TBC Adjustable Voltage Protector – 80A-100A 3 Phase

Name: TBC Adjustable Voltage Protector – 80A-100A 3 Phase
Brand: TBC
SKU: TBC 80A-100A 3 Phase

TBC 80A-100A 3 Phase

The TBC Adjustable Voltage Protector is a Three-phase, DIN rail-mounted protection device engineered to defend electrical systems and connected equipment against the damaging effects of over-voltage and under-voltage events. Rated at 80A-100A and designed for 220–240V AC systems, it delivers robust, reliable voltage monitoring and automatic load disconnection wherever stable power quality is critical.

Forming part of TBC's power protection product line, this device distinguishes itself through fully adjustable trip thresholds and reconnect delay settings, allowing installers and end-users to tailor protection parameters precisely to the demands of each application. A clear digital display and intuitive push-button programming interface simplify commissioning and on-site adjustment.

Targeting residential distribution boards, commercial shopfronts, and light industrial control panels, the TBC Voltage Protector provides a cost-effective, space-efficient solution for safeguarding high-value appliances, HVAC equipment, pumping systems, and process machinery from voltage-related damage.

Key Features

Adjustable over-voltage protection: User-configurable upper voltage trip threshold allows precise protection tailored to the connected load requirements.
Adjustable under-voltage protection: Independently configurable lower voltage threshold prevents equipment damage caused by sustained low-voltage supply conditions.
Adjustable reconnect delay time: Programmable time delay before automatic power restoration prevents repeated cycling and protects compressor-based loads such as air conditioners and refrigerators.
Automatic power cut-off and recovery: Device disconnects the load instantly upon detecting an out-of-range voltage and reconnects automatically once supply voltage stabilises within preset limits.
Real-time digital voltage display: Integrated digital display provides continuous, at-a-glance monitoring of supply voltage without the need for additional instrumentation.
Push-button programming interface: Simple front-panel push-button controls enable straightforward threshold and delay configuration without specialist tools.
Compact DIN rail mounting: 36 mm wide modular form factor installs directly onto standard DIN rail within existing distribution boards, minimising panel space requirements.
Flame retardant thermoplastic housing: Robust grey and black enclosure manufactured from flame retardant thermoplastic material enhances fire safety and long-term mechanical durability.
Wide frequency compatibility: Rated for 50 Hz and 60 Hz systems, making the device suitable for diverse geographic markets and generator-fed installations.

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The TBC Adjustable Voltage Protector 80A-100A 3 Phase is constructed around a precision voltage-sensing circuit that continuously monitors the incoming single-phase supply against user-defined upper and lower voltage limits. When the measured voltage deviates beyond either threshold, the internal switching mechanism immediately interrupts power to the downstream load, preventing over-voltage surges or sustained under-voltage conditions from causing insulation breakdown, motor burnout, or compressor failure in connected equipment.

The device housing is fabricated from flame retardant thermoplastic, providing a durable, electrically insulating enclosure that resists mechanical impact and meets indoor installation requirements. The compact 36 mm DIN rail profile allows the protector to be integrated seamlessly into standard modular distribution boards alongside miniature circuit breakers and residual current devices, without requiring additional panel space or custom mounting arrangements.

With its combination of adjustable trip points, programmable reconnect delay, and real-time digital voltage readout, the TBC Voltage Protector offers a technically complete and user-configurable protection solution. It is equally well suited to protecting sensitive household appliances in residential settings and critical process equipment in light industrial environments, making it a versatile addition to any power distribution installation.

The TBC Adjustable Voltage Protector employs a continuous electronic voltage-sensing circuit to compare the live supply voltage against independently programmable over-voltage and under-voltage set points. Upon detection of an out-of-range condition, the internal relay or switching element opens the load circuit within the device's designed response time, isolating downstream equipment from the abnormal supply. The reconnect delay timer, also user-adjustable, holds the output open for a configurable period after voltage returns to the acceptable band, preventing premature re-energisation of compressor loads and reducing mechanical stress on motor windings.

The push-button digital interface stores user-defined parameters in non-volatile memory, ensuring that protection settings are retained following a power interruption. The device is rated for 220–240V AC at 50/60 Hz and a maximum continuous current of 63A, with an operating ambient temperature range of -5°C to +40°C and a relative humidity tolerance of up to 95%, confirming suitability for typical indoor residential and industrial environments.

Air conditioner protection: Prevents compressor and control board damage caused by voltage fluctuations in residential and commercial HVAC installations.
Refrigerator and freezer protection: Safeguards compressor motors and electronic controls in domestic and commercial refrigeration equipment from over- and under-voltage events.
Water pump systems: Protects single-phase pump motors in domestic water supply, irrigation, and drainage applications against voltage-related burnout.
Shopfront and commercial electrical systems: Provides voltage protection for lighting, point-of-sale equipment, and general power circuits in retail and commercial premises.
Industrial control panels: Integrates into light industrial distribution and control panels to protect machinery, instrumentation, and automation equipment from supply voltage anomalies.
Residential distribution boards: Installs within home consumer units to provide whole-circuit or individual-circuit voltage protection for household appliances and electronics.
Generator-fed installations: Suitable for use with generator power supplies where voltage regulation may be less stable, protecting loads during generator start-up and load transients.

Product Type	Adjustable Voltage Protector
Model	TBC 80A-100A 3 Phase
System Type	Single Phase
Rated Current	80A-100A
Rated Voltage	230V–300V AC
Frequency	50/60 Hz
Over-Voltage Setting	Adjustable
Under-Voltage Setting	Adjustable
Reconnect Delay Time	Adjustable
Display Type	Digital Display
Control Method	Push Button Programming
Reset Mode	Automatic Reconnect
Installation	DIN Rail Mounting
Housing Material	Flame Retardant Thermoplastic
Colour	Grey / Black Front Panel
Dimensions (H × W × D)	95 mm × 99 mm × 65 mm
Weight	70gm
Ambient Operating Temperature	-5°C to +40°C
Relative Humidity	≤95%
Installation Environment	Indoor Use
Action Time	0.1-10.0

TBC Adjustable Voltage Protector – 80A-100A 3 Phase

Key Features

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