Siemens SIMATIC
Siemens SIMATIC S7-300 PLC Parts
Source CPUs, I/O modules, communication processors and accessories for S7-300 PLC systems. We supply replacement and new units for maintenance and machine builds. 155+ models available.
CPU Modules
S7-300 CPU 312, 313, 314, 315, 316 series processors in different memory and communication configurations.
Digital I/O
Digital input and output modules from 8-point to 32-point in different voltage and output types.
Analog I/O
Analog input and output modules for voltage, current, resistance and temperature measurement.
Popular Siemens S7-300 Models
These models are frequently requested for maintenance replacement and new machine projects.
| Model | Product | Category | Quote |
|---|---|---|---|
| 314c 2 dp | 314c 2 dp | PLC | View Details → |
| 6AG7314-1AG14-2AB0 | SIPLUS S7-300 CPU 314 Extended Temperature | PLC | View Details → |
| 6AG7317-2AK14-2AB0 | SIPLUS S7-300 CPU 317-2 DP Extended Temperature | PLC | View Details → |
| 6AV6 647-0AF11-3AX0 | SIMATIC HMI TP177B 4" TDP | HMI | View Details → |
| 6ES7 153-2BA00-0XB0 | ET 200M IM 153-2 HF Interface Module | PLC | View Details → |
| 6ES7 307-1BA00-0AA0 | PS 307 Power Supply 2A | PLC | View Details → |
| 6ES7 307-1BA00-0AA3 | PS 307 Power Supply 2A | PLC | View Details → |
| 6ES7 307-1EA00-0AA0 | PS 307 Power Supply 5A | PLC | View Details → |
| 6ES7 307-1KA00-0AA0 | PS 307 Power Supply 10A | PLC | View Details → |
| 6ES7 312-5BD01-0AB0 | CPU 312 | PLC | View Details → |
| 6ES7 312-5BE03-0AB0 | CPU 312C | PLC | View Details → |
| 6ES7 312-5BE03-0AB0 | SIMATIC S7-300 CPU 312C | PLC | View Details → |
| 6ES7 313-5BG03-0AB0 | CPU 313C | PLC | View Details → |
| 6ES7 313-6CE01-0AB0 | CPU 313C-2 DP | PLC | View Details → |
| 6ES7 313-6CF03-0AB0 | CPU 313C-2 PtP | PLC | View Details → |
| 6ES7 314-1AF11-0AB0 | SIMATIC S7-300 CPU 314 PLC Module | PLC | View Details → |
| 6ES7 314-6CG03-0AB0 | CPU 314C-2 DP | PLC | View Details → |
| 6ES7 314-6CG03-0AB0 | SIMATIC S7-300 CPU 314C-2 PN | PLC | View Details → |
| 6ES7 314-6CG04-0AB0 | CPU 314C-2 PN/DP | PLC | View Details → |
| 6ES7 314-6EH04-0AB0 | CPU 314C-2 PN/DP | PLC | View Details → |
| 6ES7 315-2AG10-0AB0 | CPU 315-2 DP | PLC | View Details → |
| 6ES7 315-2AG10-0AB0 | SIMATIC S7-300 CPU 315-2 DP | PLC | View Details → |
| 6ES7 315-2AG10-0AB5 | CPU 315-2 DP | PLC | View Details → |
| 6ES7 315-2AH14-0AB0 | CPU 315-2 DP | PLC | View Details → |
| 6ES7 315-2EH13-0AB0 | CPU 315-2 PN/DP | PLC | View Details → |
| 6ES7 315-6FF04-0AB0 | SIMATIC S7-300 CPU 315F-2 PN/DP | PLC | View Details → |
| 6ES7 315-6TH13-0AB0 | SIMATIC S7-300 CPU 315T-2 DP Technology CPU | PLC | View Details → |
| 6ES7 317-2AK14-0AB0 | CPU 317-2 DP | PLC | View Details → |
| 6ES7 317-2EJ10-0AB0 | CPU 317-2 PN/DP | PLC | View Details → |
| 6ES7 317-2EK14-0AB0 | SIMATIC S7-300 CPU 317-2 PN/DP | PLC | View Details → |
Showing 30 of 155 models. All models are available for quotation.
S7-300 Product Categories
Compact CPU modules from 312 to 316 with different memory and communication options.
Digital input and output modules in multiple point counts and voltage ranges.
Analog signal input and output for process measurement and control.
PROFINET, PROFIBUS, point-to-point and other communication processors.
Need a Siemens S7-300 Part?
Send us the exact 6ES7 part number. We check availability and reply with price, condition and lead time.
Get Quote →Popular S7-300 Models in Stock
SIPLUS S7-300 CPU 314 Extended Temperature
6AG7317-2AK14-2AB0SIPLUS S7-300 CPU 317-2 DP Extended Temperature
6ES7 312-5BE03-0AB0SIMATIC S7-300 CPU 312C
6ES7 313-6CE01-0AB0CPU 313C-2 DP
6ES7 314-1AF11-0AB0SIMATIC S7-300 CPU 314 PLC Module
6ES7 314-6CG03-0AB0SIMATIC S7-300 CPU 314C-2 PN
6ES7 314-6EH04-0AB0CPU 314C-2 PN/DP
6ES7 315-2AG10-0AB0CPU 315-2 DP
6ES7 315-2AG10-0AB0SIMATIC S7-300 CPU 315-2 DP
6ES7 315-6FF04-0AB0SIMATIC S7-300 CPU 315F-2 PN/DP
6ES7 315-6TH13-0AB0SIMATIC S7-300 CPU 315T-2 DP Technology CPU
6ES7 317-2EK14-0AB0SIMATIC S7-300 CPU 317-2 PN/DP
6ES7 319-3AL00-0AB0CPU 319-3 PN/DP
6ES7 321-1BH02-0AA0SM 321 Digital Input 16x24V DC
6ES7 321-1BH02-0AA0SIMATIC S7-300 SM 321 Digital Input 16ch
6ES7 321-1BL00-0AA0SIMATIC S7-300 SM 321 Digital Input 32ch
Every unit is tested before shipment. Request a quotation for the exact model you need.
Siemens S7-300 Buying FAQ
Can you supply discontinued S7-300 parts?
Yes. We specialize in legacy and discontinued automation parts. S7-300 CPUs, power supplies, I/O modules and communication processors are available from surplus stock or verified sourcing channels.
Are the S7-300 parts new or used?
We stock new surplus, refurbished and tested used units. Every unit is inspected, tested and photographed before shipment, and comes with our 12-month warranty.
How long does shipping take?
DHL, FedEx and UPS delivery typically takes 3 to 7 working days worldwide. For urgent breakdowns we can arrange express dispatch within 24 hours of confirmation.
Can you match a specific Siemens part number?
Send us the part number and we will confirm stock, compatibility, condition and price. Most S7-300 modules can be sourced from stock or verified suppliers.
Do you provide warranty on refurbished modules?
Yes, all parts carry a 12-month replacement warranty. We also provide test reports and photos before dispatch on request.