Disclaimer: Actual product colors may vary slightly from the images shown due to different monitor settings and lighting conditions during photo shoots.

ABB

ABB A3N 400 TMF 400-4000 3p F F 50°C 1SDA068810R1

SKU: 1SDA068810R1
(0)
AED 975 inc. VAT
In stock
Usually ships within 24 hours
Ready to work out of the box!

All items are delivered with essential accessories and easy-to-follow instructions. Unbox and start your projects with confidence!

Free shipping
100% secure payments
Industry leading quality

Got questions?

Feel free to get in touch

Ask an expert!

Email +971 50 536 2775

ABB A3N 400 TMF 400-4000 3-Pole MCCB (50°C Rated)

The ABB A3N 400 TMF 400-4000 is a fixed three-pole moulded case circuit breaker from the ABB Formula series, rated at 400A with a thermomagnetic (TMF) release and certified for continuous operation at 50°C ambient temperature. This higher ambient rating makes it particularly well suited to UAE plant rooms, rooftop switchrooms, and outdoor enclosures where sustained heat and dust are common operating conditions.

Key Features

  • 3-pole 400A moulded case circuit breaker with fixed thermomagnetic (TMF) release for dependable overload and short-circuit protection.
  • Rated for continuous operation at 50°C ambient, suited to high-temperature UAE plant rooms and unconditioned switchrooms.
  • 36kA ultimate breaking capacity (Icu) and 18kA service breaking capacity (Ics) at 415V AC for demanding fault-level applications.
  • N short-circuit performance level suited to main incomer and heavy industrial duty.
  • Front terminal connection for straightforward installation and wiring access in panel builds.

Technical Specifications

Specification Details
Brand ABB
Model A3N 400 TMF 400-4000 3p F F 50°C
Product Series SACE Formula
Poles 3
Rated Current (In) 400A
Rated Uninterrupted Current (Iu) 400A
Ambient Temperature Rating 50°C
Release Type TMF (Thermomagnetic, Fixed)
Short-Circuit Performance Level N
Rated Operational Voltage 550V AC / 250V DC
Rated Insulation Voltage (Ui) 690V
Rated Impulse Withstand Voltage (Uimp) 6kV
Breaking Capacity Icu (415V AC) 36kA
Breaking Capacity Ics (415V AC) 18kA
Terminal Connection Front
Mounting Fixed
Mechanical Durability 5,000 cycles
Electrical Durability 2,000 cycles
Dimensions (W x H x D) 139.5 x 205 x 103.5mm
Weight 4.75kg

Applications

  • Main incomer protection in UAE plant rooms and rooftop switchrooms exposed to high ambient heat
  • Large feeder and transformer secondary protection in commercial and industrial buildings
  • Generator and motor control centre protection in unconditioned or semi-outdoor enclosures
  • Distribution board upgrades and MCCB replacements where sustained high-temperature operation is a factor

Why Buy From Deluxe Electricals?

  • Genuine ABB product — manufacturer quality guaranteed
  • Stock held in UAE for fast local delivery
  • Competitive trade pricing for bulk and project orders
  • Expert technical support from our electrical specialists
  • Trusted supplier to contractors, FM companies, and retailers across the UAE

Need bulk quantity for your project? Contact us at sales@deluxeelectricals.me for special pricing and fast delivery across the UAE.

Order by 12PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on the next day.

Download