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.
This prevents high voltages from
developing between contacts.
load intentionally raise the load current
reaching the contacts., N.
• r
Since voltage levels the contacts used
in low current circuits (dry circuits) are
• r
b ts
1) The clearance between form and B
contacts com pact control com ponents
is small.
One method increase reliability to
add dum resistor parallel with the
2) Even the three N.
Connect the contacts the other side.General Application Guidelines
4 tio ts
• tio ts
Connect the load one side the power
supply shown Figure (a). The
construction the control com ponent
itself must examined and sufficient
margin safety must provided
especially creepage between
electrodes, space distance, presence of
barrier, etc. The occurrence shorts due to
arcing must assumed.
• iffe s
Although there tendency select
miniature control com ponents because of
the trend toward miniaturizing electrical
control units, care must taken when
selecting the type relay circuits
where different voltages are applied
between electrodes ulti-pole relay,
especially when switching two different
power supply circuits.C. contacts
are connected both side the power
supply shown Figure (b), there is
low, poor conduction often the result.O., and COM
contacts are connected that they
short, circuit must never designed to
allow the possibility burning or
generating overcurrent.
a risk shorting the power supply when
relatively close contacts short.
14 ds_x61_en_relay_technical_information_091112D
. This not a
problem that can determined from
sequence circuit diagrams.
3) forward and reverse motor rotation
circuit using switching form and B
contacts must never designed
