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 CT Moulded case circuit breaker is suitable for circuit AC 50Hz/60Hz,rated voltage up to AC 660V,Rated operating current to 630A.It features normal structure,reliable performance,complete accessories & high break-ing capacity,used for power distribution and protecting the circuit and electrical equipment against overload and short circuit.It complies with standard of IEC947-2.

 

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Rated current of release(A)	Thermodynamic release(ambient temp +40℃)				operational current of magnetic ralease(A)
	1.05In(cold state) in operative time(h)		1.30(heat state) inoperative time(h)
In≤63	≥1		＜1		10-50In±20%
63＜In≤250	≥2		＜2		10In±20%
25＜In≤800	≥2		＜2		5-10In±20%