Schneider Electric Masterpact MT Series Air Circuit Breakers MT08N1

Technical Dossier

Product Details And Specifications

Schneider Electric Masterpact MT Series Technical Notes

Masterpact MT Full Catalog & Functionalities (SKU List)

The following SKUs represent verified models within the Schneider Electric Masterpact MT series, organized by frame rating and pole configuration. Each entry reflects a distinct catalog reference with defined current rating, breaking capacity, and mounting type.

MT06H1: 630 A, H-frame (70 kA), fixed, 3-pole, standard incomer/feeder ACB.
MT06H13: 630 A, H-frame, draw-out, 3-pole, with MicroLogic 5.3 E trip unit.
MT06N1: 630 A, N-frame (50 kA), fixed, 3-pole, general-purpose distribution.
MT06N13: 630 A, N-frame, draw-out, 3-pole, MicroLogic 5.3 E, MODBUS ready.
MT08N1: 800 A, N-frame (50 kA), fixed, 3-pole, main incomer for MCC and MDB.
MT08N13: 800 A, N-frame, draw-out, 3-pole, MicroLogic 5.3 E trip unit.
MT08H1: 800 A, H-frame (70 kA), fixed, 3-pole, high breaking capacity feeder.
MT08H13: 800 A, H-frame, draw-out, 3-pole, MicroLogic 5.3 E, EcoStruxure compatible.
MT10N1: 1000 A, N-frame, fixed, 3-pole, standard bus coupler and incomer duty.
MT10N13: 1000 A, N-frame, draw-out, 3-pole, MicroLogic 5.3 E, MODBUS/Ethernet.
MT10H1: 1000 A, H-frame (70 kA), fixed, 3-pole, high-fault-level incomer.
MT12N1: 1250 A, N-frame, fixed, 3-pole, large feeder and bus section protection.
MT12N13: 1250 A, N-frame, draw-out, 3-pole, MicroLogic 5.3 E trip unit.
MT16N1: 1600 A, N-frame, fixed, 3-pole, main incomer for large LV switchboards.
MT16H1: 1600 A, H-frame (70 kA), fixed, 3-pole, high breaking capacity main incomer.
MT20N1: 2000 A, N-frame, fixed, 3-pole, large distribution and bus coupler duty.
MT20H1: 2000 A, H-frame, fixed, 3-pole, high-fault-level 2000 A incomer.
MT25N1: 2500 A, N-frame, fixed, 3-pole, heavy industrial main incomer.
MT32N1: 3200 A, N-frame, fixed, 3-pole, primary incomer for large LV substations.
MT40N1: 4000 A, N-frame, fixed, 3-pole, utility-scale LV main incomer.

Quality Control for the Masterpact MT Range

Air circuit breakers in the Masterpact MT series incorporate complex mechanical and electronic subsystems — including the draw-out cradle mechanism, stored-energy spring charging motor, MicroLogic X trip unit, and Bluetooth/Ethernet communication module — each of which requires dedicated verification procedures. DriveKNMS applies the following test protocol to all MT-series units processed through its facility: (1) Mechanical operation test: minimum 5 open/close cycles under no-load conditions to verify spring charging mechanism, racking mechanism engagement, and auxiliary contact sequencing; (2) Trip unit functional test: injection of simulated overcurrent, short-circuit, and earth fault signals via a calibrated secondary injection test set to verify MicroLogic X protection thresholds; (3) Insulation resistance test: 1000 V DC Megger test across all pole pairs and pole-to-frame, minimum 100 MΩ acceptance criterion; (4) Contact resistance measurement: micro-ohmmeter test on main current path, acceptance per IEC 60947-2 manufacturer limits; (5) Communication interface verification: MODBUS RTU and Ethernet/IP polling test to confirm trip unit data register integrity. All test results are documented and supplied with each unit shipment.