ABB MCCB XT5N 400 TMA 400-4000 3-Pole 50°C

ABB MCCB XT5N 400 TMA 400-4000 3-Pole 50°C

The ABB XT5N 400 TMA 400-4000 3P 50°C is a 3-pole MCCB with TMA 400–4000A trip, 36kA breaking capacity, and 50°C ambient temperature rating for UAE high-ambient industrial main incoming and primary distribution protection applications. Its 50°C rating ensures rated performance even in the hottest UAE switchroom environments.

Key Features

• 3-pole MCCB with 400–4000A TMA trip
• 36kA breaking capacity at 415V
• 50°C ambient rating for UAE high-temperature installations
• Main incoming switchgear duty
• Genuine ABB Tmax XT5N quality

Technical Specifications

Applications

• Main incoming protection in high-ambient UAE switchgear rooms
• Primary distribution incoming for large commercial buildings
• Industrial substation main incoming protection
• Critical infrastructure and data centre main MCCB

FAQ

• What's the difference between an MCB and an MCCB?
  An MCB (miniature circuit breaker) is typically rated up to 100A with a fixed, non-adjustable trip and lower breaking capacity, used for final circuits. An MCCB (moulded case circuit breaker) is built for higher currents and fault levels, and is used for main incomers, sub-mains, and feeder protection where an MCB's rating or breaking capacity would be insufficient.
• When do I need an MCCB instead of an MCB?
  Use an MCCB where the prospective fault current or load current exceeds what an MCB is rated to handle safely — typically at the main incomer or major sub-main level of a commercial or industrial distribution board.
• How many poles do I need?
  This is a 3-pole device, sized for the corresponding single or three-phase supply arrangement.
• Does this MCCB have an adjustable trip setting?
  Check the specific trip unit type in the Technical Specifications table above — thermal-magnetic MCCBs may have a fixed or adjustable trip range depending on the model; an electronic trip unit typically offers configurable protection curves.
• Can I install this myself?
  No. MCCBs are installed in distribution boards and panels by a licensed electrician, in line with UAE wiring regulations.

Orders placed before 12 PM (UAE time) are dispatched the same business day and delivered in 1–2 business days across the UAE. Delivery is free on orders over AED 200; below that it costs AED 15. International shipping is charged by weight at checkout, and international orders cannot be returned. Read our Shipping Policy and Refund Policy.

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