Product Overview
Technical Summary
| Product | SIMATIC S7-400 PS407 power supply |
|---|---|
| Input voltage | 120 V DC, 230 V DC, 120 V AC, and 230 V AC |
| Backplane-bus output | 5 V DC, max. 10 A; no base load required |
| 24 V DC output | Max. 1 A; idling-proof |
| Line frequency | Rated 50 Hz and 60 Hz; permissible range 47 Hz to 63 Hz |
| Mains/voltage failure stored energy time | 20 ms |
| Input current | 1 A at 120 V DC; 0.5 A at 230 V DC; 0.9 A at 120 V AC; 0.5 A at 230 V AC |
| Inrush current | Max. 63 A; Full width at half maximum 1 ms |
| Power loss | Typ. 20 W |
| Required slots | 2 |
| Equipment protection class | I, with protective conductor |
| Backup battery | Optional; 1x lithium AA; 3.6 V / 2.2 Ah |
Key Features
The 5 V DC backplane-bus output supports up to 10 A with no base load required.
Rated input values are 120 V DC, 230 V DC, 120 V AC, and 230 V AC.
The 24 V DC backplane-bus output supports up to 1 A and is idling-proof.
Rated line frequency is 50 Hz or 60 Hz, with a permissible range from 47 Hz to 63 Hz.
The power supply has short-circuit protection, primary/secondary potential separation, and equipment protection class I with protective conductor.
The unit requires 2 slots and has an optional 1x lithium AA backup battery rated at 3.6 V / 2.2 Ah.
Frequently Asked Questions
What is the exact product identity?
It is Siemens 6ES7407-0KA02-0AA0, a SIMATIC S7-400 PS407 power supply.
What input voltages does this power supply support?
Rated input values are 120 V DC, 230 V DC, 120 V AC, and 230 V AC.
What output capacity is available for the backplane bus?
The 5 V DC backplane-bus output is rated at a maximum of 10 A with no base load required; the 24 V DC output is rated at a maximum of 1 A and is idling-proof.
How many slots does the hardware configuration require?
The hardware configuration requires 2 slots.
