The Leuze LE3C/4W-200-M8 (Part Number: 50137191) is a high-performance throughbeam photoelectric sensor receiver from Leuze electronic's proven Series 3C (Germany). Operating exclusively as a dedicated optical receiver module, it pairs seamlessly with a matching Series 3C transmitter (LS3C / LS3C.8X) to create an ultra-reliable throughbeam optical light barrier spanning up to 10 meters.

KEY PRODUCT FEATURES AND OPERATIONAL ADVANTAGES:
1. Opposed Throughbeam Principle – 100% Surface & Color Independent:
Because the optical light beam travels directly from the transmitter into the receiver lens, detection accuracy is completely immune to object color variations (matte black, high-gloss white), metallic sheen, surface contours, or varying angles of entry. Any opaque target interrupting the beam is registered instantaneously.
2. Intelligent Early Warning Output (Warning Output - /4W):
A standout feature of the LE3C/4W model is its integrated diagnostic warning output on Pin 2. When optical excess gain drops below a safe operational margin due to dirt accumulation, oil film on lenses, or mechanical beam misalignment, the sensor sends a warning signal to the PLC. This enables predictive maintenance scheduling before unexpected line downtime occurs.
3. Miniature Cubic Housing (11.4 x 34.2 x 18.3 mm):
Its ultra-compact profile enables effortless integration into tight mechanical structures, robot end-effectors, test fixtures, and constrained machinery tracks where standard-sized sensors cannot fit.
4. High-Speed 1,000 Hz Switching Frequency & 0.5 ms Response Time:
With an ultra-fast response rate of 0.5 ms, it guarantees reliable counting, sorting, and position synchronizing on high-speed automated packaging and assembly lines without missing a cycle.
5. Durable Pigtail Cable with Metal M8 Connector (-200-M8):
Equipped with a 200 mm flexible cable terminating in a rugged metal 4-pin M8 male connector (A-coded), eliminating mechanical cable stress, reducing installation footprint, and ensuring quick plug-and-play maintenance.
6. Harsh Industrial Durability – IP67, IP69K & ECOLAB Certified:
Constructed with durable PC-ABS engineering plastic and a scratch-resistant PMMA lens window, achieving IP67 and IP69K washdown ratings (resisting high-pressure and high-temperature steam cleaning). ECOLAB certified for chemical resistance in food and beverage processing plants.

TYPICAL INDUSTRIAL APPLICATIONS:
• Automated Packaging & Bottling Machinery: Detection of bottles, cardboard boxes, blister packs, and containers on filling and capping conveyors.
• Electronics & Semiconductor Manufacturing: Component tray tracking, PCB presence verification, and leadframe monitoring in automated pick-and-place equipment.
• Smart Logistics & Material Handling: Parcel flow tracking and parcel positioning on automated high-speed sorting conveyors.
• Food, Beverage & Pharmaceutical Processing: Reliable operation across hygienic washdown zones subject to regular high-pressure CIP cleaning.

• Manufacturer: Leuze electronic
• Part Number / Model: LE3C/4W-200-M8
• Order Number (Part no.): 50137191
• Series: Series 3C (Cubic design)
• Brand Origin: Germany
• Device Type: Throughbeam photoelectric sensor receiver
• Compatible Transmitter: LS3C / LS3C.8X (Throughbeam transmitter)
• Special Design: Warning output for functional reserve (W)
• Guaranteed Operating Range: 0.05 ... 8.5 m (50 mm – 8,500 mm)
• Operating Range Limit: 0.05 ... 10 m (50 mm – 10,000 mm)
• Supply Voltage (UB): 10 ... 30 V DC (Residual ripple 0 ... 15%)
• Open-Circuit Current: 0 ... 20 mA
• Digital Switching Outputs: 2 independent outputs
• Switching Output 1 (Pin 4): Transistor PNP, Light switching
• Switching Output 2 (Pin 2): Transistor PNP, Warning output / UB switching
• Max Switching Current: 100 mA per output
• Max Switching Frequency: 1,000 Hz (1 kHz)
• Response Time: 0.5 ms
• Readiness Delay: 300 ms
• Protective Circuits: Polarity reversal protection, short-circuit protection
• Status Indicators: All-round visible LEDs (Power and Switching Status)
• Connection: 200 mm cable with metal M8 connector, 4-pin male (A-coded)
• Housing Dimensions (W x H x L): 11.4 mm x 34.2 mm x 18.3 mm
• Net Weight: 20 g
• Mounting Type: Through-hole mounting (Recommended M3 torque: 0.9 N·m)
• Housing Material: PC-ABS Plastic (Color: Red RAL 3000)
• Lens Cover Material: Optical PMMA Plastic
• Ingress Protection: IP 67, IP 69K (Resistant to high-pressure washdown)
• Protection Class: Class III
• Chemical Resistance Certification: ECOLAB
• Operating Temperature Range: -40 °C ... +60 °C
• Storage Temperature Range: -40 °C ... +70 °C
• Standards & Certifications: IEC 60947-5-2, cULus Listed