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M1 Series

Short Description:

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 breaker has overload short circuit and undervoltage

protection device, which can protect the circuit and power equipment from damage. The

circuit breaker is classified into four types based on its rated ultimate short-circuit breaking

capacity (Icu): C type (low breaking type), L type (standard type), M type (medium breaking

type) H type (high breaking type).  This circuit breaker has the characteristics of small volume,

high breaking capacity, short arc (zero arc for some specifications) and vibration resistance,

making it an ideal product for land and ship use.


Product Detail

Product Tags

Technical data and performance

Model Rated framecurrent

Inm(A)

Rated currentIn(A) Ratedworking

voltage

Ue(V)

Ratedinsulation

voltage

Ui(V)

Rated ultimateshort-circuit

breaking capacity

Icu (kA) 400V/690V

Rated service short-circuit breaking

capacity

Ics (kA) 400V/690V

Numberof poles Arcingdistance
M1-63 63 6,10,16,25,32,40,50,63 400 690 25* 18* 2 ≤50
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 ≤50
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 ≤50
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 ≤100
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 ≤100
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 ≤100
M1-800H 800 100* 65* 3
M1-1250L 1250 800,1000,1250 400 690 50/10 35/5 3.4 ≤100
M1-1250M 1250 80/10 50/5 3
M1-1600L 1600 1250,1600 400 690 50/10 35/5 3.4 ≤100
M1-1600M 1600 80/10 50/5 3

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