Brand： Allen Bradley
Model number：1489-M1C080
Colour：new
Warranty: 12 months
Lead Time：3-day working day
Country of origin: USA Price: Please contact us
Product weight：0.43kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
Description:
Application Considerations
Tripping Characteristics
The trip curve characteristics are shown on the following
pages. The trip bands shown for each breaker represent
current tripping limits for a circuit breaker and are within the
limits established by UL.
The standard tripping characteristic for Bulletin 1489-M is
Type C. Type C has a magnetic trip activated at 5-10 times
the rated current of the circuit breaker. The reference
temperature for the thermal tripping characteristics is 30 °C.
The Type C characteristic will suit most applications.
In rare occurrences when the Type C characteristic does not
fully meet the application, Type D magnetic trip
characteristic is available, allowing for transients
approximately twice as high as the standard Type C.
For a specific current at 30 °C, a circuit breaker will open
("clear the circuit") automatically at some total time that will
be within the minimum and maximum time shown on the
curves. For example, a one-pole, 15 A, Bulletin 1489-M circuit
breaker trips in not less than 1 s and not more than 200 s on
a 30 A current. Because the UL standard defines this time
spread, users should not specify exact tripping time. The
lower current portion of the curves (upper left) depicts the
time to trip due to thermal action and reflect overload
protection of the wire and connect load. The higher current
portion of the curves (lower right) depicts the trip due to
magnetic action of the circuit breaker and reflects protection
due to short circuit level currents.
The following is a discussion of application considerations
related to North American applications. When applying product
to IEC regional requirements, follow IEC practices and guidelines.
The selection of a specific ampere rating for a specific
application is dependent on the type of load and duty cycle
and is governed by the National Electric Code (Canadian
Electric Code) and UL/CSA. In general, the codes require that
overcurrent protection is at the current supply and at points
where wire sizes are reduced. In addition, the codes state
that conductors be protected according to their current
carrying capacity. There are specific situations that require
application consideration, such as motor circuit, and
guidelines for the selection for transformer protection.
The Bulletin 1489-M circuit breakers are “non-100% rated” as
defined by UL 489, para 7.1.4.2. As such, the circuit breaker's
rating should be loaded to no more than 80% if used with
continuous loads.
Line and load may be reversed. The Bulletin 1489-M circuit
breaker may be bottom fed.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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