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1SDA054287R1 ABB T4V 250 TMA 125-1250 4p F F InN=100% Moulded Case Circuit Breaker
ABB 1SDA054287R1 SACE Tmax T4V 250 four-pole fixed moulded case circuit breaker with a 125 A TMA thermomagnetic trip unit, 625–1250 A magnetic protection range and fully rated neutral.
£1,500.41
Why Choose the ABB T4V 250 TMA 125-1250 4p F F InN=100%?
The ABB T4V 250 TMA 125-1250 4p F F InN=100%, order code 1SDA054287R1, is a high-performance moulded case circuit breaker (MCCB) designed for reliable protection and switching in low-voltage power distribution systems. As part of the ABB SACE Tmax T4 series, it combines a 125 A rated current with a TMA thermomagnetic trip unit and the high-breaking-capacity V performance level.
The integrated TMA thermomagnetic trip unit provides thermal overload and magnetic short-circuit protection without requiring an external power supply. Its instantaneous magnetic protection is adjustable from 625–1250 A, enabling dependable response to high fault currents while the thermal element provides protection against sustained overload conditions.
The T4V performance level provides an ultimate short-circuit breaking capacity of 200 kA at 415 V AC, making this breaker suitable for installations with very high prospective fault currents. This version features a four-pole fixed configuration with front terminals and a fully rated neutral at 100% of the phase current, making it particularly suitable for three-phase, four-wire distribution systems.
Key Advantages
- High-performance ABB SACE Tmax T4 moulded case circuit breaker.
- 125 A rated current for industrial and commercial power distribution.
- 200 kA ultimate breaking capacity at 415 V AC for high fault-level applications.
- TMA thermomagnetic trip unit provides overload and short-circuit protection.
- Adjustable magnetic protection range of 625–1250 A.
- Four-pole configuration for three-phase systems with neutral.
- 100% rated neutral for applications requiring full neutral conductor capacity.
- Fixed installation with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax T4V 250 series.
- 125 A rated current.
- Four-pole configuration.
- TMA thermomagnetic trip unit.
- Thermal overload and magnetic short-circuit protection.
- 625–1250 A adjustable magnetic protection range.
- 200 kA ultimate short-circuit breaking capacity at 415 V AC.
- Neutral conductor rated at 100% In.
- Fixed circuit breaker execution.
- Front main-circuit terminals.
High-Performance Thermomagnetic Circuit Protection
Moulded case circuit breakers such as the ABB SACE Tmax T4 protect low-voltage distribution systems against overload and short-circuit conditions. The TMA release combines a thermal element for sustained overload protection with an adjustable magnetic element that responds rapidly to severe short-circuit currents.
The T4V performance level is designed for electrical installations requiring particularly high fault interruption capability. Combined with four-pole switching and a fully rated neutral, the 1SDA054287R1 provides dependable protection for demanding three-phase, four-wire industrial and commercial distribution networks.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Commercial building electrical distribution systems.
- Three-phase, four-wire power distribution networks.
- Manufacturing and process plant switchgear.
- Main and sub-distribution circuits.
- Electrical control panels and machinery distribution systems.
- Applications with high prospective short-circuit fault levels.
Technical Specifications
| Series | SACE Tmax T4 |
|---|---|
| Order code / MPN | 1SDA054287R1 |
| Product group | Tmax T4 - T8 |
| Product type | Moulded case circuit breaker |
| Frame | T4 250 |
| Performance level | V |
| Rated current (In) | 125 A |
| Number of poles | 4 |
| Trip unit | TMA |
| Trip unit type | Thermomagnetic |
| Protection | Thermal overload and magnetic short-circuit protection |
| Magnetic protection adjustment range | 625–1250 A |
| Ultimate short-circuit breaking capacity (Icu) at 415 V AC | 200 kA |
| Neutral rating (InN) | 100% In |
| Mounting type | Fixed |
| Terminal position | Front |
Frequently Asked Questions
What is the ABB 1SDA054287R1 used for?
The ABB 1SDA054287R1 is a four-pole moulded case circuit breaker designed to provide overload and short-circuit protection in low-voltage industrial and commercial power distribution systems.
What is the rated current of the ABB T4V 250 1SDA054287R1?
The circuit breaker is fitted with a 125 A TMA thermomagnetic trip unit within the Tmax T4 250 frame.
What is the breaking capacity of the ABB T4V 250?
The T4V performance level provides an ultimate short-circuit breaking capacity of 200 kA at 415 V AC, making it suitable for installations with high prospective fault currents.
What protection does the TMA trip unit provide?
The TMA thermomagnetic trip unit provides thermal overload protection and magnetic short-circuit protection, with an adjustable magnetic protection range of 625–1250 A on this version.
What does InN=100% mean on the ABB 1SDA054287R1?
InN=100% indicates that the neutral pole is fully rated at 100% of the phase current, making the breaker suitable for applications requiring full-capacity neutral protection and switching.
Trusted for Low-Voltage Power Distribution
ABB SACE Tmax moulded case circuit breakers provide dependable circuit protection for industrial, commercial and infrastructure power distribution systems, combining high short-circuit performance with proven thermomagnetic protection technology.
