HOME » PRODUCTS » AC Moulded Case Circuit Breaker » Residual Current Circuit Breaker » 400A Residual Current Circuit Breaker for Electrical Equipment

400A Residual Current Circuit Breaker for Electrical Equipment

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Product Introduction

ZYMM1-400L covers rated current of 225A, 250A, 315A, 350A and 400A, rated insulation voltage of Ac 800V, rated working voltage of AC 400V, rated impulse withstand voltage of 8000V, Flying arc distance of 100mm.We provide variable choice about the material(copper point, composite point, silver point and full silver point).

Although electricity has become an integral part of our lives, the fact is that it can also be dangerous to human life and property. Electrocution and fire are the two main risks associated with electricity and one cannot afford to be negligent when it comes to insulated equipment. Yuming Electric’s residual case circuit breaker is designed to detect and trip leakage currents, thus ensuring protection against electric shocks caused by indirect contact.


Product Parameter

Model

ZYMM1-400L

Rated current In(A)

225,250,315,350,400

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

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

4000

Total number of times

5000

Residual current protection action time

5 I△n

Maximum breaking time(S)

Non-delayed type

0.04

Time-delayed type

0.25/0.9/1.9


Features & Benefits

◆ The RCCB circuit breaker is designed to protect against the dangers of electric shock, electric shock and fire caused by ground faults or faulty wiring.

◆ Provides protection against earth faults and any leakage currents.


FAQ

Q:What is inside RCCB?
A:The RCCB consists of a CBCT (core balancing current transformer), relay operating coil, incoming and outgoing terminals, tripping mechanism, ON/OFF handle and test switch.


Q:How is your quality of products?

A:Our production strictly follows the ISO9001 quality management system.

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