LADR4 – Schneider Time Delay Auxiliary Contact Block, 1 NO 1 NC, Off-Delay 10–180 s, 10 A, Front-Mount (TeSys Deca)

Product Description The Schneider LADR4 Time Delay Auxiliary Contact Block (TeSys Deca) is designed to enhance the control and flexibility of motor starter circuits. This accessory adds a programmable off-delay function to standard contactors, making it possible to delay the disconnection of auxiliary circuits for precise operational sequencing. With 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration, the block integrates seamlessly into automation systems that require staggered operations or controlled stopping sequences. Engineered for industrial robustness, the LADR4 offers an adjustable off-delay time range of 10 to 180 seconds, allowing engineers to fine-tune motor control timing for various applications. Rated at 10 A for up to 690 V AC, it is suitable for use in heavy-duty electrical systems and ensures both durability and consistent performance. This module is front-mounted on TeSys D or F contactors using screw clamp terminals, which guarantee secure wiring and quick installation. The compact design makes it suitable for control panels where space optimization is critical. It also complies with international safety and performance standards, ensuring reliable operation in industrial automation, HVAC systems, conveyor systems, and pump control stations. At PowerMark Solution, we deliver genuine Schneider auxiliary contact blocks like the LADR4—trusted for building safe, reliable, and efficient motor starter systems in both manufacturing and process industries. Technical Specifications Specification Details Brand Schneider Electric (TeSys Deca series) Model Number LADR4 Contact Configuration 1 NO 1 NC auxiliary contacts Function Type Time Delay Off-Delay Adjustable Delay Range 10 – 180 seconds Rated Current 10 A Rated Operational Voltage Up to 690 V AC Mounting Type Front-mount with screw clamp terminals Compatible Devices Designed for TeSys D & F contactors (e.g., LC1D range) Application Areas Motor starters, automation panels, conveyor belts, HVAC, pumping systems FAQs Q1: What is the function of the LADR4?A: The LADR4 adds an off-delay timing function to contactor auxiliary circuits, delaying disconnection for smoother control. Q2: What timing range does it provide?A: Adjustable from 10 seconds to 180 seconds, allowing flexibility for different industrial processes. Q3: How many auxiliary contacts does it include?A: It provides 1 Normally Open (NO) and 1 Normally Closed (NC) contacts. Q4: Can it handle industrial loads?A: Yes, rated at 10 A up to 690 V AC, it is suitable for industrial-grade applications. Q5: How is it installed?A: The block front-mounts on TeSys D or F contactors using screw clamp terminals. Q6: Where is it commonly used?A: Widely applied in motor starters, automated conveyors, HVAC systems, and industrial pump controls. Q7: Why use an off-delay auxiliary block?A: It helps implement controlled stopping, safety interlocks, and operational sequencing in automation.