2CSM228675R0812 ABB TS824 TS8/24 Bell Transformer 8VA 230V AC to 24V AC

Why Choose the ABB TS824 TS8/24 Bell Transformer?

The ABB TS824 (TS8/24) is a compact non-inherently short-circuit-proof bell transformer designed to supply safety extra-low voltage (SELV) to bells, chimes 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 the extra-low-voltage secondary circuit.

With a maximum discontinuous-duty rated power of 8 VA, the TS8/24 operates from a 230 V AC primary supply and provides a 24 V AC secondary output. Its rated secondary current is 0.33 A, making it suitable for appropriately rated doorbells, chimes and similar low-power signalling loads.

The TS824 incorporates a thermal protection device in the secondary circuit, providing resistance to short-circuit currents. Its compact modular construction measures 35 × 85 × 65 mm and occupies 2 DIN modules, allowing straightforward integration into residential and building distribution boards.

Key Advantages

• Purpose-designed bell transformer for discontinuous-duty signalling loads.
• 8 VA maximum rated power.
• 230 V AC primary input for standard mains installations.
• 24 V AC SELV secondary output.
• 0.33 A secondary current for compatible low-voltage loads.
• Integrated thermal protection provides resistance to short-circuit currents.
• Compact 35 mm / 2-module DIN-rail format.
• Designed in accordance with IEC/EN 61558-2-8 for bell transformer applications.

Key Features

• ABB System pro M compact TS series.
• Non-inherently short-circuit-proof bell transformer.
• 8 VA rated output power.
• 230 V AC primary voltage.
• 24 V AC secondary voltage.
• 0.33 A rated secondary current.
• 0.33 A maximum output current.
• 50/60 Hz rated frequency.
• 2.5 W power loss.
• Safety extra-low voltage SELV secondary.
• Integrated thermal protection in the secondary circuit.
• DIN-rail modular construction with no integrated on/off switch.

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

Doorbells, chimes and similar signalling equipment require a suitable extra-low-voltage supply rather than direct connection to mains voltage. The ABB TS8/24 converts a 230 V AC primary supply to an isolated 24 V AC SELV output, providing electrical separation between the primary and secondary circuits.

The ABB TS range is intended for loads requiring a discontinuous supply. The TS824 combines an 8 VA output with secondary-side thermal protection, helping it withstand short-circuit conditions while its compact DIN-rail construction enables neat integration alongside other modular protection and control equipment.

Typical Applications

• Doorbell circuits.
• Electric bells and chimes.
• Low-voltage signalling equipment.
• Residential building notification circuits.
• Compatible 24 V AC signalling devices.
• Residential electrical distribution boards.
• DIN-rail assemblies requiring a 24 V AC SELV supply for discontinuous loads.