Brand：ABB Model number： DS3800HSDD-IEIF
Lead Time：3-day working day Country of origin: USA
Price: Please contact us Product weight：0.22kg
Colour：new Warranty: 12 months
hipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
ABB DS3800HSDD-IEIF Industrial Control Module Spare Parts
g and Refrigeration circuit breakers as defined by
UL 489, paragraph 6.7 and may used in this type of
application.
SWD Rating
The Bulletin 1489-M breakers (0.5 … 20 A) are rated as SWD
(Switch Duty) and as such may be applied to switch
fluorescent lighting loads up to their current and voltage
maximum.
Bulletin 1489-M Circuit Breakers are rated as current limiting
circuit breakers as defined by UL 489, paragraph 8.6.
The Bulletin 1489-M line features the ability to achieve short
circuit interruptions far more effectively than conventional
breakers. In conventional circuit breakers, the short circuit
interruption time required is approximately one or two half
cycles of an AC sine wave. When the contacts open, the
resulting arc continues to burn until the current level passes
through zero. The arc may re-ignite because of the
insufficient width of the contact gap. The current that flows
until the arc is extinguished produces a heating effect
proportional to the I
2
t value (let-through-energy) of the fault
current.
The Bulletin 1489-M device is designed to substantially
reduce the amount of let-through-current and the resulting
let-through-energy that can damage protected components.
The Bulletin 1489-M has the ability to interrupt short circuit
current within the first half cycle of the fault. Limiting letthrough current and energy will protect against the harmful
effects of overcurrent and is focused primarily on avoiding
excessive heat and mechanical damage.
Where an orderly shutdown is required to minimize the
hazards to personnel and equipment, a system of
coordination based upon the faulted or overloaded circuit is
isolated by selective operation of only the overcurrent
protective device closest to the overcurrent condition. The
user should select devices that meet this requirement.
References: NEC 240.12. Also see CEC.
Coordinated Overcurrent Protection
Current Limiting
H
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1
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