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2CSM081402R0811 ABB TS812SW TS 8/12SW Bell Transformer 8 VA
ABB TS812SW TS 8/12SW is an 8 VA DIN-rail bell transformer with a 230 V AC primary, 12 V AC SELV secondary, integrated thermal protection and a built-in 0-1 load-control switch.
£66.46
Why Choose the ABB TS812SW TS 8/12SW Bell Transformer?
The ABB TS812SW (TS 8/12SW) is a compact non-inherently short-circuit proof bell transformer designed to provide safety extra-low voltage (SELV) power for loads requiring a discontinuous supply, particularly doorbells and chimes. As part of the ABB TS bell transformer series, it provides reliable electrical separation between the mains supply and low-voltage secondary circuit.
The TS 8/12SW operates from a 230 V AC primary supply and provides a 12 V AC secondary output with a maximum rated discontinuous power of 8 VA. An integrated thermal protection device in the secondary helps protect the transformer against short-circuit currents, while the SW version includes a convenient 0-1 switch for controlling the connected secondary load.
With a maximum secondary output current of approximately 0.66 A, a compact two-module format and DIN-rail mounting, the TS 8/12SW is well suited to installation in electrical distribution boards and building control panels. Its modular construction provides a practical low-voltage supply solution for bells, chimes and similar intermittently operated signalling equipment.
Key Advantages
- Compact bell transformer with safety extra-low voltage (SELV) secondary.
- 8 VA maximum rated power for discontinuous loads.
- 230 V AC primary input with 12 V AC secondary output.
- Maximum secondary output current of approximately 0.66 A.
- Integrated thermal protection device provides resistance to short-circuit currents.
- Built-in 0-1 switch for controlling loads connected to the secondary.
- Compact two-module DIN-rail design for electrical distribution boards.
Key Features
- ABB TS bell transformer series.
- Non-inherently short-circuit proof transformer.
- 8 VA rated power for discontinuous use.
- 230 V AC primary rated voltage.
- 12 V AC secondary rated voltage.
- 50/60 Hz rated frequency.
- ±15% secondary voltage tolerance under load.
- 0.66 A maximum output current.
- Integrated thermal protection on the secondary circuit.
- 0-1 load-control switch.
- IP20 protection rating.
- DIN-rail modular construction for fixed electrical installations.
Safe Low-Voltage Supply for Bells and Chimes
Bell transformers reduce mains voltage to a safety extra-low voltage suitable for signalling equipment and other intermittently operated low-voltage loads. The ABB TS 8/12SW converts a 230 V AC supply to 12 V AC while providing electrical isolation and separation between the primary and secondary circuits.
The integrated thermal protection device helps the transformer withstand short-circuit conditions by protecting the secondary circuit, while the built-in 0-1 switch allows convenient control of the connected load. These features make the TS 8/12SW a practical solution for fixed building installations where a dependable SELV supply is required.
Typical Applications
- Doorbell systems.
- Electrical chimes.
- Low-voltage signalling equipment.
- Residential electrical distribution boards.
- Commercial building installations.
- Control panels requiring a 12 V AC SELV supply.
- Intermittently operated low-voltage loads.
Technical Specifications
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| Secondary Voltage | 12V | |
|---|---|---|
| Rated Power (VA) | 8 VA | |
| Phase | Single Phase | |
| Series | TS Bell Transformers | |
| SKU | TS812SW | |
| ABB order code | 2CSM081402R0811 | |
| EAN | 8012542368403 | |
| Product group | Protection & Control | |
| Product type | Non-inherently short-circuit proof bell transformer | |
| Maximum rated power | 8 VA (discontinuous use) | |
| Primary rated voltage | 230 V AC | |
| Secondary rated voltage | 12 V AC | |
| Maximum output current | 0.66 A | |
| Rated frequency | 50/60 Hz | |
| Secondary voltage tolerance | ±15% under load | |
| Insulation system | Class B | |
| Secondary circuit | Safety extra-low voltage (SELV) | |
| Short-circuit protection | Integrated thermal protection device | |
| Switch | 0-1 secondary load-control switch | |
| Protection rating | IP20 | |
| Ambient operating temperature | +10 to +40 °C | |
| Cable cross-section | up to 2.5 mm² | |
| Terminal tightening torque | 0.5 Nm | |
| Mounting | DIN rail | |
| Modular width | 2 modules | |
| Dimensions (H × W × D) | 85 × 35 × 65 mm | |
| Net weight | approx. 0.35 kg | |
| Standard | IEC/EN 61558-2-8 |
Frequently Asked Questions
What is the ABB TS812SW TS 8/12SW used for?
The TS 8/12SW is a bell transformer designed to provide a safety extra-low voltage supply for discontinuously operated loads such as doorbells, chimes and similar signalling equipment.
What input and output voltage does the ABB TS 8/12SW use?
The transformer operates from a 230 V AC primary supply and provides a 12 V AC secondary output.
What is the power rating of the ABB TS 8/12SW?
The TS 8/12SW has a maximum rated power of 8 VA for discontinuous operation and a maximum secondary output current of approximately 0.66 A.
Does the ABB TS 8/12SW have short-circuit protection?
Yes. It is a non-inherently short-circuit proof transformer with an integrated thermal protection device in the secondary circuit that helps protect it against short-circuit currents.
Does the ABB TS 8/12SW include a switch?
Yes. The SW version includes a built-in 0-1 switch for controlling the load connected to the transformer secondary.
Trusted ABB Protection & Control
ABB TS bell transformers provide electrically isolated safety extra-low voltage supplies for bells, chimes and other discontinuously operated loads, combining compact DIN-rail installation with integrated thermal protection and dependable low-voltage performance.
