Molded Case Circuit Breaker
LZAM1-125S Molded Case Circuit Breaker
Applicable Scope
LZAM1 series molded case circuit breakers (hereinafter referred to as circuit breakers) are mainly suitable for distribution networks with AC 50Hz (or 60Hz), rated impulse withstand voltage 6KV, rated insulation voltage 690V, rated working voltage 400V and below, and rated current 1250A and below. They are used to distribute electric energy and protect lines, power supplies and electrical equipment from undervoltage, overload and short circuit, and improve the reliability of power supply. Under normal conditions, they can be used for infrequent line conversion and infrequent motor starting, and they have the characteristics of small size, high breaking capacity, and short arcing distance, making them ideal products for users.
The circuit breaker complies with GB/T14048.2-2008 and IEC60947-2 standards.
Normal working and installation conditions
1. The upper limit of the ambient air temperature shall not exceed +40°C, the lower limit shall not be lower than -5°C, and the average value over 24 hours shall not exceed +35°C.
2. The altitude of the installation site shall not exceed 2000m.
3. The relative humidity of the atmosphere shall not exceed 50% when the ambient air temperature is +40℃. Higher relative humidity is allowed at lower temperatures. The average maximum relative humidity in the wettest month is 90%. The average minimum temperature of the month is +25℃, and condensation caused by temperature changes shall be taken into account.
4. The pollution level is level 3.
5. The circuit breaker installation category is III.
6. The circuit breaker can be installed vertically (rigid installation) or horizontally (horizontal installation)
Technical parameters and performance
|
Model |
Rated current In(A) |
Number of poles |
Rated workingVoltage Ue(V) |
Rated insulation |
Rated short circuit limit |
Rated operating short circuit |
|
LZAM1-63S |
(6)/10/16/20/25/ 32/40/50/63 |
3 |
400 |
690 |
25 |
18 |
|
LZAM1-63H |
2/3/4 |
400 |
690 |
35 |
22 |
|
|
LZAM1-125S |
(10)/16/20/25/32/ 40/50/63/80/100/125 |
3 |
400 |
1000 |
35 |
22 |
|
LZAM1-125H |
2/3/4 |
400/690 |
1000 |
50/20 |
50/10 |
|
|
LZAM1-250S |
100/125/140/160/ 180/200/225/250 |
3 |
400 |
1000 |
35 |
22 |
|
LZAM1-250H |
2/3/4 |
400/690 |
1000 |
50/20 |
50/10 |
|
|
LZAM1-400S |
(225)/250/315/ 350/400 |
3 |
400 |
1000 |
50 |
35 |
|
LZAM1-400H |
3/4 |
400/690 |
1000 |
65/20 |
65/15 |
|
|
LZAM1-630S |
400/500/630 |
3 |
400 |
1000 |
50 |
35 |
|
LZAM1-630H |
3/4 |
400/690 |
1000 |
65/20 |
65/15 |
|
|
LZAM1-800 |
630/700/800 |
3/4 |
400 |
800 |
75 |
50 |
|
LZAM1-1250 |
1000/1250 |
3/4 |
400 |
800 |
80 |
65 |
Note: Specifications in brackets are not recommended
Installation Dimensions
| Model |
Number of poles |
Dimensions |
Installation Dimensions |
||||||||
|
LZAM1-63S |
3 |
L 135 |
L1 117 |
W 78 |
W1 25 |
H 91 |
H1 73 |
a 25 |
b 117 |
D M5 |
Φd 3.5 |
|
LZAM1-63H
|
3 |
135 |
117 |
78 |
25 |
98 |
82 |
25 |
117 |
M5 |
3.5 |
|
4 |
135 |
117 |
102 |
25 |
98 |
82 |
25 |
117 |
M5 |
3.5 |
|
|
LZAM1-125S
|
2 |
150 |
132 |
65 |
30 |
85 |
68 |
30 |
129 |
M8 |
4.5 |
|
3 |
150 |
132 |
92 |
30 |
85 |
68 |
30 |
129 |
M8 |
4.5 |
|
|
LZAM1-125H
|
2 |
150 |
132 |
65 |
30 |
104 |
86 |
30 |
129 |
M8 |
4.5 |
|
3 |
150 |
132 |
92 |
30 |
104 |
86 |
30 |
129 |
M8 |
4.5 |
|
|
4 |
150 |
132 |
122 |
30 |
104 |
86 |
30 |
129 |
M8 |
4.5 |
|
|
LZAM1-250S
|
2 |
165 |
145 |
75 |
35 |
110 |
86 |
35 |
126 |
M8 |
5.5 |
|
3 |
165 |
145 |
107 |
35 |
110 |
86 |
35 |
126 |
M8 |
5.5 |
|
|
LZAM1-250H
|
2 |
165 |
145 |
75 |
35 |
125 |
104 |
35 |
126 |
M8 |
5.5 |
|
3 |
165 |
145 |
107 |
35 |
125 |
104 |
35 |
126 |
M8 |
5.5 |
|
|
4 |
165 |
145 |
142 |
35 |
125 |
104 |
35 |
126 |
M8 |
5.5 |
|
|
LZAM1-400
|
3 |
257 |
224 |
150 |
48 |
151 |
107 |
44 |
194 |
M10 |
7 |
|
4 |
257 |
224 |
198 |
48 |
151 |
107 |
44 |
194 |
M10 |
7 |
|
|
LZAM1-630
|
3 |
270 |
234 |
182 |
58 |
161 |
113 |
58 |
200 |
M12 |
7 |
|
4 |
270 |
234 |
240 |
58 |
161 |
113 |
58 |
200 |
M12 |
7 |
|
|
LZAM1-800
|
3 |
275 |
242 |
210 |
70 |
153 |
108 |
70 |
243 |
M12 |
7 |
|
4 |
275 |
242 |
280 |
70 |
153 |
108 |
70 |
243 |
M12 |
7 |
|
|
LZAM1-1250
|
3 |
330 |
|
210 |
70 |
196 |
141 |
70 |
300 |
|
10 |
|
4 |
330 |
|
280 |
70 |
196 |
141 |
70 |
300 |
|
10 |
|
Terminal Block
Users can choose to purchase the copper bar in front of the circuit breaker for external wiring according to their needs. LZAM1-1250 is already equipped when it leaves the factory. If LZAM1-400, 630, 800 choose electric operation, it must be equipped when it leaves the factory. Its appearance and dimensions are as shown in the figure below (unit: mm)
