CTM3E / CTM1E Series Electronic Moulded Case Circuit Breaker-Zhejiang Chengtong Electric Power Technology Co.,Ltd.

Model		CTM1E-250				CTM1E-400(630 Capacity-increased type)					CTM1E-630				CTM1E-800
Frame grade rated current Inm(A)		250				400		630(Capacity-increased type)			630				800(630)
Rated current(adjustable)In(A)		(0.4~1.0)In
Rated working voltage Ue(V)		AC400/690
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		8
Pole		3		4		3			4		3		4		3		4
Rated limit short-circuit breaking capacity class		M	H	M	H	M	H		M	H	M	H	M	H	M	H	M	H
Rated limit short-circuit breaking capacity lcu(kA)		50	85	50	85	65	85		65	85	65	85	65	85	65	85	65	85
Rated running short-circuit breaking capacity lcs(kA)		35	50	35	50	50	50		50	65	50	65	50	65	50	65	50	65
Rated short time withstand current Icw(kA)/1s		5				5					10				10
Overall and dimensions(mm)	L	165				257					270				280
	W	107		142		150			200		182		240		210		280
	H	110				146.5					155				155
	a	35		70		44			88		58		116		70		140
	b	126				194					200				243
	Φ	4.5				7					7				7
Flashover distance(mm)		≤50				≤100					≤100				≤100

Model		CTM3E-125				CTM3E-250				CTM3E-400(630 Capacity-increased type)						CTM3E-630						CTM3E-800						CTM3E-1600
Frame grade rated current Inm(A)		125				250				400		630(Capacity-increased type)				630						800(630)						1600(1250)
Rated current(adjustable)In(A)		(0.4,0.5,0.6,0.7,0.8,0.9,1.0)In
Rated working voltage Ue(V)		AC400/690
Rated insulation voltage Ui(V)		1000
Rated impulse withstand voltage Uimp(kV)		12
Pole		3		4		3		4		3			4			3			4			3			4			3	4
Rated limit short-circuit breaking capacity class		M	H	M	H	M	H	M	H	M	H	R	M	H	R	M	H	R	M	H	R	M	H	R	M	H	R	/
Rated limit short-circuit breaking capacity lcu(kA)		50	85	50	85	50	85	50	85	65	85	100	65	85	100	65	85	100	65	85	00	656	8	510	06	585	100	80
Rated running short-circuit breaking capacity lcs(kA)		35	50	35	50	35	50	35	50	50	65	80	50	65	80	50	65	80	50	65	80	50	65	80	50	65	80	50
Rated short time withstand current Icw(kA)/1s		5				5				5						10						10						20
Overall and dimensions(mm)	L	150				165				257						270						280						340
	W	92		122		107		142		150			200			182			240			210			280			210	280
	H	110				110				146.5						155						155						150.5
	a	30		60		35		70		44			88			58			116			70			140			70
	b	129				126				194						200						243						303
	Φ	4.5				4.5				7						7						7						9
Flashover distance(mm)		≤50				≤50				≤100						≤100						≤100						≤100

Q: Can circuit breaker specifications be customized based on project parameters?

Support customization requirements such as parameter tuning, communication protocol, wiring method, and appearance identification. The R&D team can provide adaptation solutions for engineering drawings.
Q: Can samples and testing reports be provided before procurement?

Samples can be applied for, and a complete set of materials such as third-party testing certificates, high-tech/specialized and new qualification documents, product qualification certificates, etc. can be provided to meet the requirements of bidding and power grid inventory review.
Q: What industries and projects is the product suitable for?

Widely used in industrial and commercial power distribution, photovoltaic new energy, municipal power grid renovation, residential buildings, factory workshops, charging pile supporting facilities, smart parks, old power distribution upgrades and other scenarios.
Q: What products can you offer?

We focus on the research and development, production, sales, and supporting services of intelligent circuit breaker series products.
Q: After we send you the inquiry, how long will it take to receive a response?

We will reply to you within 12 hours after receiving the inquiry on weekdays.

CTM3E / CTM1E Series Electronic Moulded Case Circuit Breaker