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The Siemens 6ES5955-3LF11 is a high-capacity power supply module engineered for the SIMATIC S5-135U, S5-150U, and S5-155U programmable controller systems, as well as the EU 185U expansion units. Designed for demanding industrial environments, this unit provides a stable 5 VDC output at 40 A, ensuring reliable operation for high-density I/O configurations and critical automation logic. Its robust design is built to withstand the rigors of heavy manufacturing, power generation, and chemical processing facilities, providing a consistent power foundation that helps prevent unplanned downtime.
| Model | 6ES5955-3LF11 |
| Manufacturer | Siemens |
| Input Voltage | 115 VAC / 230 VAC (switchable) |
| Output Capacity | 5 VDC / 40 A |
| Compatibility | SIMATIC S5-135U, S5-150U, S5-155U, EU 185U |
| Operating Temperature | 0 to 60 deg C |
No, the module provides the interface for the external battery (CA-6EW1000-7AA), which must be sourced separately and installed in the designated external holder.
No, this specific power supply is designed for the larger S5-135U, S5-150U, and S5-155U controller series. Please verify your controller model before installation.