ABB 1SDA068345R1 XT4H 250 TMA 250-2500 3p F F 250A 3-Pole Fixed Moulded Case Circuit Breaker

The ABB XT4H 250 TMA 250-2500 3p F F (SKU: 1SDA068345R1) is a 250A, 3-pole fixed-mount power circuit-breaker from the Tmax XT4 series, engineered for transformer, generator, and installation protection in industrial power distribution. Rated at 250A with an exceptional breaking capacity of 70 kA at 400 V AC, this moulded case circuit breaker delivers reliable short-circuit and overload protection in demanding environments. Compact and robust, it fits seamlessly into industrial control panels and switchgear assemblies.

Technical Specifications

Certifications & Standards

• RoHS: Compliant with Restriction of Hazardous Substances requirements
• REACH: Compliant with EU REACH chemical safety regulations
• EU Directive 2011/65/EU: Restriction of hazardous substances in electrical and electronic equipment
• Amendment 2015/863: Updated RoHS substance restrictions per EU Directive 2015/863
• IEC 60947-2: Low-voltage switchgear and controlgear — circuit-breakers standard
• ATEX: Approved for use in potentially explosive atmospheres
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• VDE: Certified by Verband der Elektrotechnik (German electrical engineering standards body)
• WEEE: Compliant with Waste Electrical and Electronic Equipment disposal directive

Applications & Use Cases

• Transformer and generator feeder protection in industrial power distribution
• Main and sub-distribution board circuit protection
• Installation protection in manufacturing plants, utilities, and infrastructure projects
• Control panel and switchgear assembly integration
• Applications in potentially explosive atmospheres (ATEX-rated environments)

Frequently Asked Questions

What is the breaking capacity of the XT4H 250 TMA 250-2500 3p F F?
The ABB XT4H 250 TMA 250-2500 3p F F achieves a breaking capacity of 70 kA at 400 V AC, making it suitable for high fault-current industrial applications.

What protection release does this circuit-breaker use?
This model uses a TMA (Thermo-Magnetic Adjustable) release with an adjustable range of 250–2500 A, providing both thermal and magnetic protection.

Is this circuit-breaker suitable for explosive atmospheres?
Yes. The XT4H 250 TMA 250-2500 3p F F carries ATEX certification, confirming its suitability for use in potentially explosive environments.