Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
1SDA100477R1 ABB XT5S 400 TMG 400-2000 400A 4-Pole Circuit Breaker
ABB 1SDA100477R1 XT5S 400 is a 400 A four-pole fixed moulded case circuit breaker with a TMG 400-2000 thermomagnetic trip unit and fully rated neutral for generator, transformer and electrical distribution protection.
£1,126.38
Why Choose the ABB 1SDA100477R1 XT5S 400 Circuit Breaker?
The ABB 1SDA100477R1 is a high-performance four-pole moulded case circuit breaker (MCCB) designed for generator, transformer and low-voltage installation protection. Part of the ABB SACE Tmax XT series, this XT5S 400 breaker combines a compact fixed design with a TMG thermomagnetic trip unit for dependable overload and short-circuit protection.
The circuit breaker has a 400 A rated current and uses the XT5 400 A frame. Its TMG 400-2000 thermomagnetic release provides adjustable thermal overload protection together with instantaneous magnetic short-circuit protection adjustable up to 2000 A, supporting reliable protection of generators and associated low-voltage distribution circuits.
The XT5S performance level provides increased short-circuit interruption capability for demanding electrical installations. Its four-pole configuration incorporates a fully rated neutral at 100% of In, while the fixed construction and front terminal connections support straightforward integration into generator switchboards, industrial distribution panels and three-phase four-wire systems.
Key Advantages
- High-performance ABB Tmax XT moulded case circuit breaker for generator and distribution protection.
- 400 A rated current within the XT5 400 A frame.
- TMG thermomagnetic trip unit for combined overload and short-circuit protection.
- Instantaneous magnetic protection adjustable up to 2000 A.
- Four-pole configuration with neutral rated at 100% of In.
- Fixed mounting with front terminals for straightforward switchboard integration.
Key Features
- ABB SACE Tmax XT series.
- XT5S 400 frame configuration.
- 400 A rated current.
- TMG 400-2000 thermomagnetic trip unit.
- Adjustable thermal overload protection.
- Instantaneous magnetic short-circuit protection adjustable up to 2000 A.
- Four-pole configuration for three-phase four-wire systems.
- Neutral protection rated at 100% of In.
- S short-circuit performance level.
- Fixed mounting with front main-circuit connections.
Reliable Generator and Distribution Protection
Moulded case circuit breakers such as the ABB XT5S protect electrical installations against damaging overload and short-circuit conditions. The TMG thermomagnetic release combines thermal overload protection with instantaneous magnetic short-circuit protection, providing dependable protection characteristics for generators, transformers and associated low-voltage distribution circuits.
The four-pole design incorporates a fully rated neutral at 100% of In, making the 1SDA100477R1 particularly suitable for three-phase four-wire systems requiring full neutral current capability. Together with its S-class performance, compact fixed construction and front-connected arrangement, the breaker provides a robust solution for industrial switchboards and distribution assemblies.
Typical Applications
- Generator protection and generator switchboards.
- Transformer and installation protection.
- Three-phase four-wire electrical systems.
- Industrial power distribution systems.
- Main and sub-distribution switchboards.
- Manufacturing, commercial and infrastructure electrical installations.
Technical Specifications
| Series | SACE Tmax XT |
|---|---|
| Order code | 1SDA100477R1 |
| Product type | Moulded case circuit breaker |
| Application | Generator, transformer and electrical distribution protection |
| Frame size | XT5 |
| Frame rating | 400 A |
| Rated current (In) | 400 A |
| Number of poles | 4 |
| Neutral rating | 100% of In |
| Trip unit | TMG 400-2000 |
| Release type | Thermomagnetic |
| Instantaneous short-circuit release | up to 2000 A |
| Short-circuit performance level | S |
| Mounting version | Fixed |
| Terminal connection | Front |
| Standard | IEC 60947-2 |
Frequently Asked Questions
What is the ABB 1SDA100477R1 used for?
The ABB 1SDA100477R1 is a four-pole moulded case circuit breaker designed for generator, transformer and low-voltage electrical distribution protection.
What is the rated current of the ABB 1SDA100477R1?
The circuit breaker has a rated current of 400 A and uses the ABB XT5 400 A frame.
What protection does the TMG 400-2000 trip unit provide?
The TMG thermomagnetic trip unit provides thermal overload protection together with instantaneous magnetic short-circuit protection adjustable up to 2000 A.
What does In=100%In mean on the ABB 1SDA100477R1?
It means the neutral is rated at 100% of the breaker rated current, providing full neutral current capability for suitable three-phase four-wire electrical systems.
How is the ABB 1SDA100477R1 installed?
The 1SDA100477R1 is a fixed four-pole circuit breaker with front terminals, making it suitable for integration into generator switchboards, industrial distribution panels and other low-voltage electrical assemblies.
Trusted by Electrical Engineers Worldwide
ABB SACE Tmax XT moulded case circuit breakers are widely used in generator, transformer and industrial power distribution systems where dependable overload and short-circuit protection, compact installation and robust switching performance are essential.
