Adjustable Voltage and Current Protector 63A Brooks — Overview
The Adjustable Voltage and Current Protector 63A Brooks delivers reliable over-voltage, under-voltage and over-current protection with adjustable thresholds, configurable delays and clear voltage and current readouts. Ideal for protecting household and industrial loads, this unit offers automatic recovery, factory reset and fault inquiry functions for easy maintenance and operation.
Key Features
- Over-voltage and under-voltage protection with adjustable setpoints and automatic recovery
- Adjustable over-current protection up to 63A (models/configuration selectable)
- Digital voltage and current display for real-time monitoring and calibration
- Fully adjustable action and recovery times (0.1s to 30s action; 1s to 500s recovery)
- Power-on delay and fault inquiry via front-panel buttons; factory reset by long-press
- Low standby power consumption and long mechanical life for dependable operation
Technical Specifications
- Power supply: 230 VAC, 50/60 Hz
- Max. adjustable load current: 1 to 40 A (default 40 A) or 1 to 63 A (default 63 A)
- Over-voltage protection setpoint range: approximately 230 V to 300 V (default: 270 V)
- Over-voltage recovery range: 225 V to 295 V (default: 250 V)
- Over-voltage action time: 0.1 s to 30 s (default: 0.5 s)
- Over-voltage recovery delay: 1 s to 500 s (default: 30 s)
- Under-voltage protection range: 140 V to 210 V (default: 170 V)
- Under-voltage recovery range: 145 V to 215 V (default: 190 V)
- Under-voltage action time: 0.1 s to 30 s (default: 0.5 s)
- Under-voltage recovery delay: 1 s to 500 s (default: 30 s)
- Over-current adjustment range: 1 A to 40 A (default 20 A) or 1 A to 63 A (default 40 A)
- Over-current action time: 0.1 s to 30 s (default: 0.5 s)
- Over-current recovery delay: 1 s to 500 s (default: 30 s)
- Power-on delay: 1 s to 500 s (default: 10 s)
- Power consumption: < 2 W
- Mechanical (electric) life: 100,000 cycles
Protection Settings and Operation
This Brooks protector provides flexible protection logic and easy front-panel control:
- Voltage calibration: adjustable within ±10% to match system tolerances.
- Automatic recovery: device can automatically restore power when measured values return to safe ranges according to configured recovery delays.
- Factory reset: press and hold the down button for more than 12 seconds to restore default settings.
- Fault inquiry: press and hold the up button for more than 12 seconds to review recent fault information.
Display and Controls
- Digital voltage display for real-time voltage measurement.
- Digital current display for real-time current measurement.
- Front-panel UP and DOWN buttons for configuration, reset and fault checks.
Applications
- Residential and commercial power protection for appliances and sensitive electronics
- Pump and motor protection in HVAC and water systems
- Backup generator and transfer systems
- Solar and off-grid systems where voltage and current thresholds must be enforced
- Industrial control panels and machinery protection
Installation and Safety Notes
- Install in a dry, ventilated location and follow local electrical codes.
- Select the correct model and set the maximum load current to match the protected circuit.
- Ensure wiring is rated for the configured maximum current and that overcurrent devices are used where required.
- Adjust protection thresholds and delays during commissioning to avoid nuisance trips while ensuring safety.
Why Choose the Brooks 63A Protector
The Adjustable Voltage and Current Protector 63A Brooks combines flexible configuration, clear monitoring and reliable automatic recovery to protect equipment from damaging voltage and current events. Its long mechanical life and low power draw make it a practical choice for both residential and industrial installations.












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