Fig. H3 – Symbol for a disconnector (or isolator) (DB422390)
Fig. H4 – Symbol for a load-break switch (DB422391)
Fig. H6 – Symbol for a bistable remote control switch (impulse relay) (DB422392_EN)
Fig. H7 – Symbol for a monostable remote control switch (contactor, relay) (DB422393_EN)
Fig. H8 – Symbol for fuses (DB422394)
Fig. H9 – Zones of fusing and non-fusing for gG and gM fuses (DB422395_EN)
Fig. H11 – Standardized zones of fusing for type aM fuses (all current ratings) (DB422396_EN)
Fig. H12 – Current limitation by a fuse (DB422397_EN)
Fig. H13 – Limited peak current versus prospective rms values of the AC component of fault current for LV fuses (DB422398_EN)
Fig. H14 – Symbol for an automatic tripping switch-fuse (DB422399)
Fig. H15 – Symbol for a non-automatic fuse-switch (DB422400)
Fig. H16 – Symbol for a non-automatic switch-fuse
(DB422401)
(DB422402)
Fig. H17 – Symbol for a fuse disconnector + discontactor (DB422403)
Fig. H18 – Symbol for a fuse-switch disconnector + discontactor (DB422404)
Fig. H21 – Main parts of a circuit breaker (DB422405_EN)
Fig. H22 – Domestic-type circuit breaker providing overcurrent protection and circuit isolation features (PB116761)
Fig. H23 – Domestic-type circuit breaker with incorparated protection against electric shocks (PB116762)
Fig. H24 – “Acti 9” system of LV modular switchgear components (DB422406_EN)
Fig. H25 – Example of a Compact NSX industrial type of circuit breaker capable of numerous auxiliary functions (PB105112-z)
Fig. H26 – Example of air circuit breakers. Masterpact provides many control features in its “Micrologic” tripping unit
(PB116047_20)
(PB116184-50)
Fig. H27 – Example of a Compact NSX630N circuit breaker with a Micrologic rated 400A adjusted to 0.9 to give Ir = 360 A (DB422407_EN)
Fig. H29 – Tripping curve of a thermal-magnetic circuit breaker (DB422408)
Fig. H30 – Tripping curve of a circuit breaker with advanced electronic trip unit (DB422409)
Fig. H32 – Category A circuit breaker (DB422410)
Fig. H33 – Category B circuit breaker (DB422411)
Fig. H35 – Prospective and actual currents (DB422412_EN)
Fig. H36 – Performance curves of a typical LV current-limiting circuit breaker
(DB422413_EN)
(DB422414_EN)
Fig. H37 – Ambient temperature (DB422415_EN)
Fig. H41 – Double earth fault situation (DB422437_EN)
Fig. H42 – Example of a transformer in a consumer’s substation (DB422421_EN)
Fig. H43 – Transformers in parallel (DB422422_EN)
Fig. H44 – Transformers in parallel (DB422423_EN)
Fig. H47 – Principle of selectivity (DB431076)
Fig. H48 – Total and partial selectivity (DB422425_EN)
Fig. H49 – Total selectivity between CBs A and B (DB422426_EN)
Fig. H50 – Partial selectivity between CBs A and B (DB422427_EN)
Fig. H51 – Current based selectivity, Time based selectivity, Combination of both
(DB422428)
(DB422429)
(DB422430_EN)
Fig. H52 – Energy based selectivity (DB431077_EN)
Fig. H53 – Practical example of selectivity at several levels with Schneider Electric circuit breakers (with electronic trip units) (DB431078_EN)
Fig. H54 – Logic discrimination. (DB422434_EN)
Fig. H55 – Example (DB422435_EN)
Fig. H56 – Curves of MV fuses and LV circuit breaker (DB422436_EN)
Fig. H57 – Example of ultra rapid power circuit breaker: Masterpact UR (Schneider Electric) (PB101594_SE-z)
Fig. H58 – Diagram of the network (DB422438_EN)
Fig. H59 – Diagram of the network with Masterpact UR added as tie breaker (DB422439_EN)
Fig. H60 – Resulting short-circuit current (DB422440_EN)
