Molded case circuit breaker HM1-125M、HM1-125L、HM1-250M、HM1-630L

HM1 series plastic shell circuit breaker (hereinafter referred to as circuit breaker) is suitable for AC 50Hz, rated insulation voltage 1000V (shellgrade63Ais690V),rated working voltage 400V/690V, rated working current up to 1600A, used to distribute electric energy and protect lines,Power supplies and electrical equipment from overload, under voltage and short circuit,improving the reliability of power supply. Under normal conditions, it can be used as the infrequent starting of the motor with infrequent conversion of the circuit.

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Main Technical indicators

1.The thermal release of the circuit breaker has the inverse time limit characteristic: the electromagnetic release is an instantaneous action, and the action characteristics of the overcurrent release of the circ uit breaker for distribution when each pole is powered on at the same time is shown in Table 2.

Table 2

Rated current of release ( A) Thermal release (ambient temperature+40℃) Operating current of electromagnetic release(A)
1.05In Inaction time (cold state) 1.30In Action time (hot)
In≤63 ≥1h <1h 10ln±20%
63≤ln≤125 ≥2h <2h 10ln±20%
125≤ln≤1600 ≥2h <2h 5ln±20% or 10ln±20%

Table 3

Setting current 10≤ln≤250 250≤ln≤1600
1.0ln Inaction time (cold state) ≥2h ≥2h
1.20In Action time (hot) <2h <2h
1.50ln Action time (hot) 4min 8min
7.20In Action time (cold state) 4s 6s
Instantaneous tripping action current 12ln±20% 12ln±20%

2. When the applied voltage of the shunt release is between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably broken.

3. The under voltage release can reliably break the circuit breaker when the power supply voltage drops to within 70% of the rated working voltage of the under voltage release; when the power supply voltage is lower than 35% of the rated operating voltage of the under voltage release, the under voltage release can prevent the circuit breaker from closing; when the power supply voltage is higher than 85% of the rated width of the under voltage release, the under voltage release can ensure the reliable closure of the circuit breaker.

Main technical parameters of circuit breaker

Rated insulation voltage UI=1000V, rated working voltage Ue=400V/690V, raged impulse withstand voltage Uimp=12kV. The circuit breaker has isolation function.

Model Rated current Rated limit short circuit t breaking capacity Icu(kA) Rated operating short-circuit breaking capacity Ics(kA) Arc distance(mm)
AC400V AC690V AC400V AC690V
HM1-63S (6)10/16/20/2532/40/50/63 25 18 50
HM1-63H 35 22
HM1-125S (10)16/20/25/32/4050/63/80/100/125 35 22 50
HM1-125H 50 20 50 10
HM1-250S (100)125/140/160180/200/225/250 35 22 50
HM1-250H 50 20 50 10
HM1-400S 225/250/315350/400 50 35
HM1-400H 65 20 65 15
HM1-400L 100 75
HM1-630S 400/500/630 50 35 100
HM1-630H 65 20 65 15
HM1-630L 100 75
HM1-800 630/700/800 75 50 100
HM1-1600 800/1000/1250/1600 85 50 100

Note:

1.The data in () is not recommended;

2.HM1-63Ui=690VUimp=6kV,Ue=400V;

3.HM1-800/1600Ui=800VUimp=8kVUe=400V

Technical data of ancillary devices

1.The ratings of auxiliary contacts and alarm contacts are shown in Table 5.

Table 5

Classification Rated current of shell frame(A) Conventional heating current Ith(A) Rated working current at 380V AC le(A)
Auxiliary contact Inm250 3 0.3
Inm400 3 0.4
Alarm contact 63Inm1600 3 0.3

2. When the applied voltage of the shunt release is between 70% and 110% of the rated control power supply voltage, the circuit breaker can be reliably broken.

3. The under voltage release can reliably break the circuit breaker when the power supply voltage drops to within 70% of the rated working voltage of the under voltage release; when the power supply voltage is lower than 35% of the rated operating voltage of the under voltage release, the under voltage release can prevent the circuit breaker from closing; when the power supply voltage is higher than 85% of the rated width of the under voltage release, the under voltage release can ensure the reliable closure of the circuit breaker.


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