Overview
The Turck Ni30-K40SR-BZ3X is an inductive proximity sensor designed for reliable object detection in industrial automation and manufacturing environments. Part of the proven NI30-K40 series, this 30mm sensing range sensor features cable termination for flexible installation and integrates directly into control circuits without additional wiring chambers.
Key Features
- 30mm sensing distance with 40mm diameter cylindrical housing
- AC/DC dual-voltage capable: 20-250VAC and 10-300VDC compatible
- NO (Normally Open) and NC (Normally Closed) selectable outputs
- Cable termination for direct controller connection
- ABS plastic housing with IP67 sealed rating
- 20Hz switching frequency (AC/DC 2-wire, 300mA output)
- LED indicator for visual status feedback
Technical Specifications
- Sensing Distance: 30mm (non-flush)
- Housing Diameter: 40mm cylindrical barrel
- Input Voltage AC: 20–250VAC (24VAC, 200VAC, 220VAC, 240VAC nominal)
- Input Voltage DC: 10–300VDC (12VDC, 24VDC, 48VDC, 120VDC, 200VDC, 250VDC nominal)
- Output Configuration: 2-wire AC/DC, 300mA maximum, NO/NC programmable
- Switching Frequency: 20Hz maximum
- Housing Material: ABS (Acrylonitrile Butadiene Styrene)
- Ingress Protection: IP67
- Operating Temperature: −25°C to +70°C
- Termination: Cable with M16×1.5 threaded entry
- Certifications: Network frequency 50–60Hz
Typical Applications
- Assembly line part presence and absence detection
- Position sensing for automated handling equipment
- Machine tool and CNC safety interlocks
- Production line count/rate monitoring
- Conveyor system object detection
- Packaging machinery control and verification
Compatibility & Replacements
Compatible With
- Turck NI30-K40 series ecosystem
- PLC inputs accepting 20-250VAC or 10-300VDC DC switching signals
- Standard industrial control voltage supplies (24VAC, 24VDC, 120VAC)
- Relay modules and discrete input cards with 300mA capacity
- Fixed and adjustable mounting hardware accepting M16×1.5 threads
Replaces / Drop-In Replacement For
- Turck NI30-K40SR-FZ3X2 (wiring chamber variant)
- Turck NI30-K40SR-VP4X2 (PNP variant, verify output voltage compatibility)
- Turck NI30-K40SR-VN4X2 (NPN variant, verify output voltage compatibility)
- Other Turck NI30-K40 series cable-terminated models
Works With
- Allen-Bradley CompactLogix and ControlLogix PLC input modules
- Siemens S7-1200 and S7-1500 discrete inputs
- Mitsubishi FX and iQ-R discrete input terminals
- Omron CP and NJ series controllers
- Schneider Electric Modicon M241 and M251
- Standard relay logic circuits with appropriate input protection




