CQM5E series Electronic Molded Case Circuit Breaker

Overview and applications

1.Wide application range

2.Smart communication capability

3.Multi-protection functions

4.Flexible upgradeability

Scope of application and use

CQM5E series electronic molded case circuit breaker (hereinafter referred to as circuit breaker) is suitable for the circuit of AC 50Hz/60Hz, rated voltage to AC690V, rated current to 800A, generally used for distribution protection and also can be used as motor protection. Under normal circumstances, the circuit breaker can be used for the infrequent circuit conversion and the infrequent motor startup. The communication function module can be added on CQM5E circuit breaker, so that the circuit breaker is upgraded to communication type circuit breaker and achieve the "four remote" function, that is, remote control, remote adjustment, remote test,remote message. The circuit breaker provides overload, short-circuit grounding protection and under voltage protection to protect circuits and power supplies from damage.

Structural characteristics

1.The circuit breaker can be rated into M type (higherbreaking type) and H type(high breaking type) according to their rated ultimate short circuit breaking capacity (Icu) grade. It has the advantages of small size, high breaking ability, short flash over distance and anti-vibration.

2.The circuit breaker can be installed quickly withpatterned accessories, and the accessories can be added timely according to the user's on-site requirements.

Execution standard

1.GB/T14048.1-2012 Low voltage switchgear and controlgear Part 1 General

2.GB/T14048.2-2020 Low-voltage switchgear and controlgear Part 2 Circuit breakers

3.IEC 60947-1 Low-voltage switchgear and controlgear-Part1:General rules

4.IEC 60947-2 Low-voltage switchgear and controlgear-Part2:Circuit-breakers

Model and meaning

1.CQ: Enterprise code (Zhejiang Chuangqi Electric Co., LTD.)

2.M: Molded case circuit breaker

3.5: Design number

4.E:Derived code-electronic

5.125: Rated current of frame grade (A);125/250/400/630/800

6.M: Rated ultimate short-circuit breaking capacity class (M-higher fault type;H-High score fault type)

7. □: Operation mode code (no code-manual direct operation, Z-rotating handle operation,P-electric operation)

8.□:Function derived code (no code-basic intelligent trip,G-grounding protection intelligent trip

T- communication intelligent trip, GT -grounding protection communication intelligent trip)

9. 4: Pole number code (3-tripole,4-quadrupole)

10. 300: Trip type and accessories code;3:three-stage protection; 00: No accessories (see attachment table for specfic accessories code)

11. □:Usage code (no code-distribution type, 2-motor protection type）

12. B: N-pole type of 4P products(type A, B, C, D, no code for 3-pole products)

Type A: N pole is always connected and no over current release is installed;

Type B: N pole breaks together with other poles and no over current release is installed;

Type C: N pole breaks with other poles and over current release is installed;

Type D: N pole is always connected and over current release is installed.

13. □: Special functioncode (I:overload alarm with non-trip function)

14. □: Rated current In(32/63/125/250/400/630/800)

15.□:Wiring modecode (no code-board front wiring, B-board rear wiring, C-plug-in)

Technical parameters

Specifications		CQM5E-125			CQM5E-250			CQM5E-400			CQM5E-630			CQM5E-800
Rated current In(A),40℃		32	63	125	250			400			630			800
Setting current Ir(A),40℃		16/20/ 25/32	32/40/ 50/63	63/80/ 100/125	100/125/140/ 160/180/200/ 225/250			200/225/250/ 280/315/350/ 400			400/420/440/ 460/480/500/ 530/560/600/ 630			630/640/660/ 680/700/720/ 740/760/780/ 800
Rated operating voltage Ue（V）		AC380/400/415			AC380/400/415			AC380/400/415			AC380/400/415			AC380/400/415
		AC660/690			AC660/690			AC660/690			AC660/690			AC660/690
Phase spacing(mm)		30			35			48			70			70
Outline dimensions	Length	155			165			257			280			280
	wide (3P/4P)	90/120			105/140			150/198			210/280			210/280
	Height(M/H type)	90			103			104.5			112			112
Rated insulation voltage Ui(V)		1000			1000			1000			1000			1000
Rated impulse withstand voltage Uimp(kV)		8			8			8			8			8
Tripping type		Electronic type			Electronic type			Electronic type			Electronic type			Electronic type
Utilization category		A			A			B			B			B
Mechanical life		20000			20000			10000			10000			10000
Electrical life (AC415V)		8000			8000			7000			7000			7000
Poles		3P		4P	3P		4P	3P		4P	3P		4P	3P		4P
Breaking capacity code		M	H	/	M	H	/	M	H	/	M	H	/	M	H	/
Icu (kA)	AC380/400/415V	70	85	70	70	85	70	70	100	70	70	100	70	70	100	70
	AC660/690V	20	/	20	20	/	20	20	/	20	20	/	20	20	/	20
Ics (kA)	AC380/400/415V	50	65	50	50	65	50	70	75	70	70	75	70	70	75	70
	AC660/690V	10	/	10	10	/	10	15	/	15	15	/	15	15	/	15
Rated short-time withstand current Icw		1kA/1s			2.5kA/1s			5kA/1s			10kA/1s			10kA/1s
Flash over distance(mm)		≤50			≤50			≤100			≤100			≤100
Applicable working environment temperature		-35℃~+70℃
Instantaneous protection type	Short time delay protection	Isd= (2-12) Ir
	Instantaneous protection	li= (4-14) Ir

Attached is the code comparison table

Appearance and installation dimensions

Board front wiring dimensions (X-X、Y-Y are the center of 3P circuit breaker)

CQM5E-125 (M、H)

CQM5E-250 (M、H)

CQM5E-400 (M、H)

CQM5E-630/800 (M、H)