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1SDA083649R1 ABB T4V-HA250 TMA125-1250 4P 800V AC N100% Moulded Case Circuit Breaker
ABB 1SDA083649R1 is a T4V-HA250 four-pole fixed moulded case circuit breaker for 800 V AC applications with front terminals, a 125 A TMA thermomagnetic release, 1250 A magnetic protection level and 100% rated neutral.
£1,042.35
Why Choose the ABB T4V-HA250 TMA125-1250 4P 800V AC Circuit Breaker?
The ABB T4V-HA250 TMA125-1250 4P, order code 1SDA083649R1, is a specialised moulded case circuit breaker (MCCB) designed for demanding low-voltage distribution applications operating at up to 800 V AC. This T4V-HA250 configuration combines a 250 A frame with a TMA thermomagnetic release rated at 125 A.
The TMA release provides thermal overload and magnetic short-circuit protection, with an instantaneous magnetic protection level of 1250 A. This combination provides dependable protection against sustained overcurrent and high fault-current conditions without requiring an electronic protection unit.
The 1SDA083649R1 is supplied as a four-pole fixed circuit breaker with front terminals and features a 100% rated neutral pole. Its 800 V AC configuration makes it particularly suitable for higher-voltage AC distribution systems, industrial installations and electrical equipment requiring four-pole circuit protection.
Key Advantages
- Designed for demanding 800 V AC low-voltage distribution systems.
- 250 A frame with a 125 A TMA thermomagnetic release.
- 1250 A magnetic protection level for rapid short-circuit response.
- Provides both thermal overload and magnetic short-circuit protection.
- Four-pole configuration for three-phase systems with neutral.
- 100% rated neutral pole for full-current neutral applications.
- Fixed execution with front terminals for permanent switchboard installation.
Key Features
- ABB T4V-HA250 configuration.
- 250 A frame size.
- 125 A rated TMA release.
- 1250 A magnetic protection level.
- TMA thermomagnetic protection.
- 800 V AC application voltage.
- 4-pole configuration.
- 100% neutral rating.
- Fixed mounting.
- Front terminal arrangement.
Thermomagnetic Protection for 800 V AC Distribution
The TMA thermomagnetic release combines two complementary protection functions. Its thermal element responds to sustained overload conditions, while its magnetic element provides rapid operation during severe short-circuit faults, helping protect conductors and downstream equipment from damaging overcurrents.
The ABB 1SDA083649R1 is configured specifically for 800 V AC applications and combines four-pole switching with a fully rated neutral. This makes it a practical protection solution for industrial distribution systems where all four conductors must be accommodated and the neutral conductor must carry up to the full rated current.
Typical Applications
- 800 V AC industrial power-distribution systems.
- High-voltage low-voltage switchboards and distribution panels.
- Three-phase systems requiring a fully rated neutral pole.
- Industrial machinery and process equipment.
- OEM power-distribution assemblies.
- Four-pole feeder and circuit protection.
Technical Specifications
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| Device Type | MCCB | |
|---|---|---|
| Voltage | 800 V AC | |
| Product group | T-Max XT 250 Range | |
| ABB order code | 1SDA083649R1 | |
| Product type | Moulded case circuit breaker | |
| Frame / execution | T4V-HA250 | |
| Frame size | 250 A | |
| Trip unit | TMA thermomagnetic | |
| Rated trip current | 125 A | |
| Magnetic protection level | 1250 A | |
| Application voltage | 800 V AC | |
| Number of poles | 4 | |
| Neutral rating | 100% | |
| Mounting execution | Fixed | |
| Terminal arrangement | Front terminals |
Frequently Asked Questions
What is the ABB 1SDA083649R1?
The ABB 1SDA083649R1 is a T4V-HA250 four-pole fixed moulded case circuit breaker with front terminals, a 125 A TMA thermomagnetic release and an 800 V AC application rating.
What is the frame size of the ABB T4V-HA250?
The T4V-HA250 configuration has a 250 A frame size, while this specific breaker uses a 125 A TMA release.
What does TMA125-1250 mean on the ABB 1SDA083649R1?
It identifies a TMA thermomagnetic release rated at 125 A with a 1250 A magnetic protection level.
What protection does the TMA release provide?
The TMA release provides thermal overload protection and magnetic short-circuit protection, protecting the circuit against both sustained overcurrents and high fault currents.
What voltage is the ABB 1SDA083649R1 designed for?
This configuration is specifically designated for applications at up to 800 V AC.
What does N100% mean on this ABB circuit breaker?
N100% indicates that the neutral pole is rated for 100% of the breaker current, allowing the neutral conductor to carry the full rated current where required.
How is the ABB T4V-HA250 1SDA083649R1 installed?
This breaker is supplied in a four-pole fixed configuration with front terminals for permanent integration into compatible switchboards and electrical distribution assemblies.
Trusted by Electrical Professionals Worldwide
ABB moulded case circuit breakers are used by panel builders, electrical engineers, machine builders and OEMs for dependable overload and short-circuit protection in demanding industrial and commercial power-distribution systems.
