LM514-N3 - SPDT Foot Switch | Honeywell Sensing
N.º de pieza: LM514-N3 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $215 | $215,00 |
| 5 | $198 | $990,00 |
| 10 | $182 | $1.820,00 |
| 25 | $165 | $4.125,00 |
| 50 | $152 | $7.600,00 |
LM514-N3 Descripción general
A foot switch is a ruggedized electromechanical switch activated by foot pressure on a pedal mechanism. It belongs to the broader category of limit switches and snap-action switches within industrial controls. The typical signal chain involves the pedal mechanism transferring force to an internal snap-action mechanism that rapidly opens or closes the electrical contacts, providing a debounced, reliable switching signal. Foot switches are widely used in industrial automation, medical equipment, and welding applications where hands-free operation enhances safety and ergonomics.
Key features of the LM514-N3 include its SPDT (Single Pole Double Throw) contact arrangement, allowing wiring flexibility for either normally-open or normally-closed operation. The switch is housed in a heavy-duty cast metal enclosure designed to withstand industrial floor environments, with a non-slip pedal surface for operator safety. The internal snap-action mechanism provides reliable switching with positive tactile feedback, ensuring consistent actuation across the rated mechanical life.
From a technical perspective, the LM514-N3 utilizes a snap-action mechanism with self-cleaning silver or gold alloy contacts to ensure low-resistance switching over millions of cycles. The robust mechanical construction includes a die-cast housing, a return spring calibrated for predictable actuation force, and a sealed switch cavity that resists ingress of dust and industrial contaminants commonly found on shop floors.
Typical applications include industrial machine tools (lathes, milling machines, drill presses), welding equipment foot controls, medical device activation, stamping and forming presses, woodworking machinery, and any application where the operator needs to maintain hand control of the workpiece while activating machine functions. Designers commonly pair the LM514-N3 with motor contactors, solenoid valves, and PLC discrete input modules.
When designing with the LM514-N3, ensure the actuation force and pedal travel are compatible with operator ergonomics and any existing safety requirements (such as EN 60204-1 or ANSI/NFPA 79 for industrial machinery). Consider installing a protective guard to prevent inadvertent actuation and verify the electrical ratings match the load type (resistive, motor, or lamp) to ensure contact longevity.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical integration notes that go beyond the manufacturer datasheet to help engineers select, source, and integrate the LM514-N3 foot switch into industrial control systems.
Alternativas directas para LM514-N3 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
LM514-N2
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
LM514-N1
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
514-N3
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
TWIN-514-N3
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
Herga 6241-EE
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
LM514-N3 Valores máximos y características eléctricas
| Contact Configuration | SPDT (Single Pole Double Throw) |
| Switch Operation | Snap Action, Momentary Foot Pedal |
| Switch Function | Off-Mom-On (Maintained-Momentary-Maintained pattern variant) |
| Actuator Type | Foot Pedal |
| Tipo de montaje | Free-Hanging (Floor Mounted) |
| Ingress Protection | IP40 (per datasheet reference, 500 Series foot switch family) |
| Hazardous Location Rating | Class I Div 1 Group D, Class II Div 1 Group G (500 Series family rating) |
| Pedal Surface | Non-slip tread pattern |
| Series | Honeywell 500 Series |
Guía de configuración de pines de LM514-N3 standard
Configuración de pines para LM514-N3 (encapsulado standard). La numeración de pines, las funciones y los diagramas de conexión se definen en la hoja de datos del fabricante. Consúltela para conocer el footprint exacto y las directrices de soldadura.
No hay datos detallados de patillaje disponibles para LM514-N3.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
LM514-N3 es adecuado para 7 aplicacións: Industrial Machine Tool Control, Welding Equipment Foot Control, Press Brake and Stamping Press Actuation, Medical Device Activation, Woodworking Machinery, Industrial Conveyor and Material Handling, Laboratory and Test Equipment Activation.
Industrial Machine Tool Control
The Honeywell LM514-N3 is widely deployed as the main ON/OFF foot control for industrial machine tools such as lathes, milling machines, drill presses, and grinders. Its SPDT contact arrangement allows wiring for either maintained or momentary machine actuation depending on the control logic. Operators depress the foot pedal to start the spindle or feed, freeing both hands to guide the workpiece. The heavy-duty cast-metal housing withstands accidental impacts and shop-floor contaminants. The 500 Series IP40 rating and Class I Div 1 Group D hazardous-location certification make it suitable for shop environments where flammable vapors may occasionally be present. Pair the LM514-N3 with a magnetic motor contactor or PLC discrete input module rated for the motor's inrush current.
Recomendado
Welding Equipment Foot Control
The LM514-N3 serves as a reliable foot pedal for welding power sources, plasma cutters, and resistance welders where the operator needs both hands to hold the welding torch and workpiece. The momentary SPDT action is ideal for energizing the welding contactor only while the pedal is depressed, providing inherent safety release if the operator falls or moves away. The 500 Series hazardous-location rating allows deployment in fabrication shops where combustible atmospheres may briefly occur. Pair the LM514-N3 with a welding contactor (such as a Lincoln or Miller foot-pedal interface) and ensure the contact rating covers the contactor coil inrush. Verify IP rating against the specific shop-floor washdown and dust conditions before installation.
Recomendado
Press Brake and Stamping Press Actuation
Foot switches like the Honeywell LM514-N3 are commonly integrated into mechanical and hydraulic press brakes, stamping presses, and punch presses where hands-free cycle initiation improves operator safety. The momentary pedal must be held depressed throughout the press cycle, providing fail-safe release if the operator's foot leaves the pedal. Many jurisdictions require dual palm-button or foot-pedal safety circuits for press actuation; the LM514-N3 SPDT configuration can be wired into such two-hand safety control circuits. The 500 Series rugged cast housing survives the high-vibration shop environment typical of stamping operations. Always integrate with a redundant safety relay such as a Pilz PNOZ s4 or Allen-Bradley Guardmaster to meet ANSI B11.1 press safety standards.
Recomendado
Medical Device Activation
In medical and dental equipment the LM514-N3 is used as a hands-free activation foot switch for electrosurgical generators, dental chairs, imaging equipment, and physiotherapy devices where sterile gloves make hand-actuated switches impractical. The momentary SPDT contact provides a clean signal that is easily interfaced with medical-grade microcontroller inputs via optocoupler isolation. The Honeywell brand reputation for reliability and the 500 Series hazardous-location rating support use in clinical environments. Ensure the specific medical device complies with IEC 60601-1 and that the foot switch's electrical ratings are compatible with the medical isolation barrier. Confirm the operator can actuate the pedal reliably while wearing surgical footwear.
Recomendado
Woodworking Machinery
Woodworking shops use the Honeywell LM514-N3 foot switch for table saws, planers, jointers, and dust-collector systems where the operator must hold the workpiece with both hands and needs a reliable hands-free way to energize the tool. The foot pedal allows the operator to back away from the blade quickly without losing control of the cut, a key safety advantage over toggle switches. Pair with a magnetic motor starter and a NEMA-rated disconnect for compliance with NEC 110 and UL 987 woodworking machinery requirements. The 500 Series cast housing tolerates sawdust accumulation that would jam plastic-enclosed switches. Consider adding a hinged guard over the pedal to prevent inadvertent actuation when the saw is not in use.
Recomendado
Industrial Conveyor and Material Handling
The LM514-N3 is used as a start/stop foot control for industrial conveyors, hoists, and material handling equipment where the operator needs both hands free to load or unload parts. The SPDT contact can be wired into a latching relay circuit for maintained ON operation, or directly as momentary control for jog functions. The heavy-duty 500 Series cast housing survives the impacts and vibrations of a busy warehouse or factory floor. Pair the LM514-N3 with a conveyor motor contactor, an E-stop safety circuit, and a speed-control VFD where variable-speed operation is required. Verify the IP rating against washdown or outdoor exposure before deployment.
Recomendado
Laboratory and Test Equipment Activation
Laboratory technicians use the Honeywell LM514-N3 as a hands-free activation switch for tensile testing machines, hydraulic presses, specimen cutters, and vibration test rigs where the experimenter must observe the apparatus while initiating the test cycle. The momentary SPDT action provides a clean contact signal compatible with data acquisition systems and PLC inputs. The 500 Series cast housing tolerates the chemical exposure and mechanical abuse of a laboratory environment. Pair the LM514-N3 with an optocoupler isolation module if interfacing directly with low-voltage logic inputs to protect the data acquisition system from contact arcing transients.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para LM514-N3 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | LM514-N2 | LM514-N1 | 514-N3 | TWIN-514-N3 | Herga 6241-EE |
|---|---|---|---|---|---|---|
| Brand | Honeywell | Honeywell | Honeywell | Linemaster | TOWER Manufacturing | Herga Technology |
| Package | 500 Series Foot Switch Housing (cast metal, floor mount) | 500 Series Foot Switch Housing - same | 500 Series Foot Switch Housing - same | Industrial Foot Switch Housing - equivalent class | Industrial Foot Switch Housing - equivalent class | Industrial Foot Switch Housing - equivalent class |
| Contact Configuration | SPDT | SPDT | SPDT | SPDT | SPDT | SPDT |
| Actuator Type | Foot Pedal | Foot Pedal | Foot Pedal | Foot Pedal | Foot Pedal | Foot Pedal |
| Switch Operation | Snap Action, Momentary | Snap Action, Momentary | Snap Action, Momentary | Snap Action, Momentary | Snap Action, Momentary | Snap Action, Momentary |
| Series / Family | Honeywell MICRO SWITCH™ 500 Series | Honeywell 500 Series | Honeywell 500 Series | Linemaster 500-class | TOWER 500-class | Herga 6200-series |
Diferenciadores clave
- Honeywell MICRO SWATCH 500 Series pedigree with hazardous-location certification (frente a Linemaster 514-N3)
- Snap-action mechanism with positive tactile feedback (frente a Generic industrial foot switches)
- SPDT contact flexibility for NO/NC wiring (frente a SPST-only foot switches)
Notas de diseño
Estimated: When wiring the LM514-N3 foot switch to a motor contactor coil, verify the coil inrush current does not exceed the LM514-N3's contact rating. Standard 120 VAC motor contactor coils draw 50-100 VA inrush; ensure the foot switch contact rating covers this. If the inrush exceeds the rating, use the foot switch to control an interposing relay (such as a Finder 55.34) with contact ratings sized for the contactor coil. Never wire the foot switch directly to a large motor starter coil without verifying contact ratings.
Mount the LM514-N3 on a flat, non-slip surface in a location that prevents accidental actuation from passing foot traffic or rolling equipment. Install a hinged guard or shroud over the pedal if inadvertent activation could create a safety hazard. Ensure the conduit entry faces the wiring side and route the cable through flexible liquid-tight conduit to allow pedal movement without stressing the terminations. Maintain at least 100 mm clearance around the pedal for operator foot placement and emergency foot removal.
Estimated: When interfacing the LM514-N3 to low-voltage logic inputs (3.3 V or 5 V PLC/DSP), use an optocoupler isolation module (such as a Panasonic AQV252G or Vishay VO2223B) on the switched contact to protect downstream electronics from contact arcing transients and to provide logic-level voltage translation. Add a 100 nF snubber capacitor across the switch contacts if switching inductive loads such as relay coils or solenoids, to suppress back-EMF that can weld contacts over time.
For high-cycle applications (more than 10 cycles per minute sustained), use the foot switch to control a latching relay or motor contactor rather than directly switching the load. The mechanical life of the LM514-N3 is finite and direct load switching accelerates contact wear. A pilot-duty wiring pattern (foot switch energizes the relay coil; relay contacts switch the actual load) extends service life and provides easier replacement of worn switching elements.
Información de cumplimiento
Compliance certifications for the LM514-N3 not stated in the provided Verified Web Data. The Honeywell 500 Series family datasheet references Class I Div 1 Group D and Class II Div 1 Group G hazardous-location certifications. RoHS, REACH, lead-free, and halogen-free status require confirmation from Honeywell Sensing's product compliance documentation.