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1SDA074665R1 ABB XT1S 125 TMF 20-500 3-Pole Circuit Breaker
ABB 1SDA074665R1 XT1S 125 TMF 20-500 is a 20 A three-pole fixed moulded case circuit breaker with TMF thermomagnetic protection, a 500 A magnetic trip value and a 35 kA interruption rating at 480 V AC.
£282.13
Why Choose the ABB XT1S 125 TMF 20-500 1SDA074665R1 Circuit Breaker?
The ABB 1SDA074665R1 is a compact and reliable three-pole moulded case circuit breaker (MCCB) designed for protection and isolation in low-voltage electrical distribution systems. As part of the ABB SACE Tmax XT / T-Max XT 250 range, this XT1S 125 breaker combines a compact frame with dependable thermomagnetic protection for industrial, commercial and machine-building applications.
This circuit breaker incorporates an ABB TMF thermomagnetic trip unit, providing thermal overload protection together with instantaneous magnetic short-circuit protection. Its fixed installation and front-terminal configuration make it straightforward to integrate into switchboards, distribution panels and electrical control equipment.
With a rated current of 20 A, a magnetic trip value of 500 A and a rated voltage of 600Y/347 V AC, the XT1S 125 TMF 20-500 provides dependable protection for three-phase circuits. The S breaking-capacity version provides an interruption rating of 35 kA at 480 V AC and is designed for applications requiring UL/CSA-compliant circuit protection.
Key Advantages
- Compact ABB SACE Tmax XT1 moulded case circuit breaker for low-voltage distribution.
- 20 A rated continuous current for protection of three-phase circuits.
- Three-pole configuration suitable for industrial and commercial electrical systems.
- Integrated TMF thermomagnetic trip unit provides overload and short-circuit protection.
- 500 A magnetic trip value for rapid response to high fault currents.
- 35 kA interruption rating at 480 V AC for demanding distribution applications.
- Fixed installation with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax XT1S 125 series.
- 20 A rated current.
- 500 A magnetic trip value.
- Three-pole circuit breaker.
- TMF thermomagnetic trip unit.
- 600Y/347 V AC rated voltage.
- S breaking-capacity class.
- 35 kA interruption rating at 480 V AC.
- Fixed mounting configuration.
- Front-positioned main circuit terminals with bolt connections.
- Manual toggle operating mechanism with optional motor operation.
- IP20 protection rating.
- Designed for UL/CSA applications.
Reliable Circuit Protection for Electrical Distribution
Moulded case circuit breakers such as the ABB XT1S 125 protect electrical circuits and connected equipment against damaging overcurrents caused by overload and short-circuit conditions. The TMF thermomagnetic trip unit combines thermal protection for sustained overloads with magnetic protection for high-current faults, providing dependable circuit protection without requiring a separate electronic trip unit.
The ABB SACE Tmax XT range is designed for efficient integration into modern low-voltage distribution equipment. The compact XT1 frame, fixed mounting arrangement and front terminals make the 1SDA074665R1 particularly suitable for panel builders, machine builders and electrical distribution installations where space-efficient and dependable protection is required.
Typical Applications
- Industrial low-voltage distribution boards.
- Commercial electrical distribution systems.
- Machine and production equipment.
- Electrical switchboards and control panels.
- Three-phase branch circuit protection.
- OEM machinery and automation systems.
Technical Specifications
| Series | SACE Tmax XT / T-Max XT 250 Range |
|---|---|
| Frame size | XT1 |
| ABB order code | 1SDA074665R1 |
| Alternate catalogue number | XT1SU3020AFF000XXX |
| Product type | Moulded case circuit breaker (MCCB) |
| Frame rated current | 125 A |
| Rated continuous current | 20 A |
| Magnetic trip value | 500 A |
| Rated voltage | 600Y/347 V AC |
| Number of poles | 3 |
| Trip unit | TMF thermomagnetic |
| Breaking capacity class | S |
| Interruption rating | 35 kA at 480 V AC |
| Installation | Fixed |
| Terminal position | Front |
| Main circuit connection | Bolt connection |
| Operating mechanism | Toggle |
| Motor operation | Optional |
| Integrated earth-fault protection | No |
| Protection rating | IP20 |
| Power dissipation | 1.8 W |
| Standard | UL |
| UPC / EAN | 8015644786427 |
Frequently Asked Questions
What is the ABB 1SDA074665R1 used for?
The ABB 1SDA074665R1 is a three-pole moulded case circuit breaker used to protect low-voltage electrical circuits against overloads and short circuits in industrial, commercial and machine-building applications.
What is the rated current of the ABB XT1S 125 1SDA074665R1?
The circuit breaker has a rated continuous current of 20 A within the compact XT1 125 A frame size.
What is the interruption rating of this circuit breaker?
The XT1S 125 has an S-class interruption rating of 35 kA at 480 V AC.
What type of trip unit does the ABB 1SDA074665R1 use?
The breaker uses an integrated TMF thermomagnetic trip unit, combining thermal overload protection with magnetic short-circuit protection and a 500 A magnetic trip value.
Is the ABB 1SDA074665R1 suitable for UL/CSA applications?
Yes. The XT1S 125 TMF 20-500 is the UL/CSA version of this ABB SACE Tmax XT circuit breaker and is intended for installations requiring the corresponding North American circuit-breaker configuration.
Trusted for Low-Voltage Electrical Protection
ABB SACE Tmax XT moulded case circuit breakers are widely used in industrial, commercial and OEM electrical systems, providing compact and dependable circuit protection for modern low-voltage distribution equipment.
