SIES-8M-NO-24V-K-7,5-OE – Festo Inductive Sensors

USD $ 57.12 USD $ 46.84

SKU: Festo 551401

Manufacturer Part Number: Festo 551401
Festo Inductive Sensors: SIES-8M-NO-24V-K-7,5-OE
OEM Spec Ref 

The Festo SIES-8M-NO-24V-K-7,5-OE, with MPN 551401 Inductive Sensors, is a high-precision inductive sensor meticulously designed for robust and reliable operation in diverse industrial environments. This sensor is engineered to deliver precise detection and measurement, optimizing the performance of pneumatic systems and ensuring consistent system functionality.

Key Features:

  • Accurate Detection: Utilizes advanced inductive technology to provide precise proximity detection, which is crucial for maintaining optimal operational conditions and ensuring peak performance.
  • Rugged Construction: Crafted from durable materials, this sensor is capable of withstanding the harsh conditions of industrial settings, promising long-lasting service and reliability.
  • Compact Design: Its compact form factor allows for easy installation in tight spaces without compromising functionality or performance.
  • Easy Integration: Designed for straightforward connection, featuring a standard M12 connector for quick and reliable integration into existing systems.
  • Versatile Applications: Compatible with a wide range of industrial machines and systems, providing flexibility in deployment and use.


  • Enhanced System Efficiency: By providing reliable and accurate measurements, the sensor contributes to the overall efficiency and reliability of industrial processes.
  • Reduced Downtime: The sensor’s robust design minimizes maintenance requirements and reduces downtime, ensuring continuous operations.
  • Operational Cost Savings: Efficient operation and reduced maintenance lead to lower overall operational costs.
  • Improved Safety: Enhances operational safety by providing accurate and timely feedback, which is critical in automated and high-stake environments.


  • Manufacturing Automation: Ideal for integration into automated manufacturing lines, where precise detection is essential for the smooth operation of production processes.
  • Material Handling Systems: Plays a crucial role in conveyor systems and other material handling equipment, ensuring accurate positioning and detection.
  • Automotive Industry: Used in automotive manufacturing and assembly lines to detect the presence and position of various components.
  • Robotics and Assembly: Suitable for robotic arms and assembly systems that require precise and reliable sensor feedback to operate effectively.

The Festo SIES-8M-NO-24V-K-7,5-OE Inductive Sensor stands out as a top-tier component in Festo’s line of advanced sensing technology, offering sophisticated solutions for managing industrial automation with precision and reliability.

Technical Data

Feature Specification
Design for T-slot
Conforms to standard EN 60947-5-2
Symbol 00991643
Certification RCM compliance mark
c UL us – Listed (OL)
CE marking (see declaration of conformity) As per EU EMC directive
As per EU RoHS directive
KC characters KC EMC
Note on materials RoHS-compliant
Measured variable Position
Measuring principle Inductive
Rated operating distance 1.5 mm
Reduction factors Aluminum = 0.62
Stainless steel V2A = 0.95
Copper = 0.6
Brass = 0.72
Steel St 37 = 1.0
Ambient temperature -25 °C … 70 °C
Repetition accuracy under constant conditions <= 0.05 mm, approach from the side
Switching output NPN
Switching element function N/C contact
On time ≤1.0E-4 ms
Max. switching frequency 4500 Hz
Max. output current 150 mA
Max. switching capacity DC 4.5 W
Voltage drop ≤2 V
Inductive protective circuit Installed
Minimum load current 0 mA
Residual current ≤0.01 mA
Short-circuit protection Pulsed
Overload protection Available
DC operating voltage range 10 V … 30 V
Residual ripple 10 %
Idle current ≤10 mA
Reverse polarity protection for all electrical connections
Electrical connection 1, connection type Cable
Electrical connection 1, connection technology Open end
Electrical connection 1, number of pins/wires 3
Connection outlet orientation Longitudinal
Connector cable test conditions Flexural strength: as per Festo standard
Test conditions on request
Energy chain > 5 million cycles, bending radius 75 mm
Cable length 7.5 m
Cable characteristic Standard/suitable for energy chains
Color cable sheath Gray
Material of cable sheath TPE-U(PU)
Insulating sheath material PP
Size Slot 8
Type of mounting Flush with T-slot
Screwed tightly
Can be inserted in slot from above
Tightening torque 0.6 Nm
Mounting position Any
Mounting type Flush
Housing colour Black
Housing material PA
High-alloy stainless steel
Switching status indication LED yellow
Ambient temperature with flexible cable installation -5 °C … 70 °C
Degree of protection IP65
Insulation voltage 50 V
Surge resistance 0.8 kV
Corrosion resistance class (CRC) 3 – High corrosion stress
LABS (PWIS) conformity VDMA24364-B2-L
Suitability for the production of Li-ion batteries Metals with more than 1% by mass of copper, zinc or nickel by mass are excluded from use. Exceptions are nickel in steel, chemically nickel-plated surfaces, printed circuit boards, cables, electrical plug connectors and coils
Cleanroom class Class 4 according to ISO 14644-1
Contamination level 3
Selection of additional sensor information for T-slot
Electrical output NPN
Selection of sensor version Special design