Import Ab 1771-Obn — Buy in Bulk from Supplier in China

The Ab 1771-obn is a discrete DC output module from the Allen-Bradley PLC-5 1771 series, designed to switch 24V DC loads in industrial automation applications. This module provides 32 sourcing (PNP) outputs arranged in four groups of eight, with each output capable of driving inductive or resistive loads directly. The 1771-OBN interfaces with the 1771 I/O chassis backplane and receives output state commands from the PLC-5 processor, updating all outputs in a single scan cycle. Output current rating per point and per group must be confirmed with N.S.E Automation Co., Ltd., as ratings vary by module revision and are critical for load compatibility calculations in panel design.

The module employs optoisolation between the backplane logic and field outputs, with typical isolation voltage of 1500V AC or greater standard for this product family. Output protection features include inductive kickback suppression, short-circuit protection with automatic current limiting, and overtemperature shutdown on some revisions. The 1771-OBN requires external 24V DC field power, supplied via the 1771-P4 or equivalent power distribution module or external supply. Response time from backplane command to output conduction is typically under 1 millisecond for resistive loads, with inductive load turn-off times extended by the internal suppression network. The module status indicators include individual LED per output group and module health status, with blown fuse indication where applicable to revision.

Primary buyers of the 1771-OBN include maintenance organisations supporting legacy PLC-5 installations, original equipment manufacturers updating existing machinery, and system integrators building replacement systems where PLC-5 compatibility is mandated by end-user specifications. The module is used in manufacturing lines, process skids, material handling systems, and packaging machinery where 24V DC solenoid valves, contactor coils, and indicator lamps require reliable switching. N.S.E Automation Co., Ltd. states a 12-month warranty and 1-2 working day lead time for this item, though buyers should confirm whether this applies to the specific unit and current stock level. The supplier indicates factory packing and immediate quotation availability via email enquiry.

N.S.E Automation Co., Ltd. is located in Huli District, Xiamen, Fujian Province, China, with postal code 361006. The supplier holds a harbor trust tier designation on the platform. Response rate is recorded at 0.00 percent with zero average response hours, indicating either recent listing establishment, limited platform activity, or insufficient transaction history for metric calculation. The company trades under the N.S.E Automation name and focuses on industrial automation components and replacement parts.

The supplier profile indicates a product range spanning vacuum technology (turbomolecular pumps, ion pumps), machine vision (In-Sight series), PLC components (including SLC500 and Siemens references), and various industrial electronic modules. The listing for the 1771-OBN emphasises lower support costs and ongoing availability of automation replacement parts as primary benefits. No information is provided about company size, years of operation, manufacturing capability, quality management system certification, or specific client portfolio. The stated lead time of 1-2 working days and 12-month warranty should be confirmed in writing for each order, as these terms may be conditional on stock availability and product condition. Buyers should independently verify business registration and request references for comparable transactions.