1. Scope of application

The design of CNSX series of MCCB reflects the latest current limiting principle and manufacturing technology, characterized by compact structures, full modularization, high breaking and zero arcover. Its rated insulation voltage is 750V, suitable for the circuit with AC 50/60Hz, rated operational voltage is 690V and below, and rated working current up to 630A, which will be used for generating infrequent conversion and infrequent startup of the motor. MCCB is equipped with overload, short circuit and under voltage protection devices, so as to protect the circuit and power supply equipment from damage.

2. Detail data

Item No.: CNSX250	Type: Moulded Case	Number of poles: 3P, 4P
Rated insulation voltage(V) Ui: 750	Rated impulse withstand voltage(kV) Uimp: 8	Rated operational voltage(V) Ue: AC50/60Hz, 690V
Suitability for isolation: yes	Rated current(A): 125,160,200,250	Control: Manual   with toggle with direct or extended rotary handle
Installation: fixed	Release type: Thermal Magnetic	Dimensions(mm): 105 X 161 X 86 for 3P                                   140 X 161 X 86 for 4P
Packing:  12 pcs per carton for 3P 8 pcs per carton for 4P	Size of carton(cm): 42.5 X 40 X 24.5 for 3P 40.5 X 29 X 31 for 4P	G.W of carton(KGS): 24 KGS for 3P 21 KGS for 4P
Warranty: 18 months	Service: OEM is available	MOQ: 12 pcs / 8 pcs

3. Working environment

• Altitude belows 2000m;
• Circuit breakers can be used between -25℃ and +70℃. If the temperatures are higher than 40℃(65℃ for circuit breaker used to protect motor feeders), devices must be derated;
• It can withstand the impact from humid air, salt spray, oil mist and mold;
• It should be installed in places with no danger of explosion, no conductive dust, and no substance enough to corrode metal or damage the insulation;
• It should be installed in places with no rain and snow erosion;