Current monitoring relay Siemens
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General information
Ordercode YESSS
1551-5554 
Product code
3RR21421AA30
EAN code
4011209787254
Product group
Current monitoring relay
Brand
Siemens
Product specifications
Current measuring range
4 - 40 A
Min. adjustable off-delay time
0 s
Min. adjustable delay-on energization time
0 s
Three-phase under current possible
No
With detachable clamps
No
Single-phase under current possible
No
Single-phase overcurrent possible
No
Three-phase overcurrent possible
No
Single-phase hysteresis possible
No
Three-phase hysteresis possible
No
Contains function DC-voltage under current
No
Contains function DC-voltage overcurrent
No
Function DC-current hysteresis
No
Max. permitted delay-on energization time
60 s
Max. permitted off-delay time
30 s
External current transformer
No
Width
45 mm
Height
87 mm
Depth
91 mm
Product information