PV RECLOSING CIRCUIT BREAKER MDB7-100

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MDB7-100 is applied in a PV system; it can close automatically, the quality is excellent, and it can maintain the power transmission mode for a long time.

5 - 9 pieces 10 - 99 pieces
$6.75 $5.90
>= 100 pieces
$4.88

Contact Company

Mindian Electric Co., Ltd.

Zhejiang, China

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LED DISPLAY VOLTAGE PROTECTOR
A reliable voltage protection system is crucial for ensuring the safety and proper functioning of electrical equipment. It prevents damage caused by voltage fluctuations, reduces maintenance costs, and minimizes downtime. By using protective devices with auto-reclosing functions, power can be quickly restored after a fault is cleared, improving system reliability and reducing the impact on equipment and operations.
Auto-reclosing is a feature that allows protective equipment to automatically re-establish power after a temporary fault has been cleared. It works by detecting a fault, isolating the affected part of the system, and then reclosing the circuit after the fault no longer exists. This process reduces the duration of power outages, providing a more stable power supply.

PV SYSTEM RECLOSING CIRCUIT BREAKER

A PV reclosing circuit breaker is a specialized type of electrical switch used in photovoltaic systems to protect electrical equipment from damage due to fault conditions. It is designed to automatically interrupt the flow of current when a fault is detected, isolating the affected part of the system to prevent further damage. After a predetermined time, the breaker recloses, restoring power to the system if the fault has cleared.

A PV RECLOSING CIRCUIT BREAKER CONSISTS OF SEVERAL KEY COMPONENTS

Interrupter: This is the part responsible for breaking the electrical connection during a fault.
Contacts: These conductive parts enable the flow of current when the breaker is closed.
Actuator: This is the mechanism that opens and closes the breaker.
Control Unit: This component monitors the system for faults and sends signals to the actuator.
Reclosing Relay: This device determines when to reclose the breaker after a fault has cleared.

HOW A PV RECLOSING CIRCUIT BREAKER WORKS

When a fault occurs in the PV system, the control unit detects the abnormal current flow and sends a signal to the actuator. The actuator then opens the breaker, disconnecting the faulty section from the rest of the system. This interrupts the current flow and extinguishes the electrical arc.

After a predetermined time, the reclosing relay sends a signal to the actuator to close the breaker, reconnecting the previously isolated section. If the fault has cleared, power is restored to the system. However, if the fault persists, the breaker will open again, repeating the process until the fault is resolved or a pre-set limit of reclosing attempts is reached.

                                                            Model
                                                            MDB7-100
                                                        
                                                            Rated Current In
                                                            6A、10A、16A、20A、25A、32A、40A、50A、63A、80A、100A
                                                        
                                                            Poles
                                                            1p+n, Single Phase 3p+n, Three-phase Four-wire System
                                                        
                                                            Degree of protection
                                                            IP20
                                                        
                                                            Rated Working Voltage
                                                            Ue 1P+N/2P 230V AC/50Hz 3P+N/4P 400V AC/50Hz
                                                        
                                                            Electrical Life
                                                            ≥6000 times, cos=0.85~0.9
                                                        
                                                            Mechanical Life
                                                            ≥15000
                                                        
                                                            Automatic Reclosing Tc
                                                            ≥3s
                                                        
                                                            Rated Impulse Withstand Voltage (uimp)
                                                            ≥6KA
                                                        
                                                            For mounting on
                                                            35mm DIN rails

APPLICATIONS
Overvoltage and under-voltage protective devices with under-voltage auto-reclosing functions are widely used in various sectors, including:
Industrial
In industrial settings, voltage protection is crucial for maintaining the performance and safety of large-scale equipment and machinery. Examples include manufacturing plants, processing facilities, and power generation stations.
Commercial
Commercial establishments, such as office buildings, retail stores, and data centers, rely on stable power supplies to ensure smooth operations. Voltage protection devices help prevent damage to critical equipment like computers, servers, and HVAC systems.
Residential
Residential properties also benefit from voltage protection devices, as they help safeguard valuable electronics and appliances, such as televisions, refrigerators, and air conditioners, from voltage irregularities.

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