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D4N
D4N Series Safety Limit Switches: Precision and Reliability for Industrial Safety
The D4N series represents a comprehensive line of safety limit switches designed for industrial automation and machine guarding applications. These robust electromechanical devices feature a positive-opening mechanism that ensures reliable circuit interruption even ...
D4N Series Safety Limit Switches: Precision and Reliability for Industrial Safety
The D4N series represents a comprehensive line of safety limit switches designed for industrial automation and machine guarding applications. These robust electromechanical devices feature a positive-opening mechanism that ensures reliable circuit interruption even in the event of contact welding or spring failure, meeting stringent international safety standards such as EN 60947-5-1 and ISO 13850. Available with various actuator types including plunger, roller lever, and adjustable rod, the D4N switches offer multiple contact configurations (SPDT, DPDT) with silver alloy contacts rated for high electrical endurance. The switches are housed in die-cast aluminum enclosures with IP67 protection, making them suitable for harsh environments. Key technical specifications include rated operational voltage up to 600V AC/DC, thermal current rating of 10A, and mechanical life exceeding 10 million operations. The positive-opening force is guaranteed at minimum 6N, ensuring fail-safe operation in critical safety circuits.
These safety limit switches are primarily deployed in industrial environments requiring machine guarding and position monitoring. Common applications include safety doors and interlocks on automated production lines, robotic cell perimeter protection, conveyor system emergency stops, and packaging machinery guard monitoring. They are also extensively used in material handling equipment, elevators, and heavy machinery where precise position detection and safety circuit integrity are paramount. The D4N series is particularly suited for applications requiring compliance with machinery directive 2006/42/EC and functional safety standards up to SIL 3 or PL e.
The D4N series encompasses several subcategories based on actuator type and contact configuration. Key article codes include D4N-1120 (plunger type, SPDT), D4N-2120 (roller lever, SPDT), D4N-3120 (adjustable rod, SPDT), D4N-4120 (side rotary, SPDT), and D4N-8120 (push-pull, SPDT). The article code structure follows the pattern D4N-[Actuator Code][Contact Code][Cable Entry Code], where actuator codes range from 1 to 9, contact codes indicate 1 (SPDT) or 2 (DPDT), and cable entry codes specify conduit type (0 for G1/2, 2 for M20). Additional variants include D4N-1A20 (with indicator light) and D4N-1B20 (with key lock mechanism).
At Electric Automation Network, we provide the complete D4N series with real-time pricing and stock availability through our multilingual portal. Our engineering team offers specialized technical support for safety circuit design and switch selection, ensuring compliance with your specific safety integrity level requirements. We maintain extensive inventory for express worldwide shipping, with typical delivery times of 24-48 hours for in-stock items. Each D4N switch includes full technical documentation including wiring diagrams, force-travel curves, and safety certification documents.
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