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140G Molded Case Circuit Breakers

ůůĞŶͲ ƌĂĚůĞLJ ďƵůůĞƟŶ ϭϰϬ' ĐƵƌƌĞŶƚͲůŝŵŝƟŶŐ ŵŽůĚĞĚ ĐĂƐĞ ĐŝƌĐƵŝƚ ďƌĞĂŬĞƌƐ ;D ƐͿ ĂƌĞ ƌĂƚĞĚ ƚŽ ŽƉĞŶ ŝŶ
ůĞƐƐ ƚŚĂŶ ŚĂůĨ ŽĨ Ă ĐLJĐůĞ ƵŶĚĞƌ ĨĂƵůƚ ĐŽŶĚŝƟŽŶƐ͘ dŚŝƐ ƉĞƌĨŽƌŵĂŶĐĞ ůŝŵŝƚƐ ƚŚĞ ůĞƚͲƚŚƌŽƵŐŚ ĞŶĞƌŐLJ͕ ƉƌŽǀŝĚ-
ŝŶŐ ĞŶŚĂŶĐĞĚ ƉƌŽƚĞĐƟŽŶ ĨŽƌ ĚŽǁŶƐƚƌĞĂŵ ĐŽŵƉŽŶĞŶƚƐ͘ /Ŷ ĂĚĚŝƟŽŶ͕ ƉĞƌ h>ϱϬϴ ^ ϰ͕ ƉĂŶĞů ĚĞƐŝŐŶĞƌƐ
ĐĂŶ ƵƐĞ Ă ĐƵƌƌĞŶƚ ůŝŵŝƟŶŐ ĐŝƌĐƵŝƚ ďƌĞĂŬĞƌ͛Ɛ ƌĂƟŶŐ ƚŽ ĐĂůĐƵůĂƚĞ ŽǀĞƌĂůů ƉĂŶĞůͬďƌĂŶĐŚͲĐŝƌĐƵŝƚ ƐŚŽƌƚ ĐŝƌĐƵŝƚ
ĐƵƌƌĞŶƚ ƌĂƟŶŐƐ ǁŝƚŚŽƵƚ ŚĂǀŝŶŐ ƚŽ ƚĞƐƚ ƚŚĞ ƐƉĞĐŝĮĐ ĐŽŵƉŽŶĞŶƚƐ ŝŶ ĐŽŵďŝŶĂƟŽŶ͘

ͻ dŚĞƐĞ ĐƵƌƌĞŶƚ ůŝŵŝƟŶŐͲƌĂƚĞĚ Bulletin 140G Current-Limiting
MCCBs are available in three Molded Case Circuit Breakers
ĨƌĂŵĞ ƐŝnjĞƐ͗
ͻ ͻ ϭϰϬ' ,Ͳ&ƌĂŵĞ ʹ ϲϱ Ŭ ĂŶĚ
ϭϬϬ Ŭ Λ ϰϴϬs
140G/140MG Features
ͻ ͻ ϭϰϬ' :Ͳ&ƌĂŵĞ ʹ ϲϱ Ŭ ĂŶĚ
t *OUFSSVQUJOH DBQBDJUZ GSPN UP
ϭϬϬ Ŭ Λ ϰϴϬs 150 kA allows a single unit to address
many applications, thereby reducing
ͻ ͻ ϭϰϬ' <Ͳ&ƌĂŵĞ ʹ ϲϱ Ŭ ĂŶĚ the number of diff erent products to
be specifi ed
ϭϬϬ Ŭ Λ ϰϴϬs t &MFDUSPOJD USJQ VOJUT BWBJMBCMF GSPN
ͻ Because they are based on UP "
t 8JEF SBOHF PG PQFSBUJOH NFDIBOJTNT
our standard 140G MCCBs, to fi t with a variety of panel
confi gurations
ƚŚĞ ĐƵƌƌĞŶƚ ůŝŵŝƟŶŐ ǀĞƌƐŝŽŶƐ t 4IPSU DJSDVJU DVSSFOU SBUJOH 4$$3
coordination with Allen-Bradley 140G J-Frame 250A 140G K-Frame 400A 140G H-Frame 125A
share the wide-range of contactors, overload relays and
motor starters
available accessories. They Allen-Bradley bulletin 140G current-limiting molded case circuit
breakers (MCCBs) are rated to open in less than half of a cycle under fault
are available as both com- conditions. This performance limits the let-through energy, providing
enhanced protection for downstream components. In addition, per
pletely assembled MCCBs UL508A SB4, panel designers can use a current limiting circuit breaker’s
Current-limiting molded rating to calculate overall panel/branch-circuit short circuit current
and as components. case circuit breakers ratings without having to test the specifi c components in combination.
(MCCBs) are rated to open These current limiting-rated MCCBs are available in three frame sizes:
in less than half of a cycle t ( ) 'SBNF o L" BOE L" ! 7
under fault conditions. t ( + 'SBNF o L" BOE L" ! 7
t ( , 'SBNF o L" BOE L" ! 7
Because they are based on our standard 140G MCCBs, the current limiting
versions share the wide-range of available accessories. They are available
as both completely assembled MCCBs and as components.
Tripping Time Available
I U &OFSHZ
Peak
Current
Peak Let-Through (ip)
Let-Through &OFSHZ * t
Current (ip)
'BVMU 'BVMU
Begins &YUJOHVJTIFE
Total
Clearing
Time
140G/140MG Features Symmetrical Prospective Current-1
ͻ /ŶƚĞƌƌƵƉƟŶŐ ĐĂƉĂĐŝƚLJ ĨƌŽŵ Ϯϱ ƚŽ ϭϱϬ Ŭ ĂůůŽǁƐ ǁŝƚŚ Ă ǀĂƌŝĞƚLJ ŽĨ ƉĂŶĞů ĐŽŶĮŐƵƌĂƟŽŶƐ
Ă ƐŝŶŐůĞ ƵŶŝƚ ƚŽ ĂĚĚƌĞƐƐ ŵĂŶLJ ĂƉƉůŝĐĂƟŽŶƐ͕ ͻ ^ŚŽƌƚ ĐŝƌĐƵŝƚ ĐƵƌƌĞŶƚ ƌĂƟŶŐ ;^ ZͿ ĐŽŽƌĚŝŶĂ-
ƚŚĞƌĞďLJ ƌĞĚƵĐŝŶŐ ƚŚĞ ŶƵŵďĞƌ ŽĨ ĚŝīĞƌĞŶƚ ƟŽŶ ǁŝƚŚ ůůĞŶͲ ƌĂĚůĞLJ ĐŽŶƚĂĐƚŽƌƐ͕ ŽǀĞƌůŽĂĚ
ƉƌŽĚƵĐƚƐ ƚŽ ďĞ ƐƉĞĐŝĮĞĚ relays and motor starters
ͻ Electronic trip units available from 25 to 3000
A
ͻ tŝĚĞ ƌĂŶŐĞ ŽĨ ŽƉĞƌĂƟŶŐ ŵĞĐŚĂŶŝƐŵƐ ƚŽ Įƚ

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