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250A Detect Earth Fault Circuit Breaker

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Product Introduction

ZYMM1-250L, this type of residual current circuit breakers RCCB is one of the most safest devices for detecting and preventing the tripping of leakage currents, thus ensuring protection against electric shocks caused by indirect contact. A residual current circuit breaker or RCCB is basically a gadget that induces current and the main purpose of installing a residual current circuit breaker is fundamentally to protect people from electric shock or death.

Yuming Electric’s residual current circuit breaker can be used to distribute electrical energy and to protect lines and power supply equipment from overloads and short circuits, also for infrequent line changes and infrequent motor starts.


Product Parameter

Model

ZYMM1-250L

Rated current In(A)

100,125,140,160,180,200,225,250

Number of poles

3

4

Rated insulation voltage Ui(V)

AC800

Rated working voltage Ue(V)

AC400

Rated impulse withstand voltage Uimp(V)

8000

Arcing distance(mm)

50

Breaking capacity level

L

M

H

Ultimate short-circuit breaking capacity Icu(kA)

AC400V

35

70

85

Operating short-circuit breaking capacity Ics(kA)

AC400V

25

50

65

Rated residual short-circuit switching (breaking) capacity I△m(kA)

8.75

12.5

21

Rated residual action current I△m(mA)

Non-delayed type

30/100/500 100/300/500

Time-delayed type

100/300/500

Rated residual non-action current I△no(mA)

1/2 I△n

Operational performance/times

Electrify

1000

No electricity

7000

Total number of times

8000

Residual current protection action time

2 I△n

Maximum breaking time(S)

Non-delayed type

0.1

Time-delayed type

0.35/1/2


Features & Benefits

A complete range of products and related accessories.

International mark certification for worldwide safety performance.

They can act as the main disconnect switch upstream of any derived MCB (e.g. home consumer unit).

Whenever a fault occurs, it disengages from any low voltage (unbalanced current) circuit.


FAQ

Q:What’s your products’s MOQ?
A:The MOQ differs among different products, for further information, please be free to contact us.We can accept low MOQ.


Q:Why RCCB is better than ELCB?

A:The RCCB is only connected to the phase and neutral wires. the ELCB only detects those electrical faults where leakage current flows through the main earth wire. the RCCB can detect any type of earth fault.


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