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NOARK: M3MS400T3L2 – Ex9M3M Series – Motor Protection Circuit Breaker (MPCB)

Jan 13, 2026 - NOARK M3MS400T3L2 - Ex9M3M Series - Motor Protection Circuit Breaker (MPCB) 1

January 13, 2026

M3MS400T3L2 – Ex9M3M Series – Motor Protection Circuit Breaker (MPCB) Provides High Quality, Compact Modular Design & Energy Savings

Magnetic-Only MCP – 1101506 – UL489 – M3 frame – 3P3d – 400A Rated – 600Vac

NOARK Electric offers a complete range of 3-pole Molded Case Motor Circuit Protectors (MCPs magnetic only). These M3MS400T3L2 – Ex9M3M Series MCPs are for 3-phase asynchronous motors protection. NOARK offers MCPs in 6 frame sizes – M1M (150A)‚ M2M (250A)‚ M3M (400A)‚ M4M (600A)‚ M5M (800A) and M6M (1200A). Each frame size offers a range of interrupting voltage ratings from 240-690Vac.

The Ex9M3M Series MCP conforms to global standards that include UL 489 / CSA C22.2 No 5 and IEC 60947-2. The traditional system used for this purpose relies on 3 different devices. These include a circuit breaker‚ a thermal relay and a contactor for motor switching.

In particular‚ when selecting these devices‚ different factors must be taken into consideration such as:

  • The rated motor power
  • The type of motorː with cage rotor or with wound rotor
  • The fault current at the point of the network where the motor is installed

Specifications

  • Primary Brand: NOARK
  • Main Function: Motor Protection Circuit Breaker (MPCB)
  • Product Series/Family Name: Electrical Protection > Circuit Breakers > Motor-Circuit Protectors (MCPs)
  • Sub-Range Name: Ex9M3M series
  • Functions: Motor Circuit Protector (MCP)
  • Poles: 3-poles (3P3d)
  • Rated Current: 400A (Continuous Amperes)
  • Frame Current Rating: 400 AF
  • Rated Operating Voltage (Ue): (IEC) 690 V
  • Rated Voltage (AC): 600Vac (50/60Hz)
  • Rated Impulse Voltage (Uimp): 8 kV
  • Rated Insulation Voltage (Ui): 800 V
  • Connection Type: 2-holes lugs
  • Short Circuit Breaking Rating:
    • 65kA (240Vac)
    • 42kA (480Vac)
    • 18kA (600Vac)
  • Ultimate Short Circuit Current Breaking Capacity (Icu):
    • 65kA (220/240Vac)
    • 65kA (380/415Vac)
    • 10kA (660/690Vac)
  • Trip Unit Type: Technology = Magnetic only
  • Protection Functions: Adjustable threshold Magnetic protection (Short-circuit)
  • Protection Settings: Magnetic instantaneous protection against short-circuit — adjustable to 7 pre-defined settings (2000A / 2400A / 2800A / 3200A / 3600A / 4000A / 4400A)
  • Dimensions:
    • H285mm x W140mm x D116.5mm
    • H11.22″ x W5.51″ x D4.59″
  • Order Code/Manufacturer SKU:
    • M3MS400T3L2
    • 1101506
  • Manufacturer Product Status: Commercialized
  • Equivalent to: 1101506
  • Compliant with Standard(s):
    • UL489 listed
    • UL489 recognized (file number E355392)
    • CSA C22.2 No.5
    • IEC/EN 60947-2
    • CE compliant
    • RoHS compliant
  • Electrical Durability: 5000 hours
  • Mechanical Durability: 8000 hours

For more information on NOARK electrical solutions HERE

Jan 13, 2026 - NOARK M3MS400T3L2 - Ex9M3M Series - Motor Protection Circuit Breaker (MPCB) 1

Source

M3MS400T3L2

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