea contactului (1 NU + 1 NC, standard contact combination) |
| F | Head shape (square flat-head pushbutton) |
| Y | Button color (Galben) |
- Parametrii tehnici de bază
| Parametru | Valoare |
| Diametrul orificiului de montare | Φ16mm (standard miniature mounting size) |
| Tensiune nominală de izolație | AC 250V 50Hz |
| Curent termic | 5O |
| Viața mecanică | 1,000,000 operațiuni (standard for general pushbuttons) |
| Viața electrică | AC-15: 100,000 operațiuni; DC-13: 50,000 operațiuni |
| Temperatura ambiantă | -25℃~55℃ |
| Temperatura de depozitare | -30℃~70℃ |
| Frecvența de operare | 1200 operațiuni/oră |
| Grad de protectie | IP40 (partea din față) |
| Certificari | CCC, CE, RoHS |
- Caracteristicile produsului & Aplicații
Caracteristicile produsului
- Design compact: Dimensiune mică, ideal for compact and intensive panel control
- Instalare ușoară: Modular snap-in connection for convenient installation and maintenance
- Reliable Contact: Self-cleaning contacts with positive break design for stable connection
- Tip operațiune: Momentan (self-resetting) butonul de apăsare, automatically returns when released
- Appearance: Square head with bright yellow color for easy identification
Aplicații tipice
Industrial automation control panels
Machine tool operation interfaces
Textile machinery control
Marine electrical systems
Power equipment signal indication
Medical equipment control
- Modele alternative & Informații de comandă
Alternative Models in the Same Series
| Model | Diferenţă |
| LA39-E11F/G | Green square pushbutton, other parameters identical |
| LA39-E11F/R | Red square pushbutton, other parameters identical |
| LA39-E11F/B | Blue square pushbutton, other parameters identical |
| LA39-E11/G | Round yellow pushbutton, different head shape |
| LA39-E11J/Y | Rectangular yellow pushbutton, different head shape |
Official Ordering Info
Standard Order No.: 101802139 (corresponds to LA39-E11F/Y)
Ambalare: Individually packaged; discounts available for bulk orders
Perioada de graţie: Articol în stoc obișnuit, typically shipped within 5 zile
- Note de selecție
- Compatibilitate de montare: Ensure panel cutout is Φ16mm, compatible with other 16mm series pushbuttons
- Electrical Matching: Load current ≤5A, voltage ≤250V
- Modul de operare: Momentary type; select LA39-E11TF/Y for latching function
- Mediu: Potrivit pentru medii industriale generale; higher IP rating recommended for harsh conditions
- Color Usage: Yellow typically for warning or special function indication, adjustable by application
- Brand Background
APT (formerly Shanghai Second Electric Works) was founded in 1993 and fully acquired by Siemens in 2008. It is now a professional low-voltage electrical brand under Siemens, focusing on R&D and manufacturing of pushbuttons, lumini indicatoare, relee, etc. As a core product line, the LA39 series is widely used in global industrial control for its high reliability, long life and complete specifications.
APT-LA39-E11F-Y is a Φ16mm miniature square yellow momentary pushbutton from Siemens APT (formerly Shanghai Second Electric Works) LA39‑E series, cu 1 NU + 1 NC contacts.
Yellow is commonly used for warning, debugging, așteptare, jogging, reset, and intervention functions rather than main start/stop operations.
- Automatizare industrială & Control Cabinets
Fault reset and alarm acknowledgment on electrical cabinets and PLC control panels
Manual jogging, punerea în funcţiune, and maintenance mode switching
Standby start, bypass control, and safety intervention
- Mașini-unelte & CNC Equipment
Auxiliary action jogging for lathes, mașini de frezat, machining centers
Temporary manual control of tool changers, lubrication and cooling systems
Machine tool alarm reset and safety bypass
- Light Industry Machinery & Assembly Lines
Commissioning and fine-tuning for packaging, umplere, imprimare, utilaje textile
Temporary jogging of conveyors and sorting equipment
Quick reset of abnormal equipment status
- HVAC, Refrigeration, Fani & Pompe
Maintenance and commissioning for air conditioning and chiller units
Manual test and reset for fan and pump control cabinets
Auxiliary control for fire exhaust and fresh air systems
- Distribuția energiei & Ring Main Units
Signal reset in low-voltage switchgears, ring main units and terminal boxes
On-site manual testing of circuit breakers and contactors
Operation buttons for inspection and commissioning in power distribution rooms
- Engineering Machinery, Ships & Vehicles
Auxiliary control in engineering machinery cabs and on-board electrical cabinets
Miniature operation buttons on ship bridges and engine control consoles
Function control for special vehicles and sanitation trucks
- Medical, Laboratory & Instrument Equipment
Commissioning, calibration and reset for medical devices and testing instruments
Jog control for small laboratory equipment and test benches
Instruments requiring compact installation with limited panel space
- Lifturi, Ridicare & Echipamente logistice
Inspection jog buttons in elevator car top/pit inspection boxes
Auxiliary control for lifting platforms, freight elevators and parking systems
Temporary manual operation for sorting and lifting equipment
Suitable for all industrial control scenarios requiring Φ16mm miniature mounting space and yellow pushbuttons for warning, debugging, reset or jogging functions.
Complete List of Siemens APT Product Series (2026 Mai recent)
Siemens APT (formerly Shanghai Second Electric Works) is a professional brand specializing in low-voltage electrical and industrial control components. Its product portfolio covers 8 core categories: pushbuttons/indicator lights, cam switches, relee, întreruptoare de circuit, warning beacons, current transformers, limit switches, and control boxes, providing a full industrial control solution from miniature components to large protection devices.
- Pushbutton Switch Series (Linia de produse de bază)
- LA39 Series (Classic General Purpose, Φ12/16/22/30mm)
LA39-E: Φ16mm miniature pushbuttons (de ex., LA39-E11F-Y, yellow square momentary type)
LA39-A/B/C: Φ22mm standard pushbuttons with flat, mushroom, key-operated heads
LA39-T: Illuminated pushbuttons with LED
LA39-EM: Metal pushbuttons for harsh environments
Caracteristici cheie: Modular snap-in, self-cleaning contacts, positive break, viata mecanica >1,000,000 cicluri
- PB3 Series (Quick Mount, Φ22mm)
Tool-free quick installation
Multiple operator head combinations for modern control panels
Suitable for mass production and fast maintenance
- LA42 Series (Compact, Φ16mm)
Ultra-slim profile, economisind spațiu
Momentary/latching optional, 1NO/1NC standard
For small equipment and instruments
- LA58 Series (Greutate, Φ30mm)
Rezistență mecanică ridicată, shock-resistant
For metallurgy, mining and harsh environments
Supports high-current loads up to 10A
- Special Function Pushbuttons
| Serie | Caracteristici | Aplicații |
| LA39-BT | Double pushbutton | Two-hand safety control |
| LA39-ER | Oprire de urgență | Emergency machine shutdown |
| LA39-K | Key-operated | Access control and locking |
| LA39-Z | Rotary knob | Mode switching and adjustment |
- Indicator Light Series
- AD16 Series (Classic General Purpose, Φ16/22/30mm)
AD16-16: Φ16mm miniature LED indicators, putere redusă
AD16-22: Φ22mm standard indicators, luminozitate ridicată, viata lunga
AD16-30: Φ30mm large indicators for long-distance visibility
Culori: Roşu, Galben, Verde, Albastru, Alb, Portocale
- AD11 Series (Flush Mount)
Flush with panel surface
For clean rooms, food processing and hygienic environments
IP65 waterproof, dustproof and moisture-proof
- AD09 Series (Micro Indicator, Φ9mm)
Ultra-small for high-density panels
Low current draw for battery-powered devices
Widely used in instruments and medical equipment
- Cam Switch Series
- LW39 Series (Universal Cam Switches)
LW39-16A: 16A thermal current, switching angles 30°/45°/90°
LW39-25A: Medium current for motor control
LW39-40A: High current for power distribution
LW39-N: For relay protection industry, fiabilitate ridicată
Aplicații: Control circuit switching, distribuția puterii, motor forward/reverse
- LW26 Series (Cam Switches)
Multi-position, complex logic control
Modular, customizable contact combinations
For automated production lines and machine tools
- LW8 Series (Miniature Cam Switches)
Dimensiune compactă, economisind spațiu
2–4 positions, 1–2 contact sets
For instruments and small equipment
- Relay Series
- SR Series (General Purpose Electromagnetic Relays)
Standard 8-pin/11-pin base, internationally compatible
Evaluarea contactului: AC250V/5A, DC24V/3A
Coil voltages: AC24V/110V/220V, DC12V/24V
For control circuit switching and signal amplification
- NR Series (Power Relays)
High contact rating: AC250V/10A, DC24V/5A
Excellent vibration resistance for automotive and high-speed lines
Low coil power consumption
- ER Series (Relee de siguranță)
Compliant with EN60947-5-1, for safety circuits
Positive-guided contacts for guaranteed break
For elevators, hoisting and safety-critical systems
- HR Series (Time Relays)
Modes: la întârziere, întârziere la oprire, interval delay
Timing range: 0.1s~100h, accuracy ±5%
Digital display or knob adjustment available
- Circuit Breaker Series
- ATH Series (Miniature Circuit Breakers, 6A~63A)
Compliant with IEC60898, 6kA capacitate de rupere în scurtcircuit
Thermal-magnetic trip, protectie la suprasarcina si scurtcircuit
For final distribution and control cabinet power protection
- ATZ Series (Întreruptoare cu carcasă turnată, 16A~800A)
Modular design with expandable accessories
Optional earth leakage protection for personnel safety
For workshop distribution and large equipment protection
- ATQ Series (Isolating Switches, 100A~2500A)
Curent nominal ridicat, switchable under load
Visible break point for safe maintenance
Main switches for low-voltage distribution systems
- Other Core Product Series
- Warning Beacon Series
TL Series: Multi-layer signal beacons with audible-visual alarm
TL-50ED Series: LED source, putere redusă, viata lunga
Aplicații: Equipment status, alarma de eroare, safety alerts
- Current Transformer Series
ALH Series: 0.66kV low-voltage transformers, accuracy 0.2~0.5 class
ALH-K Series: Split-core type, installable without busbar disassembly
ALH-B Series: High-ratio transformers for high-current systems up to 6300A
Aplicații: Contorizarea energiei, protecţie, monitorizarea puterii
- Limit Switch Series
ALS1 Series: Standard limit switches, Protectie IP67
ALS3 Series: Slow-make type for precise positioning
ALS5 Series: Heavy-duty, high shock resistance
Aplicații: Machine travel control, automation positioning, elevator leveling
- Control Box Series
XKA Series: Plastic control boxes, ABS housing, shock-resistant, rezistent la coroziune
XKB Series: Metal control boxes, oţel inoxidabil, for outdoor and harsh environments
Customization: Custom cutouts and internal layout available
- Certificari de produs
Full series certified by CCC, CE, RoHS
Some products with UL, CSA certifications for North American market
- Supplementary Info for LA39-E11F-Y
Full Definition: APT LA39-E series (Φ16mm), 1NU+1NC, square flat head, yellow momentary pushbutton
Standard Order No.: 101802139
Matching Indicator: AD16-16 series Φ16mm yellow indicator for integrated operation and indication
Recommended Partner: SR series relays (de ex., SR-05DC110V) for signal amplification and control expansion
Siemens APT product series cover full industrial control scenarios, from miniature pushbuttons to large protection devices, for standard and harsh environments. The LA39 series, as APT’s classic line, is a top choice in industrial automation for its reliability and versatility.
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