PLC Systems — New, Reconditioned & Obsolete
Apex sources PLC systems and CPU modules for maintenance teams, system integrators, and procurement departments across Singapore, Southeast Asia and Australia — including discontinued and obsolete controllers that manufacturers no longer produce, new and reconditioned. If your PLC platform is approaching end-of-life, we can help with replacement planning to avoid unplanned downtime, sourcing a direct replacement or a compatible spare. We also support component lifecycle management for your PLC fleet, flagging obsolescence risk before it turns into unplanned downtime. Sourcing drives or inverters for the same panel? Our Drives & Inverters page covers Siemens SINAMICS, Schneider Altivar and Omron drives across new, reconditioned and obsolete stock. Also see our Breakers & Contactors page and our Sensors & Relays page for new, reconditioned and obsolete protection, switching and sensing parts that support the same PLC panels. For the operator and motion side of the same system, see our HMIs & Displays page, Servo Drives & Motors page and CNC Systems page.
Siemens SIMATIC
S7-300, S7-1200, and S7-1500 series controllers, including obsolete CPU modules no longer sold new by Siemens.
View Siemens partsOmron CJ and CP Series
CJ2, CJ1, and CP1 series programmable logic controllers, including obsolete CJ1 units still in active service on legacy production lines.
View Omron partsMitsubishi MELSEC
Q series universal CPUs for multi-CPU systems and large-scale automation control tasks, sourced new and as tested obsolete stock.
Other PLC Brands
Allen-Bradley, GE Fanuc, Yaskawa and other PLC platforms sourced on request, including [PLACEHOLDER] part numbers and legacy controller families.
Can't find your exact PLC part number? Request a quote and we'll search our supplier network — obsolete and discontinued items included.