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OT1250E04CP CHANGE-OVER SWITCH
D4DL/DS/DH/DR/GL/NL/NH/NS
D4DL/DS/DH/DR/GL/NL/NH/NS: Industrial Control and Automation Relays
These products represent a comprehensive family of industrial control relays, including time-delay relays, monitoring relays, and interface modules. Designed for DIN-rail mounting in control cabinets, these relays offer various functions such as on-delay, off-delay, star-delta ti...
D4DL/DS/DH/DR/GL/NL/NH/NS: Industrial Control and Automation Relays
These products represent a comprehensive family of industrial control relays, including time-delay relays, monitoring relays, and interface modules. Designed for DIN-rail mounting in control cabinets, these relays offer various functions such as on-delay, off-delay, star-delta timing, and voltage or current monitoring. Key technical parameters include coil voltages from 24 VDC to 240 VAC, contact ratings up to 10 A at 250 VAC, and multiple contact configurations (e.g., 2 CO, 4 CO). The series includes models with adjustable time ranges from 0.1 seconds to several hours, ensuring precise control in automation processes. The D4DL series typically features multifunctional timers, while the D4DS series focuses on star-delta switching. Monitoring relays like the D4DR provide overvoltage, undervoltage, and phase failure detection. All units comply with IEC/EN standards and offer IP20 protection for safe installation in electrical panels.
These relays are essential in industrial automation, process control, and building management systems. They are commonly installed in motor control centers (MCCs), programmable logic controller (PLC) cabinets, and distribution boards. Applications include conveyor systems, pump controls, HVAC units, and lighting automation. In manufacturing plants, they ensure sequential operations, protect equipment from electrical faults, and synchronize processes. The monitoring relays are critical for power quality management in data centers and critical infrastructure.
The category includes subcategories such as time-delay relays (D4DL, D4DS), monitoring relays (D4DR, D4DH), and interface relays (D4GL, D4NL). Key article codes follow a structured pattern: D4DL-24 (24 VAC/DC timer), D4DS-230 (230 VAC star-delta timer), D4DR-400 (400 VAC monitoring relay), and D4NH-24 (24 VDC interface relay). The code typically indicates the series (e.g., D4DL) followed by the voltage rating or function variant. Accessories like sockets and adapters are also available under related codes.
We offer express worldwide shipping and personalized technical support from our team of specialized engineers. Each product includes detailed documentation, real-time pricing, and compatibility guidance. Whether you need a single relay for a retrofit or bulk units for a new installation, we ensure fast delivery and expert assistance to optimize your control systems.
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