WLM7DC-250A-2300 2P 3P WLM7DC Series Photovoltaic solar type dc mccb 250vdc/500vdc/750VDC/1000VDC/1500VDC 250A 2 Poles solar mccb
MCCB Highlights
WLM7DC series mccb are applicable to the centralized photovoltaic power station system. The DC input voltage for 2P is 1000V~1500V, and the current is from 16A-800A.Molded Case Circuit Breakers (MCCBs) are essential components in electrical systems, providing protection against overcurrent and short circuits. While MCCBs are commonly used in AC applications, their use in DC systems is also gaining traction due to the numerous advantages they offer. In this article, we will explore the specific advantages of using MCCBs in DC applications and understand why they are becoming the preferred choice for protecting DC circuits.
Advantage : Enhanced Protection Capabilities
One of the primary advantages of using MCCBs in DC applications is their enhanced protection capabilities. Unlike traditional fuses, MCCBs offer adjustable trip settings, allowing for precise protection against overcurrent conditions. This level of customization ensures that the MCCB can respond to the specific characteristics of DC circuits, providing reliable protection against faults and overloads.
Additionally, MCCBs are designed to provide both short circuit and overload protection, making them versatile solutions for safeguarding DC systems. The ability to handle both types of faults ensures comprehensive protection, reducing the risk of damage to equipment and minimizing downtime in the event of a fault
Main performance index of WLM7DC series circuit breaker
| WLM7DC Moulded Case Circuit Breaker | 250 | ||||||||||||
| Rated operating current In (A),40℃ | 63-80-100-125-140-160-180-200-225-250 | ||||||||||||
| Rated insulation voltage Ui (V) | 1500 | ||||||||||||
| Rated impulse withstand voltage (kV) | 12 | ||||||||||||
| Rated operational voltage Ue(V),AC 50/60Hz | 250/500/750/1000/1250/1500 | ||||||||||||
| Breaking capacity code | – | M | H | ||||||||||
| Number of poles | 2P | – | ■ | ■ | |||||||||
| 3P | – | ■ | ■ | ||||||||||
| DC250V | – | – | 50 | ||||||||||
| DC500V | – | – | 50 | ||||||||||
|
Rated ultimate short-circuit breaking capacity Icu(kA) |
DC750V | – | – | 25 | |||||||||
| DC1000V | – | 15 | 25 | ||||||||||
| DC1250V | – | – | – | ||||||||||
| DC1500V | – | 5(3P20) | 7.5(3P25) | ||||||||||
|
Rated service breaking capacity Ics(kA) |
DC250V | – | – | 50 | |||||||||
| DC500V | – | – | 50 | ||||||||||
| DC750V | – | – | 25 | ||||||||||
| DC1000V | – | 15 | 25 | ||||||||||
| DC1250V | – | – | – | ||||||||||
| DC1500V | – | 5(3P20) | 7.5(3P25) | ||||||||||
| Standard | IEC/EN 60947-2 | ||||||||||||
| Utilization category | A | ||||||||||||
| Ambient temperature | -40℃ ~+70 ℃ | ||||||||||||
| Safety of insulation | ■ | ||||||||||||
| Arcing distance | 0 | ||||||||||||
|
Mechanical life (CO recycle) |
Maintenance free | 20000 | |||||||||||
|
Electrical life (CO recycle) |
Maintenance free | 1500 | |||||||||||
| Release units | |||||||||||||
| Distribution protection | TM | ■ | |||||||||||
| 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 | 78/107 | |||||||||||
| Height | 200 | ||||||||||||
| Depth | 109 | ||||||||||||
| Weight | |||||||||||||
| Weight(kg)/Fixed | 2P | 2.35 | |||||||||||
| 3P | 3 | ||||||||||||
| 4P | – | ||||||||||||
Overall and installation dimensions of circuit breaker
