L&T DY125U MCCB 100A 4 Pole 415V 10kA Thermal Magnetic | EM90984OOKO

Note: the product photo is for illustration purpose only – it shows a different rating of the same model. The unit supplied is exactly the catalog number and rating on this page.

Looking for the L&T DY125U MCCB 100A 4 Pole? This is the genuine Lauritz Knudsen (formerly L&T Switchgear) DY series moulded case circuit breaker, catalog number EM90984OOKO, made for feeder and sub-distribution protection in shops, small industries, commercial buildings and OEM panels. We stock it at our Chamrajpet shop in Bengaluru with a GST invoice on every order, same-day dispatch for orders placed before 4 PM (Monday to Saturday), and delivery across all of Bengaluru including outskirts. Free store pickup is available. For project and bulk rates, WhatsApp us on +91 78160 62494.

This variant comes with spreader terminals included in the box, so terminating aluminium or copper cables up to 50 mm² is straightforward and you do not have to order spreaders separately. Phase barriers are also supplied with every unit. The fixed thermal-magnetic release needs no settings or commissioning: overload protection is thermal and short-circuit protection trips magnetically at 10 times the rated current (1000A for this 100A unit).

With a 10 kA breaking capacity at 415V AC (Ics = 100% of Icu), the DY125U is designed for installations where the prospective fault level does not exceed 10 kA – typically final distribution boards, small commercial feeders and sub-panels downstream of a larger incomer MCCB or ACB. If your fault level is higher, look at the DU range (18-50 kA) or the dsine DN range (25-100 kA) instead – we stock those too.

Practical panel-builder details: no load-line bias, so supply and load can connect to either side; clear ON / TRIP / OFF indication; suitable for isolation; conforms to IS/IEC 60947-2, IEC 60947-2 and EN 60947-2. The whole DY125U family covers 16A to 125A in 2, 3 and 4 pole versions.

Note on branding: L&T Switchgear is now Lauritz Knudsen Electrical & Automation (renamed in May 2024). Depending on stock, the unit may carry either the L&T or Lauritz Knudsen name. The catalog number, specifications and quality are identical.

📋 Technical Specifications

⚡ Key Features

• Genuine L&T / Lauritz Knudsen DY125U economy-range MCCB – catalog no. EM90984OOKO
• 100A, 4 Pole, 415V AC, 10 kA breaking capacity (Icu = Ics)
• Fixed thermal-magnetic release – no settings needed, works out of the box
• Spreader terminals and phase barriers included with this variant
• No load-line bias – connect supply and load on either side
• Clear ON / TRIP / OFF indication; suitable for isolation
• GST invoice on every order; same-day dispatch in Bengaluru for orders before 4 PM

📄 Official Catalogue / Datasheet

Download the official L&T / Lauritz Knudsen DU/DY MCCB catalogue (covers DY125U technical data, trip curves, accessories and dimensions): DU/DY MCCB Catalogue (PDF, official)

❓ Frequently Asked Questions