MCCB

ELM1 series Moulded Case Circuit Breaker（MCCB）

The ELM1 MCCB complies with IEC 60947-2, offering industrial protection for 63A–1250A applications (models: ELM1-160/250/400/630/1250) in 3P/4P pole configurations with A/D/N-type poles. Key features include 690V insulation voltage, 400V operational voltage (up to 690V), and a high 100kA breaking capacity (ELM1-1250). It integrates thermal-magnetic trips with optional intelligent trips, verified inverse-time protection (≤20s at 7.2In cold). The modular design supports plug-in, motor-driven, or rotary-handle operation, with expandability via shunt releases and auxiliary contacts. Compact, versatile, and reliable, it suits diverse industrial circuit protection needs.

Product Details

Product Descriprion

The ELM1 Series MCCB leverages international advanced technology, fully compliant with IEC 60947-2, and is engineered for industrial power distribution and motor protection. Covering rated currents from 63A to 1250A (models: ELM1-160/200/400/630/800/1250) with 3P/4P configurations (4P includes A/B/C/D N-pole types), it ensures versatile application. Key specs include 690V rated insulation voltage, 400V AC operational voltage (extendable to 690V), and breaking capacity up to 100kA (e.g., ELM1-1250), supporting 50/60Hz AC grids for infrequent circuit switching and motor control.

It integrates thermal-magnetic trip units and optional intelligent trip units for precise over-current protection. Validated performance highlights include inverse-time action (e.g., rapid tripping at 7.2×In under cold conditions), a rated non-trip current of 1.05In (holding ≥2h), and a mandatory trip threshold at 1.30In. Breaking capacity scales with models: base variants (e.g., ELM1-160) deliver 50kA, while advanced models (e.g., ELM1-1250) achieve 100kA@400V.

The series features a highly modular design, supporting plug-in, motor-driven, and rotary-handle operations, with expandability via shunt releases, undervoltage releases, and auxiliary contacts. Its compact structure (dimensions per parameter tables) optimizes panel space, complemented by standardized rail-mount solutions. Globally certified, the ELM1 Series is optimized for industrial switchboards and energy distribution systems, delivering reliable performance across demanding environments.

Application

ELM1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 690V and used for circuit of A.C.50/60Hz, rated operating voltage AC 400V(or below), rated operating current up to 1250A for infrequent changing over and starting of the motors. The products conforms to IEC60947-2 standard.

Product display

Specifications

Model			ELM1-160		ELM1-200									ELM1-63
Number of poles			1		2 L=2									3/4 L=4
Breaking capacity			B	N	B	N			B		N			B	N				S
Rated current of frame size Inm			160(200)		200 200L									63 63L
Rated Current In			12.5,16,20,25,32,40,50,63, 80,100,125,160(200)		12.5,16,20,25,32,40,50 63,80,100,125,160(200)									10,12.5,16,20,25,32, 40,50,63
Rated insulation voltage Ui			500V		500V									400V
Rated operating voltage Ue			230V		400V 230V									400V
Rated current of the N pole			=In		=In									=In
Lcu AC400V/50HZ0-CO (kA) Rated ultimate short-circuit breaking capacity			25	36	25		36		25			36		20		30		50
Icu AC400V/50HZ0-CO (kA) Rated service short-circuit breaking capacity			18.75	27	18.75		27		18.75			27		10		15		37.5
Icm/cos φ lcu AC400V/50HZ0-CO (kA) Rated short-circuit making capacity			40/0.3	135/0.25	40/0.3				135/0.25					40/0.3		135/0.25		105/0.75
Rated remnant current short-circuit making Capacity (l△m)KA/cosφ			-		9/0.5									9/0.5
Rated current of remnant motion l△n (mA)			-		30			50		100			300	30			100			300
Rated current of remnant no-motion l△n (mA)			-		15			25		50			150	15			50			150
Icm(peat) lcu AC400V/50HZ Is Rated short-time withstand current (kA)			-		-									-
Uimp Rated impulse withstand voltage (V)			10000		10000									10000
Dielectric property			2500		2500									2500
Endurance	Total cycles		20000		15000									10000
	Electrical endurance		3000		2500									1500
	Mechanical endurance		17000		12500									8500
lonization distance (mm)			≤30/0		≤30/0									≤30/0
Over current trip unit	Thermal magnetic release		■		■									■
	Intelligent trip unit		-		-									-
Utilization category	Main circuit		A/O		A/O									A/O
	Auxiliary circuit		AC-15		AC-15									AC-15
Outine dimensions	W (mm)	3P	30(1P)		60(2P)									76
		4P	-		- 60(2P)									101 101
	L (mm)	3P	120		120									120
		4P	-		- 155									120 155
	H (mm)	3P	70		70									70
		4P	-		- 70									70 70
Weight	Fixed version	3P/4P	0.92/1.3		0.92/1.3 -									0.92/1.3 -
	Plug-in version	3P/4P	-		- -									1.2/1.5 -
	Draw-out version	3P/4P	-		- -									- -

Model			ELM1- 125					ELM1- 160						ELM1- 250
Number of poles			3/4 L=4					3/4 L=4						3/4 L=4
Breaking capacity			B	N		S		B	N		S		X	N	S		H	G		X
Rated current of frame size Inm			125 125L					160 160L						250(315)250L						250X
Rated Current In			12.5,16,20,25,32,40,50,63, 80,100,125					32,40,50 63,80,100,125,160					16,20,25,32,40,50 63,80,100,(125)	125,160(180),200(225,250(315)
Rated insulation voltage Ui			400V					690V						690V
Rated operating voltage Ue			400V					400V						400V
Rated current of the N pole			=In					=In						=In
Lcu AC400V/50HZ0-CO (kA) Rated ultimate short-circuit breaking capacity			20	30		50		20	30		50		70	30	50		65	85		200
Icu AC400V/50HZ0-CO (kA) Rated service short-circuit breaking capacity			10	15		37.5		10	15		37.5		70	15	37.5		48.75	51		200
Icm/cos φ lcu AC400V/50HZ0-CO (kA) Rated short-circuit making capacity			40/0.3	73.5/0.25		105/0.25		41/0.3	73.5/0.25		110/0.25		440	77/0.25	114/0.25		143/0.2	178/0.2		440
Rated remnant current short-circuit making Capacity (l△m)KA/cosφ			9/0.5					19/0.5						12/0.3
Rated current of remnant motion l△n (mA)			30		100		300	100		300				100		300			500
Rated current of remnant no-motion l△n (mA)			15		50		150	50		150				50		150			250
Icm(peat) lcu AC400V/50HZ Is Rated short-time withstand current (kA)			-					-						-
Uimp Rated impulse withstand voltage (V)			10000					8000						8000
Dielectric property			2500					3000						3000
Endurance	Total cycles		10000					8000						8000
	Electrical endurance		1500					1000						1000
	Mechanical endurance		8500					7000						7000
lonization distance (mm)			≤30/0					≤30/0※						≤30/0※
Over current trip unit	Thermal magnetic release		■					■						■
	Intelligent trip unit		-					-						-
Utilization category	Main circuit		A/O					A/O						A/B
	Auxiliary circuit		AC-15					AC-15						AC-15
Outine dimensions	W (mm)	3P	76					90				90		105					105
		4P	101 101					120 120				120		140 140					140
	L (mm)	3P	120					120				120		170					254/339①
		4P	120 155					120 120				120		170 210					254/339①
	H (mm)	3P	70					70				70							103.5
		4P	70 70					70 70				70		103.5 103.5					103.5
Weight	Fixed version	3P/4P	0.92/1.3 -					1.2/1.6 -				1.2/1.6		2.7/3.5		41.5/5.5			5
	Plug-in version	3P/4P	1.2/1.5 -					1.4/1.8 -				1.4/1.8		3.2/4.2		4.6/6			8.2
	Draw-out version	3P/4P	- -					- -				-		3.6/4.6		5/6.4			9

Model			ELM1- 40 0									ELM1- 63 0 ELM1- 80 0					ELM1- 125 0 ELM1- 160 0
Number of poles			3/4 L=4									3/4 3/4					3/4
Breaking capacity			N	S		H		G		X	N		S	H	G	X	S	H	G
Rated current of frame size Inm			400(630)							400X	800(630)						1600(1250)
Rated Current In			250,315(350),400,500,630			250,315(350),400				250,315(350),400		400,500,630(700),800				400,500,630	800,1000,631250,1600
Rated insulation voltage Ui			690V									690V				690V	690V
Rated operating voltage Ue			400V									400V				400V	400V
Rated current of the N pole			=In									=In					=In
Lcu AC400V/50HZ0-CO (kA) Rated ultimate short-circuit breaking capacity			35	50		70		85		200	35		50	70	85	200	65	85	100
Icu AC400V/50HZ0-CO (kA) Rated service short-circuit breaking capacity			35	37.5		52.5		52.5		200	35		37.5	52.5	52.5	200	50	50	50
Icm/cos φ lcu AC400V/50HZ0-CO (kA) Rated short-circuit making capacity			70/0.25	110/0.25		154/0.2		187/0.2		400	70/0.25		110/0.25	154/0.2	187/0.2	400	105/0.25	143/0.2	220/0.2
Rated remnant current short-circuit making Capacity (l△m)KA/cosφ			19/0.5
Rated current of remnant motion l△n (mA)			100		300		500		1000
Rated current of remnant no-motion l△n (mA)			50		150		250		500
Icm(peat) lcu AC400V/50HZ Is Rated short-time withstand current (kA)			-									10					20
Uimp Rated impulse withstand voltage (V)			8000									8000					8000
Dielectric property			3000									3000					3000
Endurance	Total cycles		8000									5000					3000
	Electrical endurance		1000									1000					500
	Mechanical endurance		4000									4000					2500
lonization distance (mm)			≤60/0※									≤80/0※					≤80/0※
Over current trip unit	Thermal magnetic release		■									■					■
	Intelligent trip unit		-									■					■
Utilization category	Main circuit		A/B									A/B					A/B
	Auxiliary circuit		AC-15									AC-15					AC-15
Outine dimensions	W (mm)	3P	140						140			210				406	210
		4P	184						184			280				406	280
	L (mm)	3P	254						360			268				103.5	406
		4P	254						360			268				103.5	406
	H (mm)	3P	103.5						103.5			103.5				15	138.5
		4P	103.5						103.5			103.5				-	138.5
Weight	Fixed version	3P/4P	5.1/7.1						5			9.6/12.5				25.4			17.2/22.2
	Plug-in version	3P/4P	6.5/8.5						8.2			-							-
	Draw-out version	3P/4P	6.5/8.5						9			12.2/15.3							22/30.1