Siemens

Rabwellplc stocks Siemens automation hardware across the full SIMATIC and SINAMICS portfolio for North American buyers who need replacement modules, project spares, and end-of-life parts that local distributors no longer carry. Siemens dominates discrete and process control in food, beverage, automotive stamping, water treatment, and oil and gas applications, and a single retrofit usually pulls in CPUs, I/O cards, signal modules, drives, HMIs, and ProfiNet hardware from several SIMATIC families at once. Our inventory is organised so a maintenance lead, panel builder, or systems integrator can pull the exact 6ES7, 6AV6, 6SE7, 6SN1, or 6EP1 part number against a bill of materials in one session.

Product Lines We Stock

SIMATIC S7-1500 is our deepest line. CPU SKUs include 1511-1 PN (6ES7511-1AK02), 1512C-1 PN (6ES7512-1CK01), 1513-1 PN, 1515-2 PN, 1516-3 PN/DP, 1517-3 PN/DP, 1518-4 PN/DP, plus the F-CPU safety variants (1513F, 1515F, 1516F, 1517F) and the T motion variants (1511T, 1515T, 1516T). Signal modules cover digital input 521-1BL, 521-1BH, 521-1FH; digital output 522-1BF, 522-1BH, 522-1BL, 522-5HH; analog input 531-7KF, 531-7NF, 531-7PF; analog output 532-5ND. Mounting and display spares (590-0AA U-connector, 590-1AB60 rail, 591-1BA01 display) sit alongside.

SIMATIC ET 200SP and ET 200MP distributed I/O, including interface modules 155-5AA00 (PROFINET), 155-5BA00, 194-4AP00 (PROFIBUS), and ET 200SP CPUs (1510SP, 1512SP, 1512SP F-1).

SIMATIC S7-300, S7-200 SMART, and LOGO! for legacy panel rebuilds.

SIMATIC HMI: KTP400/KTP600/KTP1000 Basic and Comfort, TP/OP 177, Mobile Panel 177/277 (with 6XV1440 cables), SMART 700/1000 IE, Comfort Panel, plus replacement glass digitisers and key membranes.

Drives and motion: SINAMICS V20/G120/S120, MICROMASTER 4 (legacy), SIMOVERT MASTERDRIVES VC/MC (6SE70 series), SIMODRIVE 611-A and 611-D control units (6SN1118 series), SINUMERIK 802D/810D/840D CNC parts.

Industrial networking: SCALANCE X switches, CP 343/443 communication processors, IE/PB Link gateways.

Power supplies and SIPLUS extreme: SITOP PSU100/PSU300, S7-1500 system power 505-0KA, 505-0RB, 507-0RA, plus SIPLUS-rated harsh-environment variants.

How to Choose

Start from the application class, not the part number. Discrete machine control under 1024 I/O typically maps to S7-1200 or S7-1500 1511/1512; process and large discrete (1024–32k I/O, redundancy, motion) maps to 1516, 1517, 1518 or the R/H redundant CPUs; safety-rated cells need an F-CPU; coordinated motion and gantry needs a T-CPU.

Then check communication protocol against the existing plant: PROFINET-only sites accept PN-only CPUs (cheaper); mixed legacy plants need PN/DP CPUs (1516-3, 1517-3, 1518-4). PROFIBUS-DP-only retrofits should still pull PN/DP variants for forward compatibility.

For drives, match horsepower, voltage, and control method (V/Hz vs. vector vs. servo): MICROMASTER and SINAMICS V20 cover constant-torque pumps and fans; G120 and ACS-style general purpose; S120 multi-axis servo; MASTERDRIVES is legacy retrofit territory and is often easier to replace in kind than to migrate.

For HMI, panel size and TIA Portal version compatibility drive selection. KTP Basic Panels need WinCC Basic; Comfort Panels need WinCC Advanced; older OP/TP 177 projects may still be in WinCC flexible.

For spares, always cross-check the firmware-relevant suffix (e.g., 6ES7515-2AM01 vs. -2AM02): a project compiled for hardware version V2.x will refuse to download to a V1.x CPU, and Siemens publishes hardware revision tables in the SIMATIC manual collection.

Buying from Rabwellplc

Stocked SIMATIC and SINAMICS items typically ship from our US warehouse in 1–3 business days; project quantities and discontinued line items (MASTERDRIVES, SIMODRIVE 611, S5) are sourced through our authorised secondary channel and ship in 5–15 business days. Every part is inspected, function-tested where the SKU permits (CPUs, drives, HMIs are powered up), and ships with a 12-month warranty. We accept POs from US, Canadian, and Mexican accounts and ship internationally on customer-arranged DHL/FedEx accounts. For project bills of materials with 10+ line items, request a project quote and we will confirm availability, lead time, and tier pricing per line.

Frequently Asked Questions

Q: What is your typical lead time for Siemens parts?

A: Stocked S7-1500 CPUs, ET 200SP/MP modules, common SINAMICS frame sizes, and KTP/Comfort HMIs ship in 1–3 business days from our US warehouse. Discontinued lines (S5, MASTERDRIVES, SIMODRIVE 611, MICROMASTER 4, original SIMATIC NET) and rare hardware revisions are sourced to order in 5–15 business days. We confirm exact ETA on the quote before you commit.

Q: Are these OEM original Siemens, refurbished, or compatible parts?

A: All SIMATIC, SINAMICS, SCALANCE, and SITOP units we sell are original Siemens-manufactured product. We carry both factory-sealed new stock and tested surplus depending on availability for the SKU, and the listing condition is stated per item. We do not sell pattern, clone, or relabelled compatible parts on this collection.

Q: What warranty applies?

A: Standard warranty is 12 months from invoice date for new and tested surplus units, covering manufacturing defects and DOA replacements. Extended 24-month coverage is available on project orders by request. Returns require an RMA number and must be initiated within 30 days for stock items.

Q: Can you cross-reference legacy parts (S5, S7-200, MASTERDRIVES, original 6SE) to current SKUs?

A: Yes. Send the legacy 6ES5, 6SE12, 6SN1, or 6SE70 part number plus the application context (rated current, voltage, communication protocol, brake chopper, safety rating) and we will return the active replacement plus any wiring or programming differences worth flagging. Form-fit replacement is rarely 1:1 for drives older than SINAMICS, so retrofit plates and parameter set conversions may be needed.

Q: Are projects compiled in older TIA Portal versions still loadable on the CPUs you sell?

A: TIA Portal projects are forward-compatible (older project on newer firmware works) within the same hardware version family. Cross-version migration (e.g., a Step 7 Classic S7-300 project to S7-1500) requires the TIA Portal Migration Tool. We can confirm whether a CPU's firmware level matches your archived project before shipment if you provide the project's archive screenshot.

Q: Do you provide datasheets and manuals?

A: Every Siemens SKU we list links to the manufacturer datasheet and SIMATIC manual. We also forward the original Siemens Industry Online Support certificates for new sealed units and the inspection/test report for tested surplus on request.

Q: Do you offer project pricing for OEM panel builders?

A: Yes. For BOMs with 10+ line items or repeat-order panel builders we apply tiered project pricing and reserve allocation to keep your build schedule predictable. Email the BOM to sales@rabwellplc.com or request a quote from any product page.

Q: Can you ship to job sites in Canada, Mexico, or overseas?

A: We ship daily to the US lower 48, Canada, and Mexico via FedEx and UPS. International orders ship on customer-arranged DHL or FedEx accounts; we handle export documentation including commercial invoice, packing list, and ECCN classification where required.