Siemens SITOP SEL1200 - Efficiency and Power Loss; Protection and Monitoring Features

Technical data
6.3 Efficiency
SITOP SEL1200-1400
40 Manual, 06.2019, A5E46496083-1-76
6.3 Efficiency
6EP4438-7FB00-3DX0
6EP4438-7EB00-3DX0
Efficiency at U
out rated
, I
out rated
, approx.
99 %
Power loss at U
out rated
, I
out rated
, approx.
15 W
6.4 Protection and monitoring
6EP4438-7FB00-3DX0
6EP4438-7EB00-3DX0
Device protection
Internal fuse 10 A for each output (not accessible)
Operating display One LED per output: LED green for "Output switched on", LED orange flashing
for "Output manually switched off", LED red for "Output switched off due to
overload or overvoltage", all LEDs flashing red for "Device overload (total max.
output current exceeded)", red running light for "Device overtemperature".
More detailed information is provided in Chapter "Status displays and signaling
(Page 13)".
Signaling Group signaling contact (NO contact),
contact rating: 24 V AC/0.1 A; 30 V DC/0.1 A
6.5 MTBF
6EP4438-7FB00-3DX0
6EP4438-7EB00-3DX0
Mean Time Between Failures > 500,000 hours at 40 °C, rated load,
24 hour operation
> 300,000 hours at 40 °C, rated load,
24 hour operation