GLBM1L Molded Case Leakage Circuit Breaker
Short Description:
GLBM1L series earth leakage circuit breaker areone of the new type earth leakage breakers which have been developed by thecompany using international advanced design and manufacturing technology.Suitable for a line of AC50Hz/60Hz, rated voltage up to 400V, rated current 16Ato 630A. and is acted as infrequent changeover of circuit or infrequentstarting of motor. The breaker has overload, short-circuit and under-voltageprotective function, which can protect the circuit and the power equipmentagainst damage, meanwhile, it can provide protection to these fire dangers thatcaused by these long-time existed grounding fault that can not be detected bythe over-current protection.
Detail
1.Application
GLBM1L series earth leakage circuit breaker areone of the new type earth leakage breakers which have been developed by thecompany using international advanced design and manufacturing technology.Suitable for a line of AC50Hz/60Hz, rated voltage up to 400V, rated current 16Ato 630A. and is acted as infrequent changeover of circuit or infrequentstarting of motor. The breaker has overload, short-circuit and under-voltageprotective function, which can protect the circuit and the power equipmentagainst damage, meanwhile, it can provide protection to these fire dangers thatcaused by these long-time existed grounding fault that can not be detected bythe over-current protection.
This breaker can be installed vertically(upright) or horizontally(transverse).
Wiring of the breaker can not be in adverse direction, that means power supplyline must be connected to terminal 1,3 and 5,and the load line connected toterminal 2,4 and 6.
The rated residual operating current I△n and the maximum breaking time can beadjusted on site according to practical condition.
The leakage protection module still can work normally when the phase voltagereduce to 50V. It has the same overall size with the GLBM1 series breakers, whichmake the installation more exchangeable.
The breakers are suitable for isolation, its symbol are:
| Type | GLBM1L-100 | GLBM1L-225 | GLBM1L-400 | GLBM1L-630 | |||||||
| Frame Current Inm(A) | 100 | 225 | 400 | 630 | |||||||
| Rated current In(A) | (10)16,20,25,32,40,50,63,80,100 | 100,125,160,180,200,225 | 225,250,315,350,400 | 400,500,630 | |||||||
| Pole Number | 3 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | |||
| Rated Insulation Voltage Ui(V) | AC800 | ||||||||||
| Rated Working voltage Ue(V) | AC 400V | ||||||||||
| Rated impulse with stand voltage Uimp(V) | 8000 | ||||||||||
| Arc-over Distance(mm) | >50 | ||||||||||
| Breaking capacity grade | M | H | M | H | M | M | |||||
| Limiting short-circuit breaking capacity lcu (kA) | AC400V | 50 | 85 | 50 | 50 | 85 | 50 | 65 | 65 | ||
| Service short-circuit breaking capacity lcs(kA) | AC400V | 35 | 50 | 35 | 35 | 50 | 35 | 42 | 42 | ||
| Rated residual operating current I △ n(mA) | Non-delay type | 100/300/500 | |||||||||
| Delay type | 100/300/500 | 300/500/1000 | |||||||||
| Rated residual non operating current I △no(mA) | 1/2 I △ n | ||||||||||
| Operation performance (time) | Electrified | 1500 | 1000 | 1000 | 1000 | ||||||
| Unelectrified | 8500 | 7000 | 4000 | 4000 | |||||||
Note: According to the pole number of product, it classifies three and fourpoles. The neutral pole (N-Pole) of the four-poles products has four types:
Type A: N-pole without over-current release unit, it has been connected all thetime, not closing and opening with the other three poles.
Type B: N-pole without over-current release unit, which closing and openingwith the other three poles.
Type C: N-pole fixed with over-current release unit, which closing and openingwith the other three poles.
Type D: N-pole fixed with over-current release unit, it has been connected allthe time, not closing and opening with the other three poles.
1. The limiting breaking and arc-over distance includes horizontal and verticalinstallation.
2. If the three-pole breaker of this series is connected with three phase load,the load can not have neutral line, otherwise the breaker will have faultaction.
3. If the three-pole breaker of this series is connected with single phaseload, the phase line willbe connected to the left pole, and the neutral line isconnected to the right pole, the middle pole is blanket
3. ProtectionCharacteristic
The thermal release of the breaker has again-time-limit property; theelectromagnetic release is inst. Operation, its property see table 2(fordistribution),table 3 (motor protection).
| Rated current of Release(A) | Thermal release (ambient temperature+40oC) | Electromagnetic release operating current(A) | |
| 1.05In(cold state ) non-operating time (h) | 1.03In(hot state) acting time (h) | ||
| 10 ≤ In ≤ 63 | 1 | 1 | 10In±20% |
| 63 ≤ In ≤ 125 | 2 | 2 | |
| 125 ≤ In ≤ 630 | 2 | 2 | 5In±20% 10In±20% |
| Rated current of Release | Thermal release (ambient temperature +40oC) | Electromagnetic Release operating current(A) | |||
| 1.0In (cold state) non-operating time(h) | 1.20In(hot state) acting time(h) | 1.50In(thermal state) operating time | 7.2In(cold state) operating time | ||
| 10≤In≤400 | 2 | 2 | 8min | 6s < TP ≤ 20S | 12In±20% |
