800A Earth Leakage Circuit BreakerMCCB Circuit Breaker Performance
Heat Resistant
Application
SZM1LE series residual current circuit breaker(hereinafter referred
to as circuit breaker) is suitablefor distributing network of AC
50Hz, rated voltage 400V, rated current 800A, to make indirect
contactprotection to the human being, also to prevent fireaccident
caused by ground fault current due to thedamage of insulation of
equipment. In addition, it notonly can be used to distribute
electric energy and protect the circuit and power equipment against
overload and short circuit, but also can be used to switch the
circuit or start the motor infrequently. The sampling operational
power supply of leakage protec-tion module of common residual
current circuitbreakers is two phases, but this series of
circuitbreakers is three phases, and if any one of threephases is
lack, this circuit breaker leakage protectionmodule can still work
normally. The rated residualoperation current and max breaking time
may beadjusted according to practical situations.
Providedthat the phase voltage declines to 50V, the
leakageprotection module can still work normally. In addition,this
circuit breaker has function of leakage alarm output.
Using condition
Ambient air temperature: the upper limit of ambient air temperature
shall not exceed +40℃; The average ambient air temperature for 24h
shall not exceed +35℃; The lower limit of ambient air temperature
is not less than -5 ° C.
Installation conditions: it should be installed in a place free
from shock and vibration and rain and snow. The upper terminal is
connected to the power supply side, and the lower terminal is
connected to the load side. The inclination between the upper
terminal and the vertical plane should not exceed 5°.
Main Technical Data
| Type | SZM1LE-160 | SZM1LE-250 | SZM1LE-400 | SZM1LE-630,800 |
| Rated frame current | 160 | 250 | 400 | 800 |
| Rated current | 10 16 20 25 32
40 50 63 80 100 125 | 100 125 140 160 182 200 225 250 | 250 315 350 400 | 400 500 630 700 800 |
|
| Pole | 3 4 | 3 4 | 3 4 | 3 4 |
| Rated insulation Voltage | AC800 |
| Rated Working Voltage | AC400 |
| Rated Impulse withstand voltage | | 8000 | 8000 | 8000 | 8000 |
| Flashover distance | 50 | 50 | 100 | 100 |
| Breaking capacity class | L | M | H | L | M | H | L | M | H | L | M | H |
| Ultimate short-circuit breaking capability | AC400V | 35 | 50 | 85 | 35 | 50 | 85 | 50 | 65 | 100 | 50 | 65 | 100 |
| Service short-circuit breaking capability | AC400V | 22 | 35 | 50 | 22 | 35 | 50 | 30 | 45 | 50 | 30 | 45 | 50 |
| Rated residual making and breaking capability | 8.75 | 12.5 | 21 | 8.75 | 12.5 | 21 | 12.5 | 17.5 | 25 | 12.5 | 17.5 | 25 |
| Rated residual action current | Non-time delay type | 30/100/500 100/300/500 | 30/100/500 100/300/500 | 100/300/500 | 300/500/1000 |
| Time delay type | 100/300/500 | 100/300/500 | 100/300/500 | 300/500/1000 |
| Rated residual non-action current | | 1/2 I Δn | 1/2 I Δn | 1/2 I Δn | 1/2 I Δn |
| Operating performance | Power on | 1500 | 1000 | 1000 | 1000 |
| Power off | 8500 | 7000 | 4000 | 4000 |
| Total times | 10000 | 8000 | 5000 | 5000 |
| Residual current protection operating time | | I Δn | 2 I Δn | 5 I Δn | 10 I Δn |
| Max breaking time | Non-time delay type | 0 | 0 | 0.04 | 0.04 |
| Time delay type | 0.5/1.15/2.15 | 0.35/1/2 | 0.25/0.9/1.9 | 0.25/0.9/1.9 |
External And Installation Size
advantage
Our MCCBs provide you unmatched circuit protection in alternative
energy, commercial, industrial, mining, and military applications
when protecting conductors against overloads and short circuits.
These circuit breakers are applied in panelboards, switchboards,
motor control centers, control panels, combination starters,
individual enclosures, and bus duct plug-in units.
The breakers according to the rated maximal value to short- circuit
breaking ability (Icu), would be classified four kinds types C
(basic type), L (typica1 type), M (second high breaking type) and H
(high breaking type). The breakers are of the following
characteristics: compact size, high breaking ability, short
arc-over distance (some of the "0" arc-over distance) and shake
proof. They also undergo the tests of nuclear industry conditions
(1E grade) and ship conditions, and become the only product using
in nuclear industry base among the same products made in the
country, further more become the ideal products applied on land or
ships.
Matters need attention
Normally, we will provide the most suitable shipment method for
you. If the quantity is few, the goods will be sent by express when
the payment is clear. Also, we can transport the goods by air or by
sea, just according to your demand
profile
Baikong electric was born and developed wellSichuan Baikong
Electrical Technology Co., Ltd is a complete set of high and low
voltage power distribution equipment automation equipment, set
production, research and development and sales Import and export
services and other integrated enterprises, the company is
headquartered in Pengzhou Industrial Park, Chengdu City.The
company's main products are box-type substation Medium and high
voltage power transmission and distribution equipment, low voltage
power distribution equipment, fire electrical equipment,
intelligent industrial electrical equipment, new energy and energy
storage electrical equipment, metering and protection power
distribution equipment, high and low voltage complete switchgear,
high voltage ring network cabinet, cable branch box,SF6 inflatable
cabinet, etc.
