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Applicable Rang:
　 SAM7 series moulde case circuit breaker is designed for power distribution netnorks with AC 50/60Hz, rated current 800A, rated work voltage 690V and rated insulation voltage 690V. It is used to non-frequent making and breaking operation under normal conditions for overload and short-circuit protection. The circuit breaker with rated frame class current less than and including 400A can be used in the squirrel cage type motor for non frequent starting, breaking in operation, and it also can provide overload, short-circuit and under-voltage protections for motor.

Applicable Standards:
International standard:
IEC 60947-1 Low-voltage switchgear and controlgear-General
IEC 60947-2 Low-voltage switchgear and controlgear-Low-voltage circuit breaker

Normal Usage and Mounting Conditions:
a) Ambient temperature
The breaker can work at ambient temperature from -5℃ to +40℃(except special demand);
b) Altitude
The circuit breaker can work normally at altitude within 2000m;
c) Class of pollution
The class of pollution where it is installed is Class 3;
d) Mounting type
The circuit breaker is Type III;
e) Mounting position
The circuit breaker can be installed vertically, horizontally or flatly, which will not decrease its electric characteristics;
f) Environmental protection
Environmental factors are adequately considered in the design of circuit breaker, with many recoverable and degradable materials.

Table 1 Installation Types and Codes of Accessories:
Main Technical Data:
Model SAM7-125 SAM7-160
Poles 3P,4P 3P,4P
Sort A A
Rated current ln A 12.5,16,20
32,40,50,63
80,100,125		 16,20,32,40
50,63,80,100
125,160
Rated frequency Hz 50/60 50/60
Rated operating
voltage Ue		 V 400,690 400,690
Rated isolating
voltage Ui		 V 690 690
Rated impulse withstand
voltage Uimp		 V 6000 8000
Class of breaking
capacity		 L M H L M H
Rated limit short-circuit
breaking capacity lcu(O+CO)		 400V KA 25 35 50 35 50 65
690V KA 8 10 15 10 15 25
Rated operate short-circuit
breaking capacity lcm(O+CO+CO)		 400V KA 15 20 25 20 25 40
690V KA - - - - - -
Rated short-circuit
making capacity lcm		 400V KA 52.5 74 105 74 105 137
690V KA - - - - - -
Frequency of
operation cycles		 perhour time 120 120
making current time 3000 3000
No making time 7000 7000
Conventional non-tripping
current lnt		 1.051n h 1(ln≤63A),2(ln>63A)
Conventional tripping
current lt		 1.31n h 1(ln≤63A),2(ln>63A)
Power consumption fixed W 25 30 30 30 40 40
flug-in W 30 40 40 40 50 50
Outline dimension
L×M×H		 3P mm 120×78×75.5(for M,H type, H is 85) 120×90×75.5(Height for type M,H87.5)
4P mm 120×103×75.5 120×120×75.5
Weight 3P kg 0.8 1.0 1.0 1.0 1.2 1.2
4P kg 1.1 - - 1.4 - -

SAM7-250 SAM7-400 SAM7-800
3P,4P 3P,4P 3P,4P
A A A
100,125,160,180
200,225,250		 200,225,250
315,350,400		 400,500,630,700,800
50/60 50/60 50/60
400,690 400,690 400,690
690 690 690
6000 6000 6000
L M H L M H L M H
35 50 65 35 50 65 50 65 80
10 15 20 10 20 25 20 25 30
20 25 35 20 25 45 30 45 60
- - - - - - - - -
74 105 137 74 105 137 105 137 168
- - - - - - - - -
120 60 60
2000 1000 1000
6000 4000 4000
2(ln>63A)
2(ln>63A)
50 50 65 60 60 80 135 135 150
65 65 80 90 90 100 150 150 220
170×105×111 225×140×111 268.5×210×111
170×140×111 225×184×111 268.5×280×111
2.5 2.5 2.5 5.5 5.5 5.5 10.0 10.0 10.0
3.4 - - 7.4 - - 1.25 - -

Over-current Characteristic Curve:

Electric Accessories:

Outline and Installation Dimension:

Plug-in type, Fixed type, for back wiring diagram:

Safe Distance:

YUEQING LEYI ELECTRIC CO., LTD.
TEL：0086 577 62578091(5 LINES)  FAX：0086 577 62576780
salzer@salzer-electric.com