Panasonic is part of a large worldwide groupselling relays and associated switching products under different brand names in different territories.The conditions of use in some territories may differ from those customary in Europe. In particular there are often major differences in regard to national and international specifications, such as UL, CSA, VDE, SEV, EVE, SEMKO, etc. Thus, when considering contact loads as stated in this catalogue (e.g. 10 A, 30 VDC for the SP relay) its hould be understood that these values are not necessarily an absolute maximum but tested ratings. Mostly the stated value has been tested for a certain life expectancy as stated by the manufacturer or the respective test house. Thus, under different conditions, the stated “maximum” may, in practice, be safely exceeded.
Stateofothercontacts
1 4
1 >0.020inch. easy make weld detection circuits and safety circuits the design ensure safety even contacts weld. contact welds. 2and4)
maintainagapofgreaterthan0.020inch
Emptycells:eitherclosedoropen
For Cautions for Use, see Relay Technical Information (page 610).020inch.
>0.
Thetwoform“b”contact(No.5mm.5 >0.5
Welded
terminal
No.5 >0. 0.5mm.5 >0. contact welds
Eachofthethreeform“a”contacts(No.
F d
W r
c .
C e
T h
t e
f . 1or3)maintainsagapof
greaterthan0.
572 61404 sf2d: 180413D
.5
4 >0.
Ifthecontactschangestateowingtoloading/breaking
itisnecessarytochecktheactual loading.
Example: the No.5mm.5
3 >0.
2 >0.5 >0.5
*Contact gapsareshownattheinitial state.
2 Form Form type
F d
I a
m .
Example: the No.SF2D
THE OPERATION RELAYS (when contacts are welded)
SF relays work maintain normal operating state even when the contact welding occur overloading short-circuit
currents.5: contact gapiskept at
min
