MCCB circuit breaker WLM6LY-160A-4300 4P WLM6L Series RCCB earth leakage protection type 400V 160A 3 poles 4 Poles
Residual Current Circuit Breaker (RCCB) and its Advantages and Functions
1. Enhanced Safety: One of the primary advantages of RCCBs is their ability to enhance electrical safety. They are designed to quickly detect and interrupt abnormal current flows, such as leakage currents, which can occur when a person comes into contact with a live conductor or when there is a fault in the electrical system. By tripping the circuit in such situations, RCCBs help prevent electric shock and reduce the risk of electrical fires.
2. Protection Against Ground Faults: RCCBs provide protection against ground faults, which occur when current flows from an energized conductor to the ground. This can happen due to insulation failure or accidental contact with a live conductor. RCCBs are capable of detecting even small leakage currents and can quickly disconnect the circuit to prevent electric shock and other hazards.
A Residual Current Circuit Breaker (RCCB) is an electrical safety device designed to protect against electric shock and fire hazards caused by earth leakage currents. It works by constantly monitoring the balance of current flowing through the live and neutral conductors of a circuit. If a fault occurs, such as a person touching a live wire or water entering an electrical appliance, the RCCB quickly detects the imbalance and trips the circuit, cutting off the power supply and preventing potential harm.
One of the key advantages of RCCBs is their ability to provide enhanced protection against electric shock. They are particularly effective in detecting small leakage currents that may not be detected by traditional circuit breakers, thus significantly reducing the risk of electrical accidents.
Furthermore, RCCBs are designed to function reliably in a wide range of environments, making them suitable for both residential and industrial applications. They are also easy to install and require minimal maintenance, providing a cost-effective solution for ensuring electrical safety.
In summary, the primary function of an RCCB is to detect and interrupt earth leakage currents, thereby preventing electric shock and fire hazards. Its advantages include enhanced protection against electric shock, versatility in application, and ease of installation and maintenance, making it an essential component of modern electrical systems.
Main performance index of WLM6LY series circuit breaker
| WLM6LY Moulded Case Circuit Breaker | 160 | ||||||||||||
| Rated current (A) of circuit breaker 40℃ | Fix type | 16-20-25-30-32-40-50-60-63-75-80-90-100-125-140-150-160 | |||||||||||
| Lcd type | 16-20-25-30-32-40-50-60-63-75-80-90-100-125-140-150-160 | ||||||||||||
| Rated insulation voltage Ui (V) | 1000 | ||||||||||||
| Rated impulse withstand voltage (kV) | 8 | ||||||||||||
| Rated operational voltage Ue(V),AC 50/60Hz | AC230V(2P)/AC400(3P、3P+N、4P) | ||||||||||||
| Breaking capacity code | C | S | M | H | |||||||||
| Number of poles | 2P | ■ | ■ | ■ | ■ | ||||||||
| 3P | ■ | ■ | ■ | ■ | |||||||||
| 4P | ■ | ■ | ■ | ■ | |||||||||
|
Rated ultimate short-circuit breaking capacity Icu (kA) |
AC380/400/415V | 15 | 20 | 25 | 35 | ||||||||
| AC380/400/415V | 10 | 15 | 25 | 35 | |||||||||
|
Rated residual making and breaking capacity I△ m(kA) |
AC220/230/240V | – | – | 12.5 | 12.5 | ||||||||
| Limit non-actuating time △ t (ms) | 0.06s/0.2s/0.5s/1s | ||||||||||||
| Leakage alarm non-tripping function | □ | ||||||||||||
| overcurrent tripping type | Themal type | ||||||||||||
| Leakage tripping type | Electronic Type | ||||||||||||
| Residual current type | AC | ||||||||||||
| Standard | IEC/EN 60947-2 | ||||||||||||
| Utilization category | A | ||||||||||||
| Ambient temperature | -40℃ ~+70 ℃ | ||||||||||||
| Safety of insulation | ■ | ||||||||||||
| Arcing distance | 0 | ||||||||||||
|
Mechanical life (CO recycle) |
Maintenance | 15000 | |||||||||||
|
Electrical life (CO recycle) |
AC415V,In | 8000 | |||||||||||
| AC690V,In | 2000 | ||||||||||||
| Release units | |||||||||||||
| Mounting and connection | |||||||||||||
| Fixed | Front connection | ■ | |||||||||||
| Rear connection | ■ | ||||||||||||
| Plug-in | Front connection | ■ | |||||||||||
| Rear connection | ■ | ||||||||||||
| Draw-out | Front connection | – | |||||||||||
| Rear connection | – | ||||||||||||
| DIN rail | Front connection | ■ | |||||||||||
| Dimension | |||||||||||||
|
Dimension (mm) W×H×D |
Width (2P/3P/4P) | 60/90/120 | |||||||||||
| Height | 155 | ||||||||||||
| Depth | 68 | ||||||||||||
| Weight | |||||||||||||
| Distribution protection | 2P | – | |||||||||||
| 3P | 1.45 | ||||||||||||
| 4P | 1.592 | ||||||||||||