Product Introduction
Our Siemens-compatible electric components cover a full range of industrial control categories: PLC communication modules (S7-300 SM 321, ET200S I/O modules), control relays, circuit breakers, process transmitters (SITRANS LR300 radar level, MAG6000 magnetic flow), industrial motors, cooling fans, fuses, and VFD accessory kits. Each part is manufactured to match original Siemens dimensional, electrical, and performance specifications, cross-referencing OEM part numbers (6ES7, 3VL, 3RQ, 7ME series) for direct plug-and-play installation, with no custom wiring or modification required for field replacement.
Functional Capabilities
- PLC & Communication Control: ET200S and S7-300 digital input/output modules enable reliable signal transmission, optically isolated inputs to eliminate interference, and safe discrete I/O control for industrial machinery and conveyors.
- Circuit Protection & Control: Siemens circuit breakers, control relays, and cartridge fuses deliver precise overcurrent, short-circuit, and residual current protection, safeguarding industrial equipment from electrical damage.
- Process Monitoring & Measurement: SITRANS radar level and magnetic flow transmitters provide accurate, real-time monitoring of liquids, slurries, and flow rates, with 4-20mA and PROFIBUS output for seamless system integration.
- Industrial Power & Cooling: High-efficiency AC induction motors and IP55-rated cooling fans ensure reliable power delivery and thermal management for heavy-duty industrial drives and equipment.
- Safety & Interface Compliance: Safety-rated relays and I/O terminals meet EN 954-1 and IEC 61508 standards, supporting safe machine shutdown and industrial control system compliance.
Structural Design Features
- OEM Exact Compatibility: Perfect form-fit-function matching with Siemens part numbers, ensuring direct replacement and eliminating installation errors.
- Industrial-Grade Durability: IP55/IP67 enclosure ratings, wide temperature tolerance (-25°C to 70°C), and optically isolated circuitry to resist dust, moisture, and electrical interference.
- Modular Plug-and-Play Design: DIN-rail mountable modules, plug-in terminals, and compact form factors for quick field installation and maintenance.
- High-Performance Electrical Ratings: High interrupt capacity (up to 120kA), wide voltage input ranges, and safety-certified components for heavy industrial load handling.
Applicable Operating Conditions
These Siemens electric modules are validated for heavy industrial environments, including:
- Siemens S7-300 PLC and ET200S distributed I/O control systems
- Medium-voltage VFD drives, conveyor systems, and material reclaimers/trippers
- Industrial process monitoring (liquid level, flow rate) for storage and processing vessels
- Continuous 24/7 industrial plant operations with high electrical load demands
- Harsh plant conditions with dust, temperature fluctuations, and electrical noise
Maintenance & Service Best Practices
- Inspect PLC communication modules (6ES7 series) every 6 months for loose connections, corrosion, or signal interference; clean terminal blocks and replace faulty modules to maintain data transmission stability.
- Test circuit breakers and control relays quarterly for proper trip functionality, verifying voltage/current ratings match system requirements to prevent overload failures.
- Calibrate SITRANS level and flow transmitters annually to ensure measurement accuracy, checking antenna and sensor components for debris buildup.
- Clean industrial cooling fans and motor vents every 3 months to remove dust buildup, maintaining optimal thermal performance and preventing overheating.
- Replace cartridge fuses only with equivalent Siemens-rated units, avoiding mismatched current/potential ratings to preserve circuit protection integrity.
- Store unused electronic modules in anti-static packaging to prevent electrostatic discharge damage prior to installation.
- We supply the following spare parts:
| S. NO | ITEM NO | DESCRIPTION | UOM |
| 1 | 1000093073 | RELAY, CONTROL; CONTACT ARRANGEMENT: 1NO-1NC, COIL VOLTAGE: 115 VAC/DC, TERMINAL TYPE: PLUG-IN, TYPE: AUXILIARY; PN:3RQ3118-1AE00, MFR: SIEMENS; S/N:F-0066051/7000, DRAWING: MD-502-5120-EL-DSD, ORDER NO: 4500094777 | Each |
| 2 | 1000099075 | MODULE, COMMUNICATION; DIMENSIONS: WD 40 X HT 125 X DP 120 MM, TYPE: (32) DIGITAL INPUT, INPUT: 24 VDC 7 MA VDC; MFR: SIEMENS; MODEL:6ES7 321-1BL00-0AA0, S7-300, SM 321, PIN QUANTITY: 40; OPTICALLY ISOLATED; PLANT: MH-1 RECLAIMER / TRIPPER | Each |
| 3 | 1000092860 | BREAKER, CIRCUIT; POTENTIAL: 415 V, ELECTRICAL POLE QUANTITY: 3P, CURRENT: 250 A, INTERRUPT CAPACITY: 100 KA, FRAME: VL250L, TEMPERATURE RANGE: -25 TO 70 DEG C, WIDTH: 106.5 MM, HEIGHT: 185.5 MM; PN:3VL3725-3DK36-0AD1, MFR: SIEMENS; S/N:F-0066051/7000, DWG: MD-502-5120-EL-DSD REV:0, ORDER: 4500094777 | Each |
| 4 | 1000128129 | MODULE, COMMUNICATION; TYPE: DIGITAL INPUT/OUTPUT, INPUT: 110-240 VAC/DC, SOFTWARE: SIMOCODE PRO, STANDARD: CE; PN:3UF7300-1AU00-0, MFR: SIEMENS; S/N:F-0066051/7000, NO OF INPUTS: 4, NO OF OUTPUTS: 2, MPC DATASHEET NO: MD-502-5120-EL-DSD; ORDER: 4500094777 | Each |
| 5 | 1000134223 | TRANSMITTER, LEVEL; CONNECTION SIZE: NPT 2 X 1/2 IN, TYPE: RADAR, RANGE: 0.4-20 M, OUTPUT: 4-20 MA, SUPPLY: 24-230 VDC, CONNECTION TYPE: FLANGED FF, BODY MATERIAL: AL EPOXY COATED, MOUNTING FACILITY: EYE, STANDARD: CSA; MFR: SIEMENS; MODEL:SITRANSLR300, MFR:SIEMENS, WITH ROD ANTENNA (4) WIRE, FREQUENCY: 6 GHZ PULSE; F/CONTINUOUS MONITORING OF LIQUIDS AND SLURRIES IN STORAGE AND PROCESS VESSELS INCLUDING HIGH TEMPERATURE AND PRESSURE | Each |
| 6 | 1000139948 | TRANSMITTER, FLOW; TYPE: MAGNETIC, RANGE: 0-2800 M, SUPPLY: 115-230 VAC; PN:7ME6920-1AA10-1AA0, MFR: SIEMENS; MODEL:MAG6000, BRAND: SITRANS FM MAGFLO; ENCLOSURE RATING: IP67, OUTPUT SIGNAL: PROFIBUS CALIBRATED; FREQ: 60 HZ, WITH ADD ON PROFIBUS PA MODULE, MODEL: FDK-058U0236 | Each |
| 7 | 1000733386 | FAN, ELECTRIC; TYPE: COOLING, POTENTIAL: 460 V, SPEED: 900 RPM, ENCLOSURE RATING: IP55, INSULATION CLASS: F, TEMPERATURE CLASS: B, POWER: 103.68 KW, PHASE QUANTITY: 3PH; MODEL:1LG4318 8AB60-Z, MFR:SIEMENS | Each |
| 8 | 1000733385 | MOTOR, ELECTRIC; FRAME: 315L, TYPE: AC INDUCTION, POWER: 103.68 KW, POTENTIAL: 460 V, FREQUENCY: 60 HZ, SPEED: 900 RPM, TEMPERATURE CLASS: B, DUTY RATING: S1, ENCLOSURE RATING: IP55, INSULATION CLASS: F, PHASE QUANTITY: 3PH; MODEL:1LG4318 8AB60-Z, MFR:SIEMENS | Each |
| 9 | 1000134462 | FUSE, CARTRIDGE; CURRENT: 160 A, POTENTIAL: 400 V, INTERRUPT CAPACITY: 120 KA, TYPE: NH, STANDARD: CE, COMMERCIAL SIZE: 000; PN:550083, MFR: SIEMENS, MFR: FLSMIDTH; MODEL:3NA3836-8 | Each |
| 10 | 1000067688 | RELAY, CONTROL; CONTACT RATING: 0.03-30 A, COIL VOLTAGE: 440-525 VAC, TERMINAL TYPE: SCREW/SPRING CLAMP, MOUNTING FACILITY: DIN RAIL, TYPE: RESIDUAL CURRENT; MODEL:RH99M, MFR:SIEMENS, WITH SEPARATE TOROID, TIME DELAY: 0-4.5 S | Each |
| 11 | 1000072431 | BREAKER, CIRCUIT; POTENTIAL: 380 VAC, ELECTRICAL POLE QUANTITY: 3P, CURRENT: 4.5-6.3 A, INTERRUPT CAPACITY: 100 KA, MOUNTING FACILITY: DIN RAIL, WIDTH: 45 MM, LENGTH: 93 MM; PN:3RV1011-1GA10, MFR: SIEMENS, MFR: PHB; TAG:3KM0-Y40, DWG: MD-502-3KM0-EL-DSD-0801-5052 REV:0 | Each |
| 12 | 1000132797 | MODULE, COMMUNICATION; DIMENSIONS: WD 15 X HT 81 X DP 52 MM, TYPE: (2) DIGITAL OUTPUT, OUTPUT: 24 VDC 5 A; PN:6ES7-132-4HB01-0AB0, MFR: SIEMENS; F/RELAY | Each |
| 13 | 1000094838 | MODULE, COMMUNICATION; TYPE: (4/8) DIGITAL INPUT/ SIMATIC DP, ELECTRONIC, INPUT: 24 VDC; MODEL:6ES7138-4FA05-0AB0, MFR:SIEMENS, REF:ET200S, DRAWING: MD-502-3P00-ME-LST-0001-0508-C01 | Each |
| 14 | 1000130714 | MODULE, COMMUNICATION; TYPE: 4 DIGITAL OUTPUT, SAFETY, OUTPUT: 24 VDC/ 2A, STANDARD: CE; PN:6ES7138-4FB04-0AB0, MFR: SIEMENS, PN:6ES7-138-4BF02-0AB0(OLD) | Each |
| 15 | 1000094835 | MODULE, COMMUNICATION; TYPE: (8) DIGITAL INPUT, INPUT: 24 VDC; PN:6ES7-131-4BF00-0AA0, MFR: SIEMENS | Each |
| 16 | 1000129033 | MODULE, COMMUNICATION; DIMENSIONS: WD 45 X HT 119.5 X DP 75 MM, TYPE: INTERFACE, OUTPUT: 12 MBPS; PN: CP341, MFR: SIEMENS; MODEL: 6ES7 151-1BA02-0AB0, REF: RS422/485, DWG: MD-502-3P00-ME-LST-0001-0508-C01; PLANT: MH2 ALL CONVEYORS | Each |
| 17 | 1000094836 | MODULE, COMMUNICATION; TYPE: (8) DIGITAL OUTPUT, INPUT: 24 VDC 0.5 A; PN:6ES7-132-4BF00-0AA0, MFR: SIEMENS | Each |
| 18 | 1000094834 | MODULE, COMMUNICATION; TYPE: (4) CHANEL DIGITAL INPUT, INPUT: 24 VDC; PN:6ES7-131-4BD01-0AA0, MFR: SIEMENS | Each |
| 19 | 1000094840 | MODULE; TYPE: I/O TERMINAL, DIMENSIONS: WD 15 X HT 157 X DP 43 MM; PN:6ES7-193-4CA50-0AA0, MFR: SIEMENS | Each |
| 20 | 1000094839 | RELAY, CONTROL; CONTACT RATING: 5 A, CONTACT ARRANGEMENT: 2NO, APPLICATION: MODULE(TYPE: 1 DIGITAL OUTPUT), TYPE: SAFETY, STANDARD: EN 954-1, IEC 61508; PN: ET200S, MFR: SIEMENS, EQ MODEL NO: 6ES7 138-4FR00-0AA0; DWG: MD-502-3P00-ME-LST-0001-0508-C01 | Each |
| 21 | 1000462760 | FAN, ELECTRIC; TYPE: COOLING, APPLICATION: SILENCING HOOD FAN MAIN BLOWER MOTOR; OEM: SIEMENS; EQ MODEL:1LA709641110-Z, EQ S/N:E0807/5145696 01 011 | Each |
| 22 | 1000710103 | KIT; TYPE: BLOWER CAGE SYSTEM, SPECIFICATION: 26 IN, RED; PN:A5E41693816/001, MFR: SIEMENS ; REF:A5E46948327 | Each |
Field Failure Repair Case Studies
Case 1: ET200S Digital Input Module Failure
A conveyor control system experienced signal loss due to a faulty 6ES7-131-4BF00-0AA0 digital input module, causing unplanned downtime. Replacing the defective module with an OEM-equivalent unit restored full I/O signal communication, resuming normal conveyor operation within 1 hour.
Case 2: Circuit Breaker Overload Trip Failure
A 3VL3725-3DK36-0AD1 circuit breaker failed to trip during an overcurrent event, risking equipment damage. Installing a new OEM-spec breaker with proper 250A/415V ratings restored reliable circuit protection, preventing costly motor burnout.
Case 3: SITRANS LR300 Level Transmitter Malfunction
A radar level transmitter provided erratic liquid level readings due to signal interference and component degradation. Replacing the faulty unit with a new SITRANS LR300 transmitter restored accurate continuous monitoring, eliminating process measurement errors.
Frequently Asked Questions (FAQ)
| Question | Answer |
| Are these modules compatible with Siemens S7-300 and ET200S systems? | Yes, all communication modules are precision-designed to directly integrate with Siemens S7-300 PLCs and ET200S distributed I/O setups, matching OEM pinouts and communication protocols. |
| What industrial applications do these Siemens components support? | These parts are used for PLC control, circuit protection, process monitoring (level/flow), industrial motor operation, and VFD cooling in conveyors, reclaimers, and processing vessels. |
| How do I confirm the correct replacement part for my Siemens equipment? | Cross-reference your original Siemens part number (e.g., 6ES7, 3VL, 3RQ series) or equipment model with the catalog listings to ensure exact fit and electrical compatibility. |
Procurement Guidance
For industrial operators focused on maximizing control system uptime, maintaining equipment compliance, and sourcing reliable Siemens-compatible electric components, these OEM-matched modules and parts are the definitive sourcing solution. This catalog provides full transparency on part descriptions, OEM part numbers, electrical ratings, and application details, serving as your trusted benchmark for compliant, cost-effective procurement. Whether you need emergency replacements for PLC module failures, routine circuit protection components, process instrumentation, or industrial motor/ fan parts, each component is engineered to resolve critical electrical control issues and deliver long-term durability in heavy industrial environments. Submit your detailed parts inquiry with specific Siemens part numbers, required quantities, and equipment application details to secure high-quality, precision-matched components tailored to your industrial control needs.
