Import 6es72881sr400aa0 — Buy in wholesale FOB from Supplier in China

The 6es72881sr400aa0 is a CPU SR40 standard relay output module within the Siemens SIMATIC S7-200 SMART portfolio, offered by Zhonghaide(Fujian)industrial Equipment Co., Ltd. from their Fuzhou, Fujian Province location. This compact controller integrates a 24V DC power supply, 24 digital inputs, and 16 relay outputs, with integrated RS485 communication port and support for additional expansion modules. The unit handles basic to moderate automation tasks in machinery, materials handling, and small process installations. Zhonghaide lists this as compatible with existing automation infrastructure, positioning it for both greenfield projects and legacy system upgrades.

The SR40 designation indicates relay rather than transistor outputs, providing 2A switching capacity per point for resistive loads and electrical isolation from the internal logic circuitry. Standard specifications for the S7-200 SMART SR40 include a program memory capacity of 24 KB and data memory of 12 KB, with typical execution speeds of 0.15 microseconds per Boolean operation. The relay output type trades switching speed for robustness and voltage flexibility, accepting load voltages from 5V DC to 250V AC. Buyers should confirm with Zhonghaide whether the specific unit carries the latest hardware revision, as Siemens has released multiple production batches of the S7-200 SMART series with incremental improvements to communication reliability and terminal durability.

Target applications include packaging machinery, conveyor systems, HVAC control, pump stations, and building automation where discrete control and moderate I/O counts suffice. The unit programs via STEP 7-Micro/WIN SMART software, which requires Windows environment and USB or Ethernet connection. OEM machine builders and system integrators in Southeast Asian and Middle Eastern markets represent typical buyers for this controller class. Pricing, minimum order quantities, and exact lead times are not available in the source data and require direct negotiation with Zhonghaide. Buyers should also confirm whether technical support, programming assistance, or spare part availability is included in the offering.

Zhonghaide(Fujian)industrial Equipment Co., Ltd. is located at Wulongjiangdadao Road, Glorious Wealth Center Block B, eighth floor, in Fuzhou's Changle district, Fujian Province, postal code 350108. The supplier holds a harbor trust tier with a response rate of 0.00% and no recorded average response hours, indicating either limited platform activity or a recently registered account. Their physical address in a commercial office building rather than an industrial zone suggests a trading or distribution model rather than manufacturing operations. Buyers should conduct due diligence on company registration, capitalisation, and trading history through direct enquiry or third-party verification services.

The supplier's profile indicates focus on industrial automation and control system components, though no specific brand authorisations, distributorship agreements, or factory audit results are disclosed. No employee count, annual turnover, year of establishment, or client reference list is provided in the available data. The listing mentions ISO and CE certifications without specifying certificate numbers, issuing bodies, or scope of accreditation; buyers should request copies of current certificates and verify their validity independently. Zhonghaide does not state whether they maintain Siemens-authorised dealer status, which affects warranty terms and access to factory technical support for end users.