Siemens Argus 7SR21 - Binary (Digital) Outputs

7SR21 & 7SR22 Performance Specification
Unrestricted © 2013 Siemens Protection Devices Limited Page 13 of 68
1.2.4 Binary (Digital) Outputs
Contact rating to IEC 60255-0-2
Attribute Value
Carry continuously 5 A AC or DC
Make and carry
(L/R £ 40 ms and V £ 300 V)
for 0.5 s 20 A AC or DC
for 0.2 s 30 A AC or DC
Break
( £ 5 A and £ 300 V)
AC resistive 1250 VA
AC inductive
250 VA at p.f. £ 0.4
DC resistive 75 W
DC inductive
30 W at L/R £ 40ms
50 W at L/R £ 10 ms
Contact Operate / Release Time 7 ms / 3 ms
Minimum number of operations 1000 at maximum load
Minimum recommended load 0.5 W at minimum of 10 mA or 5 V