Low Voltage Intelligent Universal Circuit Breaker

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: HKW2000/
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: ACB
• Poles Number: 3
• Type: Circuit Breaker
• Function: Circuit-Breaker Failure Protection, RCCB
• Certification: ISO9001-2000, CCC
• Rated Voltage: 0.4 Kv
• Current: 400A-6300A
• Mechanism: Spring
• Frequency Withstand Voltage 5 Min: 0.4kv
• Lighting Impulse Withstand Voltage: 5kv
• Life Time: 20000 Times
• Transport Package: Wooden
• Specification: 2000
• Trademark: qiupu
• Origin: Cn
• HS Code: 8538900000
• Production Capacity: 500000PCS/Year
• Package Size: 35.00cm * 35.00cm * 40.00cm
• Package Gross Weight: 80.000kg

Product Description

           Different load should choose different types of circuit breakers the most common load distribution lines, motors and household and similar household (lighting, household appliances, etc.) three categories. Accordingly, there are distribution protection type, motor protection type and household and similar household protection type circuit breakers. The protective properties and characteristics of these three types of circuit breakers are different. For distribution circuit breakers, there are Class A and Class B: Class A is non-selective, class B is selective. The so-called selective type refers to the circuit breaker with overload long delay, short-circuit short delay and short-circuit instantaneous three-section protection characteristics. Most of the DW15 series, DW17(ME) series, AH series and DW40, DW45 series of universal (also called frame type) circuit breakers are B-type, however, DZ5, DZ15, DZ20, TO, TG, CM1, TM30 and HSM1 series and some specifications of Universal DW15, DW17 only have two-stage protection of overload long-delay and short-circuit instantaneous, they are non-selective class A circuit breakers. Selective protection, as shown in Figure 1. When the f-point is short-circuited, only the QF2 circuit breaker near the f-point acts, while the QF1 circuit breaker in the upper position does not, this is known as selective protection (keeping power on the QF3 and QF4 branches that are not malfunctioning because QF1 does not act) . If QF2 and QF1 are Class A circuit breakers, a short circuit will occur at F point. When the short circuit current reaches a certain value, QF1 and QF2 will act at the same time, and the circuit of QF1 circuit breaker and its branches will all be out of power, it's not selective protection. The reason for selective protection is that QF1 is a class B circuit breaker with short-circuit short-delay performance. When f-point is short-circuit, short-circuit current flows through QF2 branch and QF1 circuit, qF2 instantaneous action release action .

Item			Technical data
Rated voltage (KV)			3.6		7.2		12			24		40.5
Rated frequency(Hz)			50
Insulator(capacity)	insulating	Frequency withstand voltage 5 min (KV)	25	32		42		68			100
		Frequency withstand voltage 1 min (V)	2000
		Lighting impulse withstand voltage (KV)	40	60		75			125				185
		Local discharge (pc)	≤10
	Dispute bend (N)		≥1000