Schneider Electric MT Series Air Circuit Breakers MT25N1

Technical Dossier

Product Details And Specifications

Schneider Electric MT Series Air Circuit Breakers Technical Notes

The Schneider Electric MT Series (marketed under the legacy Merlin Gerin brand) represents a foundational line of molded-case and air circuit breakers deployed across global heavy industry. MT Series units are installed in chemical processing plants, nuclear auxiliary power distribution panels, petroleum refinery MCC (Motor Control Center) switchgear, and offshore platform power distribution boards. Rated from 16 A to 1600 A depending on frame size, the MT Series covers thermal-magnetic and electronic trip unit configurations, making it a reference standard in IEC 60947-2 compliant low-voltage switchgear. The series remains one of the most widely specified breakers in legacy European and Asian industrial infrastructure built between the 1980s and 2010s.

MT Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly sourced MT Series part numbers. Each entry reflects the standard IEC-rated configuration. Ampere ratings, pole count, and trip unit type are encoded in the model designation.

MT06N1: 3-pole thermal-magnetic MCB, 6 A, fixed trip, DIN rail mount, IEC 60947-2.
MT08N1: 3-pole thermal-magnetic MCB, 8 A, fixed calibration, motor branch circuit protection.
MT10N1: 3-pole thermal-magnetic MCB, 10 A, standard breaking capacity 25 kA at 415 V.
MT16N1: 3-pole MCCB, 16 A, adjustable thermal trip, suitable for feeder and motor protection.
MT20N1: 3-pole MCCB, 20 A, thermal-magnetic, panel board and distribution board use.
MT25N1: 3-pole MCCB, 25 A, adjustable magnetic trip, IEC 60947-2, standard breaking 36 kA.
MT32N1: 3-pole MCCB, 32 A, thermal-magnetic, compatible with MT25 mounting footprint.
MT40N1: 3-pole MCCB, 40 A, adjustable Ir/Im settings, motor and feeder dual-use.
MT50N1: 3-pole MCCB, 50 A, thermal-magnetic trip, industrial distribution panel application.
MT63N1: 3-pole MCCB, 63 A, high breaking capacity variant, MCC incomer protection.
MT80N1: 3-pole MCCB, 80 A, electronic trip unit option available, switchboard feeder.
MT100N1: 3-pole MCCB, 100 A, Micrologic ETU compatible, adjustable Ir/Isd/Im.
MT125N1: 3-pole MCCB, 125 A, thermal-magnetic, main incomer for sub-distribution boards.
MT160N1: 3-pole MCCB, 160 A, high-performance frame, ETU and TM trip variants available.
MT250N1: 3-pole MCCB, 250 A, large frame, electronic trip, main distribution board incomer.
MT400N1: 3-pole ACB, 400 A, drawout or fixed mount, Micrologic 2.0/5.0/6.0 ETU.
MT630N1: 3-pole ACB, 630 A, bus bar connection, main LV switchboard incomer.
MT800N1: 3-pole ACB, 800 A, electronic trip, generator and transformer feeder protection.
MT1000N1: 3-pole ACB, 1000 A, drawout frame, main incomer for large industrial facilities.
MT1600N1: 3-pole ACB, 1600 A, maximum frame rating, primary distribution switchgear.