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Applicable scope
The M1 series moulded case circuit breaker (hereinafter referred to as the circuit breaker) is one of the new circuit
breakers developed by our company with international advanced design and manufacturing technology. With rated insulation voltage of 690V/1140V (500V for M1-63), it's suitable for circuit with frequency of AC 50Hz, rated working voltage of 690V and below (400V for M1-63) and rated working current up to 1600A for infrequent switching and infrequent motor startup. The circuit eaker has overload short circuit and undervoltage protection device, which can protect the circuit and power equipment from damage.
Classification
O According to the number of poles in the product, it is classified into two poles (125A, 160A, 250A), three poles and four poles (M1-800). There are four types for neutral pole (N pole) in 4P products:
Type A: The N-pole is not equipped with over-current release, and the N-pole is always connected, not closed or opened with other three poles.
Type B: N-pole is not equipped with over-current release, and N-pole is closed and opened together
with other three poles.Type C: N-pole is equipped with over-current release, and N-pole is closed and opened together with other three poles.
Type D: N-pole is equipped with over-current release, and the N-pole is always connected, not closed and opened with other three poles.
O Classification by rated current (A):
M1-63:(6), 10, 16, 20, 25, 32, 40, 50 and 63A (no overload protection for 6A);
M1-125: (10), 16.20, 25, 32, 40, 50, 63, 80, 100 and 125A;
M1-250: 125, 140, 160, 180, 200, 225 and 250A;
M1-400: 225, 250, 315, 350 and 400A;
M1-630: 400, 500 and 630A;
M1-800: 630, 700 and 800A.
M1-1250: 800, 1000 and 1250A.
M1-1600: 1250 and 1600A.[Specification with () is not recommended]
O According to the wiring method, it can be classified into three types: front panel wiring, rear panel wiring and plug-in type.
O According to the type of overcurrent release, there are two types: thermal-electromagnetic (complex) type and electromagnetic (instantaneous) type.
O According to the breaking capacity of the circuit breaker, it is classified into standard type (L type), medium type (M type) and high breaking type (H type).
O According to the operation mode, it can be classified into direct handle operation, rotation handle operation and electric operation.
O Classification by number of poles: two poles, three poles, and four poles.
Main technical parameter
O Rated value of circuit breaker
| Model | Rated frame current Inm (A) | Rated current In (A) | Rated working voltage Ue (V) | Rated insulation voltage Ui (V) | Rated ultimate short-circuit breaking capacity Icu (kA) 400V/690V | Rated service short- circuit breaking capacity Ics (kA) 400V/690V | Number of poles |
|---|---|---|---|---|---|---|---|
| M1-63L | 63 | 6,10,16,25, 32,40,50,63 | 400 | 690 | 25* | 18* | 2 |
| M1-63M | 63 | 50* | 35* | 3 | |||
| M1-125L | 125 | 10,16,20,25, 32,40,50,63, 80,100,125 | 400 | 690 | 35/8 | 22/4 | 3 |
| M1-125M | 125 | 50/10 | 35/5 | 2、3、4 | |||
| M1-125H | 125 | 85/20 | 50/10 | 3 | |||
| M1-250L | 250 | 125,140,160, 180,200,225, 250 | 400 | 690 | 35/8 | 25/4 | 3 |
| M1-250M | 250 | 50/10 | 35/5 | 2、3、4 | |||
| M1-250H | 250 | 85/20 | 50/10 | 3 | |||
| M1-400L | 400 | 250,315, 350,400 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-400M | 400 | 80/10 | 50/5 | 3. 4 | |||
| M1-400H | 400 | 100/20 | 65/10 | 3. 4 | |||
| M1-630L | 630 | 400,500, 630 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-630M | 630 | 80/10 | 50/5 | 3. 4 | |||
| M1-630H | 630 | 100/20 | 65/10 | 3. 4 | |||
| M1-800M | 800 | 630,700, 800 | 400 | 690 | 100/30 | 65/15 | 3.4 |
| M1-800H | 800 | 100* | 65* | 3 | |||
| M1-1600L | 1600 | 1250,1600 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-1600M | 1600 | 80/10 | 50/5 | 3 |
Note: 1Test parameter at 400V; 2No thermal release for 6A;@Zero arc circuit breaker can be customized for 63H~800H
(except for 800H/4P);
@Cage type terminal can be equipped for 100S, H and 225S, H.
O Inverse time limit disconnection action characteristic of circuit breaker for distribution when all poles of the
overcurrent release are simultaneously energized (see Table 3)
| No. | Test current name | 1/Ir | Agreed time | Start state |
|---|---|---|---|---|
| 1 | Agreed non-tripping current | 1.05 | 2h(In>63A), 1h(In≤63A) | Cold state |
| 2 | Agreed tripping current | 1.3 | 2h(In>63A), 1h(In≤63A) | Immediately after test No.1 |
Inverse time limit disconnection action characteristic of circuit breaker for motor protection when all poles of the over current release are simultaneously energized (see Table 4)
The instantaneous action characteristic of circuit breaker for distribution is set to 10In+20%, and the instantaneous
characteristic of circuit er for motor protection is set to 12ln±20%
| No. | Setting Current | Agreed Time | Start State | Remark |
|---|---|---|---|---|
| 1 | 1.0ln | >2h | Cold state | |
| 2 | 1.2ln | ≤2h | Immediately after test No. 1 | |
| 3 | 1.5ln | ≤4min | Cold state | 10≤In≤225 |
| ≤8min | Cold state | 225<In≤630 | ||
| 4 | 7.2ln | 4s≤T≤10s | Cold state | 10≤In≤225 |
| 6s≤T≤20s | Cold state | 225<In≤630 |
Inverse time limit protection characteristic curve of circuit breaker for distribution (see Figure 1-12)
Outline and Installation Dimension
Outline and installation dimension of M1-63, 125 and 250 (front panel wiring) (see Table 5)
Outline and installation dimension of M1-400, 630 and 800(front panel wiring) (see Table 6)
Outline and installation dimension of M1-1250,1600 (front panel wiring)
M1 plug-in type outline and installation dimension 
| Model | Outline and installation dimension (mm) | |||||
| A | A1 | B | B1 | C | E | |
| M1-63 type | 117 | 117 | 50 | 75 | 25 | 117 |
| M1-125 type | 132 | 132 | 60 | 95 | 35 | 62 |
| M1-250 type | 144 | 144 | 70 | 105 | 35 | 124 |
| M1-400 type | 224 | 224 | 96 | 144 | 44 | 194 |
| M1-630 type | 234 | 234 | 116 | 174 | 58 | 200 |
| M1-800 type | 243 | 243 | 140 | 210 | 70 | 243 |
Internal and external accessory of circuit breaker
O Internal accessory of circuit breaker
O Undervoltage release
When the voltage drops (even slowly) to the range of 70% and 35% of the rated voltage, the undervoltage release should reliably trip the circuit breaker; when the supply voltage of the undervoltage release is lower than 35% of the release voltage, the undervoltage release should be able to prevent the circuit breaker from closing; when the supply voltage is equal to or greater than 85%, it should be ensured that the circuit breaker is closed.
Tips: The circuit breaker equipped with undervoltage release can only open and close normally when the under voltage passes through the rated voltage.
| Code | A2 | A4 | D1 | D2 |
|---|---|---|---|---|
| Voltage specification | AC230V | AC400V | DC110V | DC220V |
| Rated frequency | 50Hz | 50Hz | / | / |
Shunt release
The circuit breaker can reliably open under rated voltage of 70% to 110%. Rated value
| Code | A2 | A4 | D1 | D2 | D3 |
|---|---|---|---|---|---|
| Voltage specification | AC230V | AC400V | DC110V | DC220V | DC24V |
| Rated frequency | 50Hz | 50Hz | / | / | / |
Note: When the voltage specification is DC24V, the rated current reaches 5A±10%.
O Auxiliary contact and alarm contact
| Frame current | Conventional thermal current Ith A | Rated current at AC400V le A | Rated current at DC230V le A |
|---|---|---|---|
| Inm≤225A | 3 | 0.26 | 0.14 |
| Inm≥400A | 6 | 3 | 0.2 |
Applicable scope
The M1 series moulded case circuit breaker (hereinafter referred to as the circuit breaker) is one of the new circuit
breakers developed by our company with international advanced design and manufacturing technology. With rated insulation voltage of 690V/1140V (500V for M1-63), it's suitable for circuit with frequency of AC 50Hz, rated working voltage of 690V and below (400V for M1-63) and rated working current up to 1600A for infrequent switching and infrequent motor startup. The circuit eaker has overload short circuit and undervoltage protection device, which can protect the circuit and power equipment from damage.
Classification
O According to the number of poles in the product, it is classified into two poles (125A, 160A, 250A), three poles and four poles (M1-800). There are four types for neutral pole (N pole) in 4P products:
Type A: The N-pole is not equipped with over-current release, and the N-pole is always connected, not closed or opened with other three poles.
Type B: N-pole is not equipped with over-current release, and N-pole is closed and opened together
with other three poles.Type C: N-pole is equipped with over-current release, and N-pole is closed and opened together with other three poles.
Type D: N-pole is equipped with over-current release, and the N-pole is always connected, not closed and opened with other three poles.
O Classification by rated current (A):
M1-63:(6), 10, 16, 20, 25, 32, 40, 50 and 63A (no overload protection for 6A);
M1-125: (10), 16.20, 25, 32, 40, 50, 63, 80, 100 and 125A;
M1-250: 125, 140, 160, 180, 200, 225 and 250A;
M1-400: 225, 250, 315, 350 and 400A;
M1-630: 400, 500 and 630A;
M1-800: 630, 700 and 800A.
M1-1250: 800, 1000 and 1250A.
M1-1600: 1250 and 1600A.[Specification with () is not recommended]
O According to the wiring method, it can be classified into three types: front panel wiring, rear panel wiring and plug-in type.
O According to the type of overcurrent release, there are two types: thermal-electromagnetic (complex) type and electromagnetic (instantaneous) type.
O According to the breaking capacity of the circuit breaker, it is classified into standard type (L type), medium type (M type) and high breaking type (H type).
O According to the operation mode, it can be classified into direct handle operation, rotation handle operation and electric operation.
O Classification by number of poles: two poles, three poles, and four poles.
Main technical parameter
O Rated value of circuit breaker
| Model | Rated frame current Inm (A) | Rated current In (A) | Rated working voltage Ue (V) | Rated insulation voltage Ui (V) | Rated ultimate short-circuit breaking capacity Icu (kA) 400V/690V | Rated service short- circuit breaking capacity Ics (kA) 400V/690V | Number of poles |
|---|---|---|---|---|---|---|---|
| M1-63L | 63 | 6,10,16,25, 32,40,50,63 | 400 | 690 | 25* | 18* | 2 |
| M1-63M | 63 | 50* | 35* | 3 | |||
| M1-125L | 125 | 10,16,20,25, 32,40,50,63, 80,100,125 | 400 | 690 | 35/8 | 22/4 | 3 |
| M1-125M | 125 | 50/10 | 35/5 | 2、3、4 | |||
| M1-125H | 125 | 85/20 | 50/10 | 3 | |||
| M1-250L | 250 | 125,140,160, 180,200,225, 250 | 400 | 690 | 35/8 | 25/4 | 3 |
| M1-250M | 250 | 50/10 | 35/5 | 2、3、4 | |||
| M1-250H | 250 | 85/20 | 50/10 | 3 | |||
| M1-400L | 400 | 250,315, 350,400 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-400M | 400 | 80/10 | 50/5 | 3. 4 | |||
| M1-400H | 400 | 100/20 | 65/10 | 3. 4 | |||
| M1-630L | 630 | 400,500, 630 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-630M | 630 | 80/10 | 50/5 | 3. 4 | |||
| M1-630H | 630 | 100/20 | 65/10 | 3. 4 | |||
| M1-800M | 800 | 630,700, 800 | 400 | 690 | 100/30 | 65/15 | 3.4 |
| M1-800H | 800 | 100* | 65* | 3 | |||
| M1-1600L | 1600 | 1250,1600 | 400 | 690 | 50/10 | 35/5 | 3. 4 |
| M1-1600M | 1600 | 80/10 | 50/5 | 3 |
Note: 1Test parameter at 400V; 2No thermal release for 6A;@Zero arc circuit breaker can be customized for 63H~800H
(except for 800H/4P);
@Cage type terminal can be equipped for 100S, H and 225S, H.
O Inverse time limit disconnection action characteristic of circuit breaker for distribution when all poles of the
overcurrent release are simultaneously energized (see Table 3)
| No. | Test current name | 1/Ir | Agreed time | Start state |
|---|---|---|---|---|
| 1 | Agreed non-tripping current | 1.05 | 2h(In>63A), 1h(In≤63A) | Cold state |
| 2 | Agreed tripping current | 1.3 | 2h(In>63A), 1h(In≤63A) | Immediately after test No.1 |
Inverse time limit disconnection action characteristic of circuit breaker for motor protection when all poles of the over current release are simultaneously energized (see Table 4)
The instantaneous action characteristic of circuit breaker for distribution is set to 10In+20%, and the instantaneous
characteristic of circuit er for motor protection is set to 12ln±20%
| No. | Setting Current | Agreed Time | Start State | Remark |
|---|---|---|---|---|
| 1 | 1.0ln | >2h | Cold state | |
| 2 | 1.2ln | ≤2h | Immediately after test No. 1 | |
| 3 | 1.5ln | ≤4min | Cold state | 10≤In≤225 |
| ≤8min | Cold state | 225<In≤630 | ||
| 4 | 7.2ln | 4s≤T≤10s | Cold state | 10≤In≤225 |
| 6s≤T≤20s | Cold state | 225<In≤630 |
Inverse time limit protection characteristic curve of circuit breaker for distribution (see Figure 1-12)
Outline and Installation Dimension
Outline and installation dimension of M1-63, 125 and 250 (front panel wiring) (see Table 5)
Outline and installation dimension of M1-400, 630 and 800(front panel wiring) (see Table 6)
Outline and installation dimension of M1-1250,1600 (front panel wiring)
M1 plug-in type outline and installation dimension
| Model | Outline and installation dimension (mm) | |||||
| A | A1 | B | B1 | C | E | |
| M1-63 type | 117 | 117 | 50 | 75 | 25 | 117 |
| M1-125 type | 132 | 132 | 60 | 95 | 35 | 62 |
| M1-250 type | 144 | 144 | 70 | 105 | 35 | 124 |
| M1-400 type | 224 | 224 | 96 | 144 | 44 | 194 |
| M1-630 type | 234 | 234 | 116 | 174 | 58 | 200 |
| M1-800 type | 243 | 243 | 140 | 210 | 70 | 243 |
Internal and external accessory of circuit breaker
O Internal accessory of circuit breaker
O Undervoltage release
When the voltage drops (even slowly) to the range of 70% and 35% of the rated voltage, the undervoltage release should reliably trip the circuit breaker; when the supply voltage of the undervoltage release is lower than 35% of the release voltage, the undervoltage release should be able to prevent the circuit breaker from closing; when the supply voltage is equal to or greater than 85%, it should be ensured that the circuit breaker is closed.
Tips: The circuit breaker equipped with undervoltage release can only open and close normally when the under voltage passes through the rated voltage.
| Code | A2 | A4 | D1 | D2 |
|---|---|---|---|---|
| Voltage specification | AC230V | AC400V | DC110V | DC220V |
| Rated frequency | 50Hz | 50Hz | / | / |
Shunt release
The circuit breaker can reliably open under rated voltage of 70% to 110%. Rated value
| Code | A2 | A4 | D1 | D2 | D3 |
|---|---|---|---|---|---|
| Voltage specification | AC230V | AC400V | DC110V | DC220V | DC24V |
| Rated frequency | 50Hz | 50Hz | / | / | / |
Note: When the voltage specification is DC24V, the rated current reaches 5A±10%.
O Auxiliary contact and alarm contact
| Frame current | Conventional thermal current Ith A | Rated current at AC400V le A | Rated current at DC230V le A |
|---|---|---|---|
| Inm≤225A | 3 | 0.26 | 0.14 |
| Inm≥400A | 6 | 3 | 0.2 |
