HOME » Products » AC Moulded Case Circuit Breaker » Residual Current Circuit Breaker » 630A High Performance Circuit Protection Breaker

630A High Performance Circuit Protection Breaker

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Product Introduction

The residual current circuit breaker (RCCB) is an important safety measure for the protection of electrical circuits. It is a current-sensing device that automatically measures and breaks the circuit whenever a fault occurs in the connected circuit or when the current exceeds the rated sensitivity.

This series of circuit breakers are three phases, if any one phase is missing, the circuit breaker leakage protection mode can still work normally; rated residual action current and maximum disconnection time are adjustable according to the actual situation on site; when the phase voltage is reduced to 550V, the leakage protection module can still work normally.


Product Parameter

Model

ZYMM1-630L

Rated current In(A)

400,500,630

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)

100

Breaking capacity level

M

H

Ultimate short-circuit breaking capacity Icu(kA)

AC400V

70

100

Operating short-circuit breaking capacity Ics(kA)

AC400V

50

65

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

17.5

25

Rated residual action current I△m(mA)

Non-delayed type

300/500/1000

Time-delayed type

300/500/1000

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

1/2 I△n

Operational performance/times

Electrify

1000

No electricity

4000

Total number of times

5000

Residual current protection action time

10 I△n

Maximum breaking time(S)

Non-delayed type

0.04

Time-delayed type

0.25/0.9/1.9


Features & Benefits

Provides protection against voltage fluctuations as it includes a filter against transient voltage levels.

Automatic circuit break when rated sensitivity is exceeded.

This type is very effective types of protection against shock.


FAQ

Q:How many RCCB is required for a house?

A:In general, 60ma and 100mA are installed in most houses to provide a balance between no obvious faults and genuine faults.


Q:What does RCCB protect?

A:The RCCB is particularly useful in the event of a sudden earth fault, where the circuit will immediately trip, thus protecting people from electric shocks.

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