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1sda054478r1 t5n 400 tma 400-4000 4 pole abb mccb

MPN: 1SDA054478R1

Alt. SKU: T5N 400 TMA 400-4000 4p F F InN=100%In

Special Price £2,316.44 £1,930.37 Regular Price £3,563.76

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Why Choose the Moulded Case Circuit Breaker [1SDA054478R1]

The TMAX T5N 400 fixed four-pole circuit breaker features front terminals and a thermomagnetic release (TMA R 400) with adjustable trip settings ranging from 2000 to 4000 A. It includes a fully rated neutral pole, ensuring reliable performance and compatibility in three-phase electrical installations requiring robust protection and precise current interruption.

Technical Specification

  • Function: Thermomagnetic moulded case circuit breaker with TMA R release.
  • Poles: 4-pole fixed with fully rated neutral.
  • Rated Current: 400 A.
  • Rated Operational Voltage: 690 V AC / 750 V DC.
  • Rated Impulse Withstand Voltage: 8 kV.
  • Rated Insulation Voltage: 1000 V.
  • Short-Circuit Breaking Capacity (Ics): Up to 70 kA (220-230 V AC), 36 kA (380-415 V AC), 20 kA (690 V AC).
  • Terminal Type: Fixed front terminals.
  • Electrical Durability: 7,000 cycles at 60 operations per hour.
  • Mechanical Durability: 20,000 cycles at 120 operations per hour.

Trusted By Customers Worldwide

"Specified by UK panel builders for dependable control." Controls Engineer, UK

Frequently Asked Questions

What is the function of the C.BREAKER TMAX T5N 400?
It is a thermomagnetic moulded case circuit breaker with TMA R release.
What is the rated current of this circuit breaker?
The rated current is 400 A.
What is the maximum rated operational voltage?
The maximum rated operational voltage is 690 V AC / 750 V DC.
What is the short-circuit breaking capacity?
Up to 70 kA at 220-230 V AC, 36 kA at 380-415 V AC, and 20 kA at 690 V AC.
How many poles does the TMAX T5N 400 have?
It has 4 poles with a fully rated neutral.
What type of terminals does this circuit breaker have?
It features fixed front terminals.
What are the electrical and mechanical durability ratings?
Electrical durability is 7,000 cycles at 60 operations per hour; mechanical durability is 20,000 cycles at 120 operations per hour.
More Information
Manufacturer Part Number 1SDA054478R1
Barcode 8015644555153
Manufacturer ABB
Number of Poles 4 Pole
Amperage 400A
Alternative Product SKU T5N 400 TMA 400-4000 4p F F InN=100%In
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