EKM8 Thermo-magnetic Moulded Case Circuit Breaker

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Ambient and Installation Conditions

● Altitude up to 2000m;
● Ambient medium temperature should be within -5℃ to +40℃ (+45℃ for marine products);
● It can withstand the effect of damp air;
● It can withstand the effect of moulds;
● It can withstand the effect of nuclear radiation;
● The max inclination is 22.5℃.
● It still can work reliably when the ship subjects to normal vibration;
● It can still work reliably if the product subjects to the earthquake (4g).
● Places where the surrounding medium is free from explosion danger, and far away from gas or conductive dust that would erode the metal or destroy the insulation;
● Keep away from rain or snow.

Components of Circuit Breaker

ekm8 thermo magnetic moulded case circuit breaker 1

Product Selection Guide

ekm8 thermo magnetic moulded case circuit breaker 11

300	125A		2	A
Release type and internal accessory	Rated current (A)		Application	Code of four-pole product
The first digit represents release type 2: Has instantaneous release only 3: Complex release Note: Later two digits are the code of accessories (see accessory table)	125	10, 16, 20, 25, 32, 40, 50，63, 80, 100, 125	1: power distribution 2: motor protection	A: N-pole without protection cannot close or open B: N-pole without protection can close and open C: N-pole with protection can close and open D: N-pole with protection cannot close or open
	160	63, 80, 100, 125, 140, 160
	250	100, 125, 140, 160，180, 200, 225, 250
	400	250, 300, 315, 350, 400
	630	400, 500, 630
	800	500, 630, 700, 800

Q1			D1		Q	2
Accessory voltage			Electric operation voltage		Installation methods	Install wiring board or not
Undervoltage release	Shunt release	Auxiliary alarm	DC1 Electric Operation	DC3 Electric Operation	Q: Front-board H: Back-board C: Plug-in type	1: No 2: Yes
Q1: AC220V	F1: AC220V	J1: AC125V	D1: AC220V	D5: AC230V
Q2: AC240V	F2: AC380V	J2: AC250V	D2: AC230V	D6: AC110V
Q3: AC380V	F3: DC110V	J3: DC125V	D3: AC380V	D7: DC220
Q4: AC415V	F4: DC24V	J4: DC24V	D4: AC400V	D8: DC110
				D9: AC110-240V
				D10: DC100-220V
			Note: Adaptable voltages for two electric operations. Please refer to the introduction of external accessory.

Main Performance Indexes

Frame current (A)		125		160
Model		EKM8-125S	EKM8-125H	EKM8-160S	EKM8-160M	EKM8-160H
Pole number		1, 2, 3, 4		2, 3, 4

Rated current (A)		10, 16, 20, 32, 25, 40, 50,63, 80, 100, 125		63, 80, 100, 125, 140, 160
Rated voltage (V)		AC400V		AC400V
Rated insulation voltage (V)		AC1000V		AC1000V
Short-circuit breaking capacity(KA)Icu/Ics	AC400V	25/18	35/25	25/18	35/25	50/35
Operating cycle number	Electrical life	6000		3000
	Mechanical life	9000		7000
Outline dim(mm) a-b-c-ca	1P	25-130-68-90		-	-	-
	2P	50-130-68-90		60-155-68-90	60-155-68-90	60-155-88-115
	3P	75-130-68-90		90-155-68-90	90-155-68-90	90-155-88-115
	4P	100-130-68-90		120-155-68-90	120-155-68-90	120-155-88-115
Weight (kg)	1P	0.32	-	-		-
	2P	0.5	0.55	1		1.1
	3P	0.55	0.65	1.1		1.2
	4P	0.65	0.8	1.4		1.5
Electric operating device (MD)		●
External driving operating handle		●
Automatic release		Thermal electromagnetic type

Frame current (A)		250			400
Model		EKM8-250S	EKM8-250M	EKM8-250H	EKM8-400S	EKM8-400M	EKM8-400H
Pole number		3, 4			3, 4

Rated current (A)		100, 125, 140, 160, 180,200, 225, 250			250，315，350，400
Rated voltage (V)		AC400V			AC400V
Rated insulation voltage (V)		AC1000V			AC1000V
Short-circuit breaking capacity(KA)Icu/Ics	AC400V	25/18	35/25	50/35	35/25	50/35	65/65
Operating cycle number	Electrical life	3000			2000
	Mechanical life	7000			4000
Outline dim(mm) a-b-c-ca
	3P	105-165-68-92		105-165-88-115	140-257-103-155
	4P	140-165-68-92		140-165-88-115	184-257-103-155

Weight (kg)
	2P	1.5		1.7	5.5
	3P	1.9		2.1	7

Electric operating device (MD)		●
External driving operating handle		●
Automatic release		Thermal electromagnetic type

Frame current (A)		630			800
Model		EKM8-630S	EKM8-630M	EKM8-630H	EKM8-800S	EKM8-800M	EKM8-800H
Pole number		3, 4			3, 4

Rated current (A)		250, 315, 350, 400, 500, 630			500, 630, 700, 800
Rated voltage (V)		AC400V			AC400V
Rated insulation voltage (V)		AC1000V			AC1000V
Short-circuit breaking capacity(KA)Icu/Ics	AC400V	35/25	50/35	65/65	35/25	50/35	65/65
Operating cycle number	Electrical life	2000			1500
	Mechanical life	4000			4000
Outline dim(mm) a-b-c-ca
	3P	140-257-103-155			210-275-103-155
	4P	184-257-103-155			280-275-103-155

Weight (kg)
	2P	5.7			9.5
	3P	7.5			12.5

Electric operating device (MD)		●
External driving operating handle		●
Automatic release		Thermal electromagnetic type

EKM8	125	C				P	4
Product code	Frame size	Current class				Code of control circuit source voltage	Pole number
Moulded-case circuit breaker	125 160 250 400 630 800 Note: 125 is upgraded type of 63 frame 160 is upgraded type of 100 frame 250 is upgraded type of 225 frame 630 is upgraded type of 400 frame		S	M	H	P: electric operation Z: rotary handle W: direct operation	3: 3-pole 4: 4-pole
		125	25/18	-1.4	35/25
		160	25/18		50/35
		250	25/18	35/25	50/35
		400	35/25	50/35	65/65
		630	35/25	50/35	65/65
		800	35/25	50/35	65/65

ekm8 thermo magnetic moulded case circuit breaker 12

Changan Group Co.,Ltd

Add:No.288 Wei 17th Road, Yueqing Economic Development Zone, Yueqing, Wenzhou, Zhejiang Province, P.R.China
Tel:+ 0086-577-62763666 62760888
Fax:+0086-577-62774090
Website:https://www.changanelectric.com
Email:sales@changangroup.com.cn

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