2CSM228625R0812 ABB TS164812 TS16/4-8-12 Bell Transformer 16VA 230V AC 4/8/12V AC

Why Choose the ABB TS164812 TS16/4-8-12 Bell Transformer?

The ABB TS164812 (TS16/4-8-12) is a modular bell transformer designed to provide safety extra-low voltage power for bells and other compatible signalling equipment. Part of the ABB System pro M compact TS transformer range, it provides electrical isolation between the mains supply and low-voltage secondary circuits.

The TS16/4-8-12 operates from a 230 V AC primary supply and provides selectable 4 V AC, 8 V AC and 12 V AC secondary outputs. Its maximum discontinuous-duty rated power is 16 VA, with a rated secondary current of 1.33 A and a maximum output current of 4 A.

Designed as a non-inherently short-circuit-proof bell transformer, the TS164812 incorporates thermal protection that helps maintain the transformer within specified temperature limits during fault conditions. The protective device automatically restores operation once the transformer has cooled sufficiently or the overload has been removed, while its compact 35 × 85 × 65 mm DIN-rail format simplifies installation in modular electrical assemblies.

Key Advantages

• Purpose-designed bell transformer for extra-low-voltage signalling circuits.
• 16 VA maximum discontinuous-duty power.
• 230 V AC primary input for standard mains-powered installations.
• Selectable 4 V AC, 8 V AC and 12 V AC secondary outputs.
• Provides a SELV secondary supply for compatible equipment.
• Integrated thermal protection with automatic restoration after cooling.
• Compact 35 mm / 2-module DIN-rail format.
• Designed in accordance with IEC/EN 61558-2-8 requirements for bell and chime transformers.

Key Features

• ABB System pro M compact TS series.
• Non-inherently short-circuit-proof bell transformer.
• 16 VA maximum rated power.
• 230 V AC primary voltage.
• 4/8/12 V AC selectable secondary voltage.
• 1.33 A rated secondary current.
• 4 A maximum output current.
• 50/60 Hz rated frequency.
• SELV secondary output.
• Integrated thermal protective device.
• Automatic restoration following sufficient cooling or removal of an overload.
• Compact modular construction for DIN-rail installations.

Flexible Extra-Low-Voltage Power for Bell and Signalling Circuits

Bell, chime and signalling equipment frequently requires an extra-low-voltage AC supply rather than direct connection to the mains. The ABB TS16/4-8-12 converts a 230 V AC primary supply into selectable 4 V AC, 8 V AC or 12 V AC outputs, allowing one transformer to support several common low-voltage signalling requirements.

The ABB TS range is designed for discontinuous-duty applications and incorporates thermal protection in the secondary circuit. If a short circuit or overload causes excessive heating, the protective device operates and automatically restores the transformer once it has cooled sufficiently or the fault condition has been removed, supporting dependable operation in residential and building installations.

Typical Applications

• Doorbell circuits.
• Electric bells and chimes.
• Low-voltage signalling devices.
• Residential building signalling systems.
• Electric lock and door-entry circuits where compatible with the selected output.
• Electrical distribution boards.
• DIN-rail assemblies requiring selectable 4 V AC, 8 V AC or 12 V AC SELV power.