Allen-Bradley 852S-NSB Time Delay Relay Module

Allen-Bradley 852S-NSB Solid State Time Delay Relay is a compact timing module that mounts on Allen-Bradley Type N relays to deliver precise on-delay timing in control circuits and automation panels. The NSB variant provides a maximum timing interval of 60 seconds and is documented as part of the 852S family, known for on-delay operation with easy conversion to off-delay as described in Rockwell’s guidance for mounting on Type N relays. It carries a load rating of up to 3 A maximum and a maximum load voltage of 300 V, enabling the timing output to drive auxiliary devices within safe operating limits. Typical applications include sequencing and interlock timing in control cabinets, where a fixed delay after energization coordinates downstream devices or safety interlocks in industrial automation.