KXH2 prepayment watt hour meter circuit breaker series

Application:

KXH2-63 miniature circuit breaker(card type watt hour meter circuit specialized switch, hereinafter referred to as circuit breaker ), apply to circuit of AC 50Hz(Or 60Hz), rated working voltage 230V, rated current till 63A, remote control circuit breaking or automatic signal control breaking, protect circuit overload or short circuit, also can use for circuit infrequent operation or converting. Widely used to assemble with IC card prepaid watt hour meter to control circuit breaking.

This circuit breaker according to GB10963.0,IEC60898-1 criteria, get international advanced technical level.

Model No. and meaning:

Feature:

This circuit breaker have a current protection pole and a ON/OFF neutral pole, and have shunt tripping device(MX), have below features:

1.        ON/OFF neutral pole connect earlier and breaking later than current protect pole.

2.        High rated breaking capacity, can reach 6Ka

3.        Circuit breaker operation mechanism is a energy-storage type tripping-free device, contact chose rapidly, overcome the effect of personal handle operation variable speed, extend product working life,; contact only can stay in ON or OFF status in normal working condition.

4.        Shunt tripping device(MX) consist of controlled silicon and electromagnetic tripping device etc components.

5.        Moulded case and components are made of high flame retardant, high temperature resistant, high impact resistant plastic.

Essential working principle:

Prepaid electric meter control contain prepaid electric meter, switch and testing control circuit etc parts. Switch and testing control circuit are equivalently actuator in this entire control system. According to prepaid electric meter control feature(electric supply switch would be controlled in OFF status when user in insufficient balance; the switch only can be connected when it meets the requirement of electric meter). Prepaid electric meter like a signal source string into the testing control circuit in this entire control circuit, according users prepaid information to control switch status.

Main parameter and technical performance:

Main specification:

1.Rated current:10A,16A,20A,25A,32A,40A,50A,63A

2.Instantaneous tripping curve: C type

3.Short circuit breaking capacity:6000A

Shunt tripping characteristic :

1.Mechanical electric life:

Electric life: 4000 times, cosθ=0.85-0.9

Mechanical life: 6000 times(5000 times of it operated by personal directly, operation frequency In≤25A is 240 times/hour , In＞25A is 120 times/hour;1000 times breaking controlled by shunt tripping device(MX), each interval time ≥3min)

2.Wire connecting:

Suit for connecting guild line ≤25mm², please according to below diagram to choose guide line section area:

Wire connecting drawing:

Overall and installation size:

Ordering instruction:

1.Should indicate when you order it: circuit breaking name, model No.; circuit breaker rated current; circuit breaker instantaneous tripping device type( C type), quantity.

2. Order example:

Client order a circuit breaker KXH2-63 with shunt tripping device(MX), rated current 40A, instantaneous tripping type: C type, quantity 50 sets. Order writing: KXH2-63, C40, 50 sets.

Bimetal:   Actually, it contains three metals iron, copper, cadmium, galvanized. Three metals with different coefficients of thermal expansion, bending cause thermal Pick reflect and making the breaker disconnect. This is the most import parts of the circuit breaker.  The Bimetal is the use of different materials under different breaker amperage.

Coil:  It's the important parts for the reaction of the Magnetic Trip. It's always 9 ring. As a matter of fact, the number of Coil with Different Amperage.For example, 1A reaches over 100 ring, and 63A is used to 56 ring. The Diameter Thickness is also different for Amperage.

Action Contactor(Sliver Point): It's the main point for the Reaction of Trip. Under normal conditions, keeping closed. When overload and short circuit, It will be breaking.

Arc Chute: Playing a role in destroying the arc. Generally tend to produce a large number of Moving and Static Contactor from the contactor, arc, even emerge spark.