TBC 4P 80A Single Phase Automatic Transfer Switch

Name: TBC 4P 80A Single Phase Automatic Transfer Switch
Brand: TBC
SKU: ATS-3TBC

ATS-3TBC

The TBC ATS-3TBC is a 4-pole automatic transfer switch for three-phase dual-power supply systems. It is rated at 80A and 400V AC. The switch transfers a connected load between two independent power sources, designated Source I and Source II.

The ATS-3TBC combines automatic and manual operating modes in a compact housing measuring 80 × 83 × 57.4 mm. Source status indicators and a manual operating handle give operators a clear view of the supply status and direct control when needed.

The switch is aimed at panel builders, electrical contractors and system integrators. It suits installations where continuity of supply between a primary and a backup source is essential.

Key Features

Rated working current of 80A at 400V AC, suitable for three-phase dual-power supply circuits.
4-pole construction switches both conductors of the three-phase supply during transfer between sources.
Automatic and manual operating modes support unattended source changeover as well as operator-controlled switching.
Clear source status indicators show which power source is currently supplying the load.
Manual operating handle allows direct switching during commissioning, maintenance or emergency conditions.
Rated insulation voltage (Ui) of 696V AC provides insulation margin above the 400V working voltage.
Rated impulse withstand voltage (Uimp) of 8kV helps the device withstand transient overvoltages on the supply network.
Compact 80 × 83 × 57.4 mm body supports space-efficient integration into distribution boards and control panels.
Rated for 50/60Hz operation, making it compatible with a wide range of supply networks.

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The TBC ATS-3TBC transfers a three-phase load between two independent supplies, Source I and Source II. Typical pairings are a utility mains feed with a generator, or a mains feed with an alternative backup supply. In automatic mode, the switch transfers the load between the sources without operator intervention. In manual mode, operators use the integrated handle to select the active source directly.

The device is rated for 80A at 400V AC across two poles and operates at 50/60Hz. Its insulation coordination includes a rated insulation voltage of 696V AC and a rated impulse withstand voltage of 8kV. These ratings support dependable performance in distribution environments exposed to switching transients.

The housing measures 80 × 83 × 57.4 mm (H × W × D). This compact size simplifies installation where panel space is limited. Clearly visible source status indicators let technicians confirm the active supply at a glance, which supports faster fault diagnosis and safer routine checks. Together, the compact construction, dual operating modes and clear status indication make the ATS-3TBC a practical choice for single-phase backup power applications.

The ATS-3TBC is a 4-pole transfer switching device for three-phase circuits rated at 400V AC and 80A, with operation at 50/60Hz. It connects the load to either Source I or Source II. Changeover can be performed automatically or manually through the front operating handle.

The insulation system is rated at 696V AC (Ui), and the impulse withstand rating is 8kV (Uimp). These values define the device's dielectric performance against continuous and transient voltage stress. Detailed data on the internal operating mechanism, transfer time, contact materials and arc-extinguishing arrangement is to be confirmed by the manufacturer.

Mains-to-generator changeover in three-phase residential backup power systems.
Dual-supply distribution boards in small commercial premises such as shops, offices and clinics.
Control panels that need continuity of supply from a secondary source during mains outages.
Three-phase circuits supplying critical loads such as security systems, communications equipment and emergency lighting.
Changeover between a grid supply and an inverter-based backup supply in three-phase installations.
Telecom cabinets and remote equipment enclosures fed from two independent three-phase sources.
Light-duty building services panels where automatic restoration of supply reduces downtime.

Product Name	Single Phase Automatic Transfer Switch (ATS)
Brand	TBC
Model	ATS-1TBC
Number of Poles	2P
Rated Working Current	80A
Rated Working Voltage	400V AC
Rated Insulation Voltage (Ui)	696V AC
Rated Impulse Withstand Voltage (Uimp)	8kV
Rated Frequency	50/60Hz
Operating Modes	Automatic / Manual
Power Sources	Source I / Source II
Dimensions (H × W × D)	80 × 83 × 57.4 mm

TBC 4P 80A Single Phase Automatic Transfer Switch

Key Features

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