ABB 1SDA100455R1 XT5S 400 TMA 400-4000 4p F F InN=100%In Moulded Case Circuit Breaker 400A 4P Fixed

The ABB 1SDA100455R1 XT5S 400 TMA 400-4000 4p F F InN=100%In is a 400A, 4-pole fixed-mounted power circuit-breaker from the Tmax XT5 series, engineered for transformer, generator, and installation protection in demanding industrial environments. With a breaking capacity of 85 kA at 220 V AC and a neutral protection level set at 100% In, this device delivers robust overcurrent and short-circuit protection for critical power distribution systems. Compact at 186 × 205 × 103.5 mm and weighing just 5.6 kg, it integrates seamlessly into control panels and switchgear assemblies.

Technical Specifications

Certifications & Standards

• RoHS: Compliant with Restriction of Hazardous Substances requirements
• REACH: Compliant with EU REACH chemical safety regulation
• EU Directive 2011/65/EU: Restriction of hazardous substances in electrical and electronic equipment
• Amendment 2015/863: Updated RoHS substance restrictions per EU amendment
• IEC 60947-2: Low-voltage switchgear and controlgear — circuit-breakers standard
• IEC 60947-2 (IEC60947-2): Verified compliance with the international circuit-breaker performance standard
• IEC 61850: Communication networks and systems for power utility automation
• EN 45555-61 (EN45555-61): General methods for the assessment of the ability of electrical and electronic products to be repaired, reused, and recycled
• EN 45555 (EN45555): Sustainable product requirements for electrical and electronic products
• WEEE: Compliant with Waste Electrical and Electronic Equipment Directive for responsible end-of-life disposal

Applications & Use Cases

• Transformer feeder protection in industrial and commercial power distribution panels
• Generator protection in standby and prime power applications
• Main and sub-distribution installation protection in low-voltage switchgear
• Control panel integration requiring compact 4-pole fixed circuit-breaker solutions
• Applications demanding full neutral conductor protection (InN = 100% In) in 4-wire systems

Frequently Asked Questions

What does TMA 400-4000 mean on the XT5S 400?

TMA refers to the thermomagnetic adjustable trip unit. The range 400–4000 indicates the overload and short-circuit current adjustment range in amperes, giving engineers flexibility to fine-tune protection for specific load profiles.

What is InN = 100% In?

This indicates that the neutral pole is protected at 100% of the rated current, which is essential for 4-wire systems where full neutral protection is required by installation standards or load characteristics.

Is the ABB 1SDA100455R1 suitable for generator protection?

Yes. The XT5S 400 TMA 400-4000 4p F F InN=100%In is specifically designed for transformer, generator, and installation protection, making it well-suited for genset output protection in both fixed and temporary power installations.

What is the breaking capacity of this circuit-breaker?

The device has a verified breaking capacity of 85 kA at 220 V AC, suitable for high fault-level industrial environments.