Overview
The Omron D4C-1720 is a compact, enclosed limit switch designed for general-purpose industrial control and automation systems. This model combines a roller lever actuator with robust sealing and die-cast aluminum housing, making it suitable for applications where space is limited and environmental protection is critical. The D4C series is known for reliability and is widely used across manufacturing, material handling, packaging, and machinery protection circuits.
Key Features
- Triple-sealed construction: Plunger section sealed via nitrile rubber packing and diaphragm; switch section sealed via nitrile rubber cap; cable entrance sealed via encapsulating material
- IP67 rating: Complete protection against dust ingress and immersion in water up to 1 m for 30 minutes
- Roller lever actuator: Sintered stainless steel roller with 17.5 mm diameter (R38 type), enabling positive engagement and smooth operation
- SPDT contact form: Single Pole Double Throw configuration for flexible circuit switching
- Die-cast aluminum housing: Lightweight yet rugged, suitable for gang mounting (up to 6 units)
- UL and CSA approved cable: SJT(O) oil-resistant vinyl cabtire cable provides high flexibility and extreme temperature resistance
Technical Specifications
- Model: D4C-1720
- Electrical Rating: 5 A at 250 VAC / 4 A at 30 VDC
- Contact Configuration: SPDT (Single Pole Double Throw)
- Actuator Type: Roller Lever (Sintered Stainless Steel)
- Cable Type: SJT(O), UL and CSA approved
- Cable Length: 5 meters
- IP Rating: IP67
- Operating Temperature: 5°C to 35°C (standard rating conditions)
- Housing Material: Die-cast Aluminum
- Sealing: Triple-sealed (nitrile rubber, encapsulating material)
- Mounting: Front panel mounting, M5 screw holes
- Compatible Software/Systems: Industrial controllers, PLCs, safety circuits, emergency stop systems
- Standards: Certified per EN 60947-5-1 (TÃœV Rheinland)
Typical Applications
The Omron D4C-1720 is ideal for:
- Machine guard and safety interlock circuits
- End-of-travel detection on linear actuators and cylinders
- Material handling and conveyor system limit detection
- Emergency stop (E-stop) verification circuits
- Wet, dusty, or washdown environments where sealed switches are required
- Compact applications with space constraints (16 mm flat profile)
- General-purpose industrial automation and position sensing
Compatibility & Replacements
Compatible With
- Allen-Bradley and Rockwell CompactLogix, ControlLogix, MicroLogix PLCs
- Siemens S7-1200, S7-1500, SIMATIC HMI systems
- Mitsubishi FX series and Q series PLCs
- Omron CJ, CP, and NX series industrial controllers
- Standard relay logic and hardwired control circuits
- 24 VDC and 120/240 VAC industrial control panels
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The D4C-1720 has a consistent footprint and mounting hole pattern within the D4C series. Related models in the same family include D4C-1202, D4C-1301, D4C-1402, and other D4C variants with different actuator types (plunger, pin, cross-roller).
Works With
- Industrial PLC programming software (Studio 5000, TIA Portal, GX Developer, CX-Programmer)
- Standard industrial communication protocols (PROFINET, EtherNet/IP, Modbus)
- Hardwired relay logic and contactor circuits
- 24 VDC and AC industrial control systems
- Safety-rated circuits (when properly integrated per ISO 13849-1)
- Programmable Safety Controllers (PSS)
