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2CSM228765R0802 ABB TM3024 TM30/24 30 VA Fail-Safe Bell Transformer
ABB TM3024 TM30/24 is a 30 VA fail-safe bell transformer with a 230 V AC primary and selectable 12 V AC and 24 V AC SELV secondary outputs for discontinuously operated bell and signalling circuits.
£34.14
Why Choose the ABB TM3024 TM30/24 Bell Transformer?
The ABB TM3024 (TM30/24) is a compact 30 VA fail-safe bell transformer designed to provide safety extra-low-voltage power for doorbells, chimes and compatible signalling circuits. Part of the ABB TM / System pro M compact range, it is intended for loads requiring a discontinuous supply and combines electrical isolation with convenient DIN-rail installation.
Operating from a 230 V AC primary supply, the TM30/24 provides selectable 12 V AC and 24 V AC SELV secondary outputs. With a maximum output current of 2.5 A, the transformer provides flexibility for compatible extra-low-voltage signalling equipment requiring either of these common supply voltages.
The TM30/24 uses a fail-safe transformer design with isolation and separation between the primary and secondary circuits. Its 52.5 × 85 × 65 mm enclosure occupies three standard DIN modules, while an IP20 degree of protection and compliance with IEC/EN 61558-2-8 make it well suited to modular electrical distribution installations.
Key Advantages
- 30 VA maximum rated power for discontinuously operated bell and signalling loads.
- 230 V AC primary with selectable 12 V AC and 24 V AC secondary outputs.
- SELV secondary provides safety extra-low-voltage power for compatible equipment.
- Up to 2.5 A maximum output current for suitable low-voltage loads.
- Fail-safe construction with electrical isolation between primary and secondary circuits.
- Compact 3-module DIN-rail design for space-efficient distribution-board installation.
Key Features
- ABB TM fail-safe bell transformer.
- 30 VA maximum rated power.
- 230 V AC primary voltage.
- 12/24 V AC selectable secondary voltages.
- 1.25 A secondary current.
- 2.5 A maximum output current.
- 50/60 Hz rated frequency.
- IP20 degree of protection.
- Designed for discontinuous operation.
- Compact 52.5 mm width for modular DIN-rail installation.
- Designed in accordance with IEC/EN 61558-2-8.
Fail-Safe SELV Power for Bell and Signalling Circuits
Bell transformers electrically isolate mains voltage from extra-low-voltage signalling circuits, providing a suitable power source for compatible doorbells, chimes and similar equipment. ABB TM transformers feature a safety extra-low-voltage secondary and are specifically intended for loads requiring a discontinuous supply.
The ABB TM30/24 combines a 230 V AC mains input with selectable 12 V AC and 24 V AC outputs, allowing one transformer to support different compatible signalling devices. Its 30 VA maximum rating, fail-safe construction and compact three-module DIN-rail format provide a practical solution for residential and other modular electrical installations.
Typical Applications
- Residential doorbell circuits.
- Electric chimes and buzzers.
- Low-voltage signalling equipment.
- SELV bell and signalling circuits.
- Door-entry signalling installations.
- Modular electrical distribution boards.
- Compatible intermittently operated 12 V AC or 24 V AC loads.
Technical Specifications
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| Secondary Voltage | 24V | |
|---|---|---|
| Phase | Single Phase | |
| Rated Power (VA) | 30 VA | |
| Series | TM / System pro M compact | |
| SKU | TM3024 | |
| ABB order code | 2CSM228765R0802 | |
| EAN | 8012542287650 | |
| Product group | Protection & Control | |
| Product type | Fail-safe bell transformer | |
| Maximum rated power | 30 VA (discontinuous operation) | |
| Primary voltage | 230 V AC | |
| Secondary voltage | 12/24 V AC SELV | |
| Secondary current | 1.25 A | |
| Maximum output current | 2.5 A | |
| Rated frequency | 50/60 Hz | |
| Degree of protection | IP20 | |
| Connecting capacity | 2.5 mm² | |
| Tightening torque | 0.5 Nm | |
| Operating ambient temperature | +10 °C to +40 °C | |
| Standard | IEC/EN 61558-2-8 | |
| Mounting | DIN rail | |
| Module width | 3 modules | |
| Dimensions (W × H × D) | 52.5 × 85 × 65 mm | |
| Weight | approx. 0.45 kg | |
| Pack quantity | 4 pieces |
Frequently Asked Questions
What is the ABB TM3024 TM30/24 used for?
The TM30/24 is a 30 VA fail-safe bell transformer designed to provide safety extra-low-voltage power for doorbells, chimes and compatible signalling circuits requiring discontinuous operation.
What are the input and output voltages of the ABB TM30/24?
The transformer operates from a 230 V AC primary supply and provides selectable 12 V AC or 24 V AC SELV secondary outputs.
What is the maximum output current of the ABB TM30/24?
The TM30/24 has a specified maximum output current of 2.5 A and a secondary current rating of 1.25 A.
Is the ABB TM30/24 designed for continuous operation?
No. The TM30/24 is designed for discontinuous loads, particularly doorbells and chimes. A suitably rated continuous-duty transformer should be selected where the load requires continuous power.
How large is the ABB TM30/24?
The transformer measures approximately 52.5 × 85 × 65 mm, occupies 3 DIN modules and weighs approximately 0.45 kg.
Trusted ABB Bell Transformer Technology
ABB TM fail-safe bell transformers provide electrically isolated SELV power for bells, chimes and signalling equipment, combining selectable extra-low-voltage outputs with compact DIN-rail construction for dependable modular electrical installations.
