| Customization: | Available |
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| Breaking Capacity: | Low Voltage Circuit Breakers |
| Operation: | Manual Type |
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YCM8E Electronic Addjustable Circuit Breaker
General
YCM8E series electronic circuit breakers are applicable for low-voltage power systems of AC 50Hz, rated operating voltage up to 1000V and rated operating current from 16A to 800A.
Ambient and installation conditions
Altitude up to 2000m;
Ambient medium temperature should be within -5ºC to +40ºC (+45ºC for marine products);
It can withstand the effect of damp air;
It can withstand the effect of salt fog or oil mist;
It can withstand the effect of moulds;
It can withstand the effect of nuclear radiation;
The max inclination is 22.5ºC .
It still can work reliably when the ship subjects to normal vibration;
It can still work reliably if the product subjects to the earthquake (4g).
Places where the surrounding medium is free from explosion danger, and far away from gas or conductive dust that would erode the metal or destroy the insulation;
Keep away from rain or snow.
Features
Circuit breaker can be equipped with undervoltage release, shunt release, auxiliary contacts, alarm contacts, electric operating mechanism, rotary operating handle and other accessories.
Circuit breaker has protection functions of overload long delay, short-circuit short delay and short-circuit instantaneous protection, the user can set the required protection characteristics (user only needs to operate the DIP switch for settings of protection function parameters).
Circuit breaker has ground fault and thermal analog protection functions, pre-alarm indication over-current indication, load current indication, digital current analysis technology, and it can achieve a higher level of protection.
| Product Code | Adjustable Type | Code of frame size current | Code of operating mode |
| YCM8 moulded case circuit breaker |
E E: electronic adjustable |
160 | P |
| nm=160 lnm=250 lnm=400 lnm=800 | P: electric operation Z : rotary handle W: direct operation Electric operation DC1, DC2, DC3 |
| Pole Number | Code of Release Type and Internal Accessory | Application |
| 3 3: three poles 4: four poles |
400 2: intelligent release Accessory code, see accessory table |
2 |
| 1: for distribution 2: for protecting the motor |
| Code of Four-pole Product |
| A |
| A: N-pole without protection, cannot close or open B: N-pole without protection, can close and open C: N-pole with protection, can close and open D: N-pole with protection, cannot close or open |
| Frame Current(A) | 160 | 250 | 400 | 630 | 800 | |
| Type | YCM8E-160H |
YCM8E-250H |
YCM8E-400H |
YCM8E-630H |
YCM8E-800H YCM8E-1000H YCM8E-1250H | |
| Pole number | 3,4 | 3,4 | 3,4 | 3,4 | 3,4 | |
| Rated Current (A) | 12-32, 25-63, 40-100,63-160 |
100-250 |
200-400 |
400-630 |
400-630, 500-800, 630-1000, 850-1250 |
|
| Rated voltage (V) | AC400V | AC400V | AC400V | AC400V | AC400V | |
| Rated insulation voltage (V) | AC1000V | AC1000V | AC1000V | AC1000V | AC1000V | |
| Short Circuit Breaking Capacity (kA) Icu/Ics |
AC400V |
35/25 |
35/25 |
50/35 |
50/35 |
50/35 |
Operating Circle Times |
Charged ON | 1500 | 1000 | 1000 | 1000 | 1000 |
| Not charged OFF |
7000 | 7000 | 4000 | 4000 | 4000 | |
| Dimension(mm) a-b-c-ca | 3P |
90-155-88-115 |
105-165-88-115 |
140-257-103-155 |
140-257-103-155 |
210-257-103-155 |
ca c |
||||||
4P |
120-155-88-115 |
140-165-88-115 |
185-257-103-155 |
185-257-103-155 |
280-257-103-155 |
|
Weight(kg) |
3P | 1.8 | 2.1 | 5.5 | 5.7 | 5.7 |
| 4P | 2.3 | 2.6 | 7.0 | 7.5 | 7.5 | |
| Electric operating device (MD) | ||||||
| External drive handle | ||||||
| Automatic release | Electronic type | Electronic type | Electronic type | Electronic type | Electronic type | |
| Undervoltage release | |
| Rated voltage of power supply | Main features |
AC220, AC240 AC380, AC415 |
A. Undervoltage release should act when voltage drops to within 70% and 35% of the rated voltage. B. The undervoltage release should not be able to close to prevent the circuit breaker from closing when voltage is lower than 35% of the rated voltage. C. The undervoltage release should ensure to be closed and ensure reliable closing of the circuit breaker when voltage is equal to or greater than 85% of the rated voltage. |
| Shunt release | |
| Rated voltage of power supply | Main features |
| DC24, DC110 AC220, AC380 | Shunt release can work reliably when the rated voltage value is at 70% and 110%. |
| Auxiliary alarm contact | |
| Rated voltage of power supply | Main features |
| Auxiliary switch AC 125V 5A, AC 250V 3A DC 125V0.4A, DC 125V0.2A |
Shunt release can work reliably when the rated voltage value is at 70% and 110%. |
| Alarm switch AC 125 5A, AC 250V 3A DC 125V0.4A, DC 125V 0.2A |
Provide differentiated signals for the circuit breaker at "normal work" and "fault free trip" positions. |
| Auxiliary alarm switch AC 125V 5A, AC 250V 3A DC 125V0.4A.DC125V0.2A |
Provide differentiated signals for the circuit breaker at "close", "open" and "fault free trip" positions. |
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