Reliable Power for Harsh Environments: Siemens 6AG1307-1KA02-7AA0 SIPLUS S7-300 PS 307
In harsh industrial environments, power supply failures often result from condensation, chemical exposure, or temperature extremes. The Siemens 6AG1307-1KA02-7AA0 SIPLUS S7-300 PS 307 10A stabilized power supply is engineered to overcome these challenges. Based on the standard SITOP design with conformal coating, it delivers reliable 24 V DC output even in -25°C to +70°C conditions. This module ensures your automation system receives clean, stable power where standard units may fail.
Technical Specifications Breakdown
The Siemens 6AG1307-1KA02-7AA0 power supply operates on 120/230 V AC input (85-132 V AC / 170-264 V AC) with automatic line frequency tolerance from 47 to 63 Hz. Its regulated 24 V DC output delivers a rated current of 10 A (derated to 7 A above 60°C) with a residual ripple of only 15 mV typical. Key parameters:
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Input current: 4.2 A at 120 V AC, 1.9 A at 230 V AC
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Efficiency: 90% at rated voltage and current
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Power loss: 27 W typical
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Overvoltage protection: Electronic cutoff at <28.8 V DC with automatic restart
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Short-circuit protection: Electronic trip with auto-restart
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Ambient temperature range: -25°C to +70°C (60°C for UL/ATEX/FM)
The unit features SELV output per EN 60950-1 and EN 50178 and meets EMC immunity EN 61000-6-2 and emission EN 55022 Class B. Equipment protection class I with protective conductor ensures operator safety.
Real-World Applications
The Siemens 6AG1307-1KA02-7AA0 excels in process plants, oil & gas facilities, and food processing lines where humidity, salt spray, or aggressive chemicals are present. Its conformal coating and extended temperature range prevent failure from condensation (tested per IEC 60068-2-38 up to 100% RH) and chemically active substances (class 3C4). For shipboard use, it withstands salt spray (severity degree 3) and mechanical stress (class 6S3). By eliminating power-related downtime, this module reduces total cost of ownership in demanding applications.
Maintenance & Reliability
To maximize the lifespan of the Siemens 6AG1307-1KA02-7AA0, inspect the unit every 6–12 months for dust accumulation on cooling fins in high-particulate environments. The conformal coating protects against condensation, but ensure all unused interface connectors remain covered with supplied plugs during operation. Avoid commissioning when condensation is present. The electronic short-circuit protection automatically restarts, reducing the need for manual intervention. In altitudes above 2,000 m, output voltage may drop to 75 V DC – consult the installation manual for proper derating.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6AG1307-1KA02-7AA0, verify your system’s input voltage (120/230 V AC) and ensure the output load does not exceed 10 A (7 A above 60°C). The module requires a protective conductor ground and fits into standard S7-300 racks. For parallel operation, switch two units in parallel via the output. At PLC Source PRO, we stock original Siemens modules with full traceability. Contact our technical team if you need help selecting the correct power supply for your application. For quick shipments, visit ubest101.myshopify.com.