Home Recloser & Remote Controller MT53PV Over/Under Voltage Recloser

MT53PV Over/Under Voltage Recloser

MT53PV Over/Under Voltage Recloser for PV Systems

The MT53PV Series is an over/under voltage recloser for PV and charging pile applications, designed to disconnect the circuit during overvoltage, undervoltage, or voltage loss conditions and automatically reclose after voltage recovery.

• Overvoltage, undervoltage, and voltage loss protection
• Overvoltage trip at ≥295V ±10V and reclose at ≤270V ±10V
• Undervoltage trip at ≤170V ±10V and reclose at ≥195V ±10V
• Voltage loss trip at ≤45V with automatic recovery after voltage returns to the normal range
• 10s auto-reclosing delay after voltage recovery
• Automatic reclosing after voltage recovery
• Designed for PV grid-connected systems and charging pile applications
• Anti-islanding protection for PV-side safety
• Rated operating voltage: 230V AC, 50/60Hz
• 18mm compact width, suitable for DIN-rail installation
• Auto / Manual / Lock operation modes
• Maximum 3 continuous auto-reclosings
• LED indication for voltage status and working mode
• Compatible with selected 1P / 2P circuit breakers and RCCBs

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Features & Advantages

feature

Over/Under Voltage Protection

Detects abnormal voltage conditions and trips the breaker during overvoltage, undervoltage, or voltage loss events to protect the circuit and connected equipment.

Automatic Reclosing

Automatically recloses the circuit after voltage recovery, helping reduce manual maintenance and restore power more efficiently.

PV Anti-Islanding Protection

Designed for PV grid-connected applications, helping disconnect the circuit when abnormal grid-side or PV-side voltage conditions occur.

Flexible Operation Modes

Supports Auto, Manual, and Lock modes, allowing users to choose automatic recovery, manual operation, or local locking according to site requirements.

Compact Breaker Integration

With an 18mm modular design, MT53PV can be installed with compatible circuit breakers or RCCBs, making it suitable for compact distribution boards and PV protection panels.

Target

Application Areas

01
PV Systems

Protect PV grid-connected circuits from overvoltage, undervoltage, voltage loss, and islanding-related risks.
02
Charging Piles

Provide voltage protection and automatic recovery for EV charging pile distribution circuits.
03
Building Power

Improve voltage fault protection for building electrical equipment and low-voltage distribution circuits.
04
Remote Sites

Suitable for base stations, environmental monitoring stations, smart greenhouses, and remote irrigation systems where automatic recovery can reduce on-site maintenance.