Modular units

PE57163
61035N
Characteristics of
the functional units
Operating mechanisms
Single-function operating mechanism
for the SF circuit breakers 24 kV and 36 kV
and Evolis 24 kV lateral
b Circuit-breaker function
v independent-operation closing in two steps.
First operating mechanism recharge by motor or lever, then release of the stored
energy by push-button (I) or trip unit.
v independent-operation opening by push-button (O) or trip units.
b Auxiliary contacts
v circuit breaker (4 O + 4 C),
v mechanism charged (1 C).
b Mechanical indications
Operation counter.
b Opening releases
v Mitop (low energy),
v shunt trip,
v undervoltage.
b Closing release
v shunt trip
b Motor option (option and installation at a later date possible).
Possible combinations between opening releases
SF1 SFset
Release type Combinations Combinations
1 2 3 4 5 6 1 2 3 4
Mitop (low energy) b b b b b b
Shunt trip b b b b
Undervoltage b b b b
P2 stored energy operating mechanism
for the Evolis circuit breaker 17.5 kV frontal
b Circuit-breaker function
v independent-switching operating closing in two steps.
First operating mechanism recharge by motor or lever, then release of the stored
energy by push-button (I) or trip unit.
v independent-operation opening by push-button (O) or trip units.
v spring energy release.
b Auxiliary contacts
v circuit breaker (4 O + 4 C),
v mechanism charged (1 C).
b Mechanical indications
Operation counter.
b Opening releases
v Mitop (low energy),
v shunt trip,
v undervoltage.
b Closing release
v shunt trip
b Motor option (option and installation at a later date possible).
68 AMTED398078EN.indd