Product Model
WTB250-2R1551
Selling Points
- 1Compact and durable design with dimensions 20 mm x 65 mm x 43.9 mm.
- 2High performance in a compact housing with universal AC/DC voltage.
- 3Sensing range up to 1,000 mm with adjustable distance via potentiometer.
- 4Reliable detection with average service life of 100,000 hours at +25°C.
- 5Versatile switching outputs including NPN, PNP, and relay options.
Technical Specifications
Detailed engineering parameters based on manufacturer documentation
| Parameter | Value | Parameter | Value |
|---|---|---|---|
Functional principle | Photoelectric proximity sensor | Functional principle detail | Background suppression |
Dimensions (W x H x D) | 20 mm x 60 mm x 43.9 mm | Housing design (light emission) | Rectangular |
Sensing range max. | 200 mm ... 1,000 mm | Sensing range | 200 mm ... 1,000 mm |
Focus | Approx. 3° | Type of light | Visible red light |
Light source | LED | Light spot size (distance) | Ø 35 mm (1,000 mm) |
Angle of dispersion | Approx. 3° | Adjustment | Potentiometer, 2 turns#!#Potentiometer, 2 rotations |
Supply voltage UB | 24 V DC ... 240 V DC1)#!#24 V AC/DC ... 240 V AC/DC1) | Power consumption | ≤ 5 VA |
Switching output | Relay, electrically isolated | Output function | Change-over contacts |
Switching mode | Light switching | Switching current (switching voltage) | 3 A (240 V AC)#!#3 A (30 V DC) |
Response time | ≤ 15 ms | Switching frequency | 33 Hz |
Connection type | Cable, 5-wire, 2 m | Cable material | Plastic, PVC |
Conductor cross section | 0.76 mm² | Cable diameter | Ø 6.4 mm |
Circuit protection | A5)#!#C6) | Protection class | II |
Overvoltage category | 2 | Weight | 160 g |
Housing material | Plastic, ABS | Optics material | Plastic, PMMA |
Enclosure rating | IP67 | Items supplied | BEF-W250 mounting bracket |
Electromagnetic compatibility (EMC) | EN 60947-5-2 | Ambient operating temperature | –25 °C ... +55 °C |
Ambient temperature, storage | –40 °C ... +70 °C | UL File No. | NRKH2.E300503 & NRKH8.E300503 |
Specifications may be subject to change without notice