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Home  >> Products >> Low Voltage >> Moulded Case Circuit Breaker >> SM1 Series Moulded Case Circuit Breakers
         
       
 
 
 
 
1. Application
 
SM1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 550 and 800V and used for circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operating current up to 1600A for infrequent changing over and starting of the motors.The products conforms to IEC60947-2 standard.
 
2. Main Technical Specification(table1)
 
Type Rated
current (A)
Polenum-ber Ratedinsui-atingvolt-age(V) Rated
operat-ingvolt-age(V)
Arcing-
over
distance
(mm)
Ultimate
short
circuit
breaking
capacity
(KA)
Servies
short
circuit
breaking
capacity
(KA)
Operation
perform-
ance
Utiliza-tioncat-egory
Load Unload
SM1-63L
(6),10
16,20
25 ,32
40,50
63
3, 4 500V 400V 0 25 18 1500 8500 A
SM1-63M
0 50 35
SM1-100L
(10),16
20,25
32,40
50,63
80,100
800V 0(≤50) 35 22
SM1-100M
0(≤50) 50 35
SM1-100H
0(≤50) 85 50 1000 7000
SM1-225L
100,125
160,180
200,225
≤50 35 22
SM1-225M
≤50 50 35
SM1-225H
≤50 85 50 1000 4000
SM1-400L
225,250
315,350
400
≤50 50 35
SM1-400M
≤100 65 42
SM1-630L
400,500
630
≤100 50 35
SM1-630M
≤100 65 42
SM1-630H
≤100 100 65
SM1-800M
630,700
800
3 ≤100 75 50
SM1-800H
≤100 100 65
SM1-1250M
1000,1250 ≤100 100 65
SM1-1250H
≤100 125 75
SM1-1600M
1600 ≤100 150 80
 
Note: 6A without thermal protection
The N-pole of four-poles breaker is sited at the right side of the product has four types:
Type A: Without current trip-lease on N pole which making all the time, not closing and opening with the other three poles.
Type B: Without current trip-release on N pole which closing and opening with the other poles.
Type C: With current trip-release which closing and opening with the other three poles.
Type D: With current trip-release which making all the time not closing and opening with the other three poles.

 

3. Protection Characteristic

 
The thermodynamic release of a circuit breaker provides the feature of inverse time-delay, while the magnetic release is the instantaneous operation as shown on table 2(distribution circuit breaker) and table 3 (motor protection circuit breaker).
 

Table2

 
Rated current of release (A) Thermodynamic release( ambient temperature ) land +40°C marine +45°C Operating current of magnetic release (A)
1.05In(cold state) Inoperative time(h) 1.30In(heat state) Operative time(h)
10≤In≤63 ≥ 1 < 1 10In±20%
63<In≤100 ≥ 2 < 2
100≤In≤800 ≥ 2 < 2 5In±20% 10In±20%
 

Table3

 
Rated current Thermodynamic release ( ambient temperature ) land +40°C marine +45°C Operating current of magnetic release (A)
of release (A) 1.0In(cold state) non-trip time(h) 1.20In(heat state) trip time (h) 1.50In(heat state) trip time (h) 7.2In(cold state) trip time(h)
10 ≤ In ≤ 225 ≥ 2 <2 ≤ 4min 4s < Tp ≤ 10s 12In±20%
225 ≤ In ≤ 630 ≤ 8min 6s < Tp ≤ 20s
 

4. Accessories of Circuit breaker

 

4.1 The external accessories of the breaker
Motor-driven operation device
1) Wiring diagram of type CDM electromagnetic operation device(fitting AM1-63,100,225) seethe following drawing (wiring diagram of the external accessories of the breaker in the dotted frame)

 
Code description: SB1 SB2 stand for push button.(provided by users themselves) Number "1" "2" "3" stand for number of wiring terminals.
Voltage rating: AC50Hz 230V 400V DC 220V
2) Wiring diagram of type CD motor-driven operation device (fitting SM1-400 630 800) seebelows (wiring diagram of the external accessories of the breaker in the dotted frame)
 
 

Code description: SB1 SB2 stand for push button. (provided by users themselves) "X" stands for line connection terminals
Voltage rating: AC50Hz 230V 400V DC 220V

 

Rotary handle operation device
The mechanism is used in moulded case circuit breaker to operate the draw-out panel. Powerdistribution panel and supply box outside the panel by turning the handle ,and to ensure thedoor of panel would not be openned when the breaker being on. The hand-drive mechanism can be equiped with two types of operation, one is "A" modelsquare handle , the other is "B" model round handle.

 
 

4.2 Release pattern and accessories code

 
 

SHT: Shunt release; UVR: Under-voltage release;AX: Auxiliary contact; AL: Alarm contact

 
Release patternand accessories code Name/Type SM1-63,
100, 225
SM1-400 SM1-630 SM1-800
200, 300 No accessories 200: magnetic release (only short circuit protection)300: thermal magnetic release(both overload and short circuit protection)
208, 308 Alarm contact
210, 310 Shunt release
220, 320 Auxiliary contact
230, 330 Under-voltage release
240, 340 Shunt release
Auxiliary contact
250, 350 Shunt release
Under-voltage release
260, 360 Two group of auxiliary contact
270,370 Under-voltage release
Auxiliary contact
218, 318 Shunt release
Alarm contact
228, 328 Alarm contact Auxiliary contact
238, 338 Under-voltage releaseAlarm contact
248, 348 Shunt release, Alarm contact,Auxiliary contact
268, 368 Two group of auxiliary contact,Alarm contact
278, 378 Shunt release, Alarm contact, Under-voltage release
 

According to user's demands, accessories could lead to direct wire outcoming or line wiringterminals could be added(please mark out in case of making order).

 

Under-voltage release
Wring diagram of the under-voltage module connected externally (the internal accessories inthe dotted frame)Ue: AC50Hz 230V, 400V

 
 

When the operation voltage is 35%~70% of the rated voltage, the under-voltage release shouldmake the breaker trip correctly.When the operation voltage is 85%~110% of the rated voltage, the under-voltage release shouldmake the breaker close.In case of the operation voltage less than 35% of the rated voltage, the under-voltage shouldprevent the breaker from closing.Note: Only the under-voltage release should be energized in advanced, the breaker could berecramped and turned-on, otherwise the breaker will be damaged.

 

Shunt release
Scheme of wiring(the internal accessories in the dotted frame)"K" is the slow motion switch normal-close contact connect the coil in series in the shunt release.It turns-on or turns-off voluntarily as soon as the breaker on or off.

 
 

Voltage rating: AC50Hz 230V or 400V, DC 110V 220VThe shunt release should make the breaker trip reliably when the operation voltage is 70%~110%of the rated control voltage.

 

Alarm contact

The position of the breaker in "off" or "on"
The position of the breaker in "free trip" (alarm) B11 and B12 switch from "close" to "open", statusof B11 and B14 switch from "open" to "close"
 

Auxiliary Contact

When the breaker is in"off" For the breaker with frame current400A and above
For the breaker with frame current225A and below
When the breaker is in"on" When the breaker is in "off", the contacts switch from "close" to "open".When the breaker is in "off",the contacts switch from "open"to close"
 
Type Outline Dimensions(mm)
Front panel connection
W W1 L L1 L2 H H1 H2 H3 H4 C D E F G W2 W3
SM1-63L
76 50 135 170 117 74 92   7 4 85 28.5 48 22 14 100 75
SM1-63M
76 50 135 170 117 82 98.5 28 7 4 85 28.5 48 22 14 100 75
SM1-100L
92 60 150 185 132 68 86 24 7 4 88 35.5 50 22 17.5    
SM1-100M
92 60 150 185 132 86 104 24 7 4 88 35.5 50 22 17.5 122 90
SM1-100H
92 60 150 185 132 86 104 24 7 4 88 35.5 50 22 17.5    
SM1-225L
107 70 165 215 144 86 110 24 5 4 102 31.5 50 22 17    
SM1-225M
107 70 165 215 144 103 127 24 5 4 102 31.5 50 22 17 142 105
SM1-225H
107 70 165 215 144 103 127 24 5 4 102 31.5 50 22 17    
SM1-400L
150 96 257 357 224 105 155 38 8 6 128 64.5 89 65 φ6 198 144
SM1-400M
182 116 270 370 234 110 160 43 8 6 134 70 89 65 φ9    
SM1-630L
182 116 270 370 234 110 160 43 8 6 134 70 89 65 φ9 240 174
SM1-630M
182 116 270 370 234 110 160 43 8 6 134 70 89 65 φ9    
SM1-630H
210 140 280 380 243 106 145 33 30 128              
SM1-800M
210 140 280 380 243 106 145 33 30 128              
SM1-800H
210 140 280 380 243 106 145 33 30 128              
SM1-1250M
210 140 393     200                      
SM1-1250H
210 140 393     200                      
SM1-1600M
210 140 393     200                      
 

Type Outline Dimensions(mm) Installation
Dimensions
Back panel connection Plug-in connection
L4 H5 H6 φD φD1 L5 L6 H7 H8 H9 H10 J K φd1 M A B φd
SM1-63L
117 44 66 8 8 25 117 3.5
SM1-63M
117 44 66 8 8 25 117 3.5
SM1-100L
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-100M
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-100H
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-225L
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-225M
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-225H
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-400L
194 60 120 33 33 169 279 60 83.5 106.5 21 129 60 8.5 M10 44 194 7
SM1-400M
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630L
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630M
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630H
128 70 243 7.2
SM1-800M
128 70 243 7.2
SM1-800H
128 70 243 7.2
SM1-1250M
SM1-1250H
SM1-1600M
 
 
le> SM1-1250H 210 140 393 200 AM1-1600M 210 140 393 200

Type Outline Dimensions(mm) Installation
Dimensions
Back panel connection Plug-in connection
L4 H5 H6 φD φD1 L5 L6 H7 H8 H9 H10 J K φd1 M A B φd
SM1-63L
117 44 66 8 8 25 117 3.5
SM1-63M
117 44 66 8 8 25 117 3.5
SM1-100L
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-100M
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-100H
129 68 108 26 16 92 168 50 62 74 17.5 56 60 6.5 M8 30 129 4.5
SM1-225L
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-225M
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-225H
126 66 110 20 20 94 183 50 69.5 84.5 17.5 54 70 6.5 M8 35 126 5
SM1-400L
194 60 120 33 33 169 279 60 83.5 106.5 21 129 60 8.5 M10 44 194 7
SM1-400M
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630L
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630M
200 65 125 36 36 169 299 60 92 110 21 123 100 8.5 M12 58 200 7
SM1-630H
128 70 243 7.2
SM1-800M
128 70 243 7.2
SM1-800H
128 70 243 7.2
SM1-1250M
SM1-1250H
SM1-1600M
 
 
 
 

 

 

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