Miniature circuit breaker(英文版)
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Miniature circuit breaker(英文版)：微型斷路器
文本預(yù)覽
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R 2007/01
CCCCCIIIIIRRRRRCCCCCUUUUUIIIIITTTTT BBBBBRRRRREEEEEAAAAAKKKKKEEEEERRRRR
T
B 4 2
C
E
L
E
I
Y
N
A
I
TContents
Profile
04
Structural diagram
04
Technical curve
05
B42-63 Miniature circuit breaker
06
Applicable standard
Application conditions
Model implication
Main technical parameters
Time-current characteristic
External dimensions and installation dimensions
Product illustration
B42LE-40 leakage circuit breaker
09
Applicable standard
Application conditions
Model implication
Main technical parameters
Time-current characteristic
External dimensions and installation dimensions
Product illustrationB42 Series Miniature Circuit Breakers
Excellent current-limiting characteristic Fine interruption characteristic
B42 series miniature circuit breakers have excellent cur- The interruption ability is the main and also the most im-
rent-limiting characteristic, which is superior to that speci- portant electrical index for circuit breakers. The reliabil-
fied for Class III in IEC60898 standard. This means that, ity of a circuit breaker at an extreme interruption condi-
in case of a short circuit, B42 series Miniature circuit tion is related to the safety of the low voltage system,
breakers can minimize the heating effect of the cable and equipment or even persons. Meanwhile, the interruption
fault point, which can not only improve the safety of the characteristic is also an important criterion for judging
electrical system and reduce the effect of the fault on the the technical level, manufacture process and product qual-
system and equipment, but also reduce the impact of short ity of circuit breakers.
circuit on the breaker itself, thus greatly increasing the
electrical life of the breaker. The improvement of B42 series miniature circuit break-
ers in rapid interruption and arc-extinction techniques has
Isolation function greatly raised the interruption ability and also the safety
and reliability of B42 series products.
B42 series miniature circuit breakers conform to the supple-
mentary safety provisions for the breakers with isolation
function in IEC60947-2/GB14048.2 and fully satisfy all
the requirements on isolating the electrical devices.
(cid:2) Impulse withstand voltage, 6KV
(cid:2) The arrow on the lever indicates that the contacts
are in a real interruption status.
2
(cid:2) Lockable Off-position
0 (cid:2) Good shock resistance
0
7 N===Shanghai Tanyi Electric Co., Ltd
O===Type of circuit breakers
P===Rated voltage
4
Q===Wiring diagram
c B
irc u
it
b
4 2
s
e
N NM R===Applicable standard
re rie U S===CCC certification mark
a k
e rs
s
m in T===The arrow indicates the internal contact position status
ia tu ====(cid:2)f(cid:2)Indicating the contacts are closed
re
T ====(cid:2)l(cid:2)Indicating the contacts are open
S
U===Actuator lever
O
P V===Fixing screw
R Q
NM= Thermoplastic enclosure
VC-type curve D-type curve
Protect the normal load and the power distribution cable Protect the normal load and the power distribution cable
Electrical parameters: Electrical parameters:
Rated current: 10~63A(30°C) Rated current: 10~63A(30°C)
Tripping characteristic: instant tripping scope (5~10)In Tripping characteristic: instant tripping scope (5~10)In
s
C-type tripping curve D-type tripping curve
5
I MMMMMIIIIINNNNNIIIIIAAAAATTTTTUUUUURRRRREEEEE
R 2007/01
CCCCCIIIIIRRRRRCCCCCUUUUUIIIIITTTTT BBBBBRRRRREEEEEAAAAAKKKKKEEEEERRRRR
T
B 4 2
C
E
L
E
I
Y
N
A
I
TContents
Profile
04
Structural diagram
04
Technical curve
05
B42-63 Miniature circuit breaker
06
Applicable standard
Application conditions
Model implication
Main technical parameters
Time-current characteristic
External dimensions and installation dimensions
Product illustration
B42LE-40 leakage circuit breaker
09
Applicable standard
Application conditions
Model implication
Main technical parameters
Time-current characteristic
External dimensions and installation dimensions
Product illustrationB42 Series Miniature Circuit Breakers
Excellent current-limiting characteristic Fine interruption characteristic
B42 series miniature circuit breakers have excellent cur- The interruption ability is the main and also the most im-
rent-limiting characteristic, which is superior to that speci- portant electrical index for circuit breakers. The reliabil-
fied for Class III in IEC60898 standard. This means that, ity of a circuit breaker at an extreme interruption condi-
in case of a short circuit, B42 series Miniature circuit tion is related to the safety of the low voltage system,
breakers can minimize the heating effect of the cable and equipment or even persons. Meanwhile, the interruption
fault point, which can not only improve the safety of the characteristic is also an important criterion for judging
electrical system and reduce the effect of the fault on the the technical level, manufacture process and product qual-
system and equipment, but also reduce the impact of short ity of circuit breakers.
circuit on the breaker itself, thus greatly increasing the
electrical life of the breaker. The improvement of B42 series miniature circuit break-
ers in rapid interruption and arc-extinction techniques has
Isolation function greatly raised the interruption ability and also the safety
and reliability of B42 series products.
B42 series miniature circuit breakers conform to the supple-
mentary safety provisions for the breakers with isolation
function in IEC60947-2/GB14048.2 and fully satisfy all
the requirements on isolating the electrical devices.
(cid:2) Impulse withstand voltage, 6KV
(cid:2) The arrow on the lever indicates that the contacts
are in a real interruption status.
2
(cid:2) Lockable Off-position
0 (cid:2) Good shock resistance
0
7 N===Shanghai Tanyi Electric Co., Ltd
O===Type of circuit breakers
P===Rated voltage
4
Q===Wiring diagram
c B
irc u
it
b
4 2
s
e
N NM R===Applicable standard
re rie U S===CCC certification mark
a k
e rs
s
m in T===The arrow indicates the internal contact position status
ia tu ====(cid:2)f(cid:2)Indicating the contacts are closed
re
T ====(cid:2)l(cid:2)Indicating the contacts are open
S
U===Actuator lever
O
P V===Fixing screw
R Q
NM= Thermoplastic enclosure
VC-type curve D-type curve
Protect the normal load and the power distribution cable Protect the normal load and the power distribution cable
Electrical parameters: Electrical parameters:
Rated current: 10~63A(30°C) Rated current: 10~63A(30°C)
Tripping characteristic: instant tripping scope (5~10)In Tripping characteristic: instant tripping scope (5~10)In
s
C-type tripping curve D-type tripping curve
5
AIGC當(dāng)然，很高興為您解釋"Miniature circuit breaker (英文版)"。
A miniature circuit breaker, or MCB for short, is a type of electrical safety device commonly used in residential and commercial settings. It's designed to protect electrical circuits from excessive currents, which can cause fires or damage to appliances. These small breakers are typically found in sockets, switches, and power panels, and they have a built-in mechanism that trips or "breaks" when the current flow exceeds a pre-set limit, interrupting the circuit to prevent overheating.
In simpler terms, an MCB acts as a fuse but with more advanced features, such as automatic reset (after the issue has been resolved, it will usually return to its normal state) and faster response times. They are particularly useful in protecting electronic devices, lighting systems, and other low-voltage applications where space is limited and reliability is essential. If you have any questions about selecting or using a miniature circuit breaker, feel free to ask!
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