Datasheet

● maximum
26.4V
Overvoltage category / acc. to IEC 61010-1 III
Supply voltage
Supply voltage frequency
● minimum
0/50Hz
● maximum
60Hz
Type of voltage / of the supply voltage AC/DC
Protection class
Protection class IP IP20
Switching capacity
Switching capacity current / at AC / at 250 V / Rated
value
16A
Dissipation
Power loss [W] / for rated value of the current / at AC
/ in hot operating state / per pole
1W
Operating voltage / at AC / rated value 250V
Product details
Product feature
● external switch input
No
● floating switching contact
Yes
Product function
Product function
● 60 min time program
Yes
● Astro program
No
● Automatic daylight-saving adjustment
Yes
● Operating hours counter
Yes
● direct operation
Yes
● Holiday time program
Yes
● Impulse program
Yes
● annual time program
No
● Switching preselection
Yes
● 24-hour time program
Yes
● Text guidance in display
Yes
● Weekly time program
Yes
● Random time program
Yes
● Cyclical time program
Yes
Number
Number of terminals / with cross-head screw 1
Number of channels 1
Number of memory slots 56
7LF4521-2 Subject to change without notice
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01/04/2019 © Copyright Siemens