D4B-1171N

Overview of Omron D4B-1171N

The Omron D4B-1171N is a safety limit switch with a metal roller lever actuator. It features snap-action contacts with a direct opening mechanism designed for reliable safety operation. The switch supports a double-pole double-throw (DPDT) contact configuration and is rated for 10 A switching current up to 600 VAC, suitable for harsh industrial environments due to its IP67 protection.

Key Features of Omron D4B-1171N

• Contact form: DPDT (Double Pole Double Throw)
• Actuator: Metal roller lever with 12.7 mm diameter roller
• Rated current: 10 A
• Rated voltage: Up to 600 VAC
• Protection rating: IP67 (dust-tight and waterproof)
• Mechanical durability: 30 million operations minimum (snap-action type)
• Electrical durability: 500,000 operations minimum at 10 A resistive load, 250 VAC
• Operating speed: 1 mm/s to 0.5 m/s
• Operating frequency: Mechanical up to 120 ops/min, Electrical up to 30 ops/min
• Operating temperature: -40 to 80 °C (no icing or condensation)
• Direct opening mechanism for NC contacts ensuring safety in faults
• Insulation resistance: 100 MΩ minimum at 500 VDC between terminals
• Shock resistance: 1,000 m/s² (destruction), 300 m/s² (malfunction)
• Vibration resistance: 10 to 55 Hz, 0.75 mm amplitude (malfunction)
• Body dimensions: Approx. 40 x 43 x 77 mm
• Weight: Approx. 250 g

Technical Specifications

Applications / Use Case

The D4B-1171N is suitable for safety monitoring, position detection, and limit switching in industrial machinery and automation systems. Its high durability, protection rating, and direct opening mechanism make it ideal for ensuring operator safety and reliable mechanical feedback in harsh environments.