Molded Case Circuit Breaker - MCCB

M3E electronic adjustable MCCB 125A-800A

M3E Electronic Adjustable MCCB Molded-Case-Circuit-Breaker

M3E series is an upgraded electronic adjustable molded case circuit breaker, with high-precision electronic tripping unit. Protection parameters can be adjusted freely to meet different working conditions.

It is suitable for precision equipment, intelligent power distribution systems, data centers, automation production lines and other high-demand applications.

M3E Series Electronic Adjustable MCCB – Overview

Model Current Tripping Type
M3E-100100AElectronic Adjustable
M3E-225225AElectronic Adjustable
M3E-400400AElectronic Adjustable
M3E-630630AElectronic Adjustable

Main Technical Parameters

M3E Series Electronic Adjustable MCCB – Detailed Technical Parameters

Item M3E-100 M3E-225 M3E-400 M3E-630
Frame Current Inm (A) 100 225 400 630
Rated Current In (A) 10,16,20,32,40,50,63,80,100 100,125,160,180,200,225 225,250,315,350,400 400,500,630
Rated Insulation Voltage Ui (V) 690 800 690 690
Rated Operating Voltage Ue (V) 400/690 230/400 400/690 400/690
Rated Impulse Withstand Voltage Uimp (kV) 6 8 6 6
No. of Poles 3/4 2/3/4 3/4 3/4
Breaking Class L/M L/M/H L/M L/M
Ultimate Breaking Capacity Icu (kA) AC400V 35/50 35/50/65 45/65 45/65
Service Breaking Capacity Ics (kA) AC400V 25/30 25/30/50 22.5/32.5 22.5/32.5
Adjustable Protection Parameters Ir/Isd/Ii Ir/Isd/Ii Ir/Isd/Ii Ir/Isd/Ii
Arc Flash Distance (mm) ≤50 ≤50 ≤100 ≤100
Operating Cycles / Hour 120 120 60 60
Mechanical Life With Load 3000 3000 1500 1500
Mechanical Life No Load 7000 7000 6500 6500
Tripping Type Electronic Adjustable Electronic Adjustable Electronic Adjustable Electronic Adjustable
Protection Class IP30 IP30 IP30 IP30
Standards GB14048.2, IEC60947-2 GB14048.2, IEC60947-2 GB14048.2, IEC60947-2 GB14048.2, IEC60947-2

M3E Series – Core Features

  • High-precision electronic tripping unit
  • Adjustable protection parameters (Ir, Isd, li)
  • High accuracy and stability
  • Strong anti-interference ability
  • Suitable for precision equipment protection
  • Long service life and low failure rate
  • Compatible with intelligent power systems

M3E Series – Typical Applications

Data Center Power Systems
Intelligent Power Distribution
Precision Industrial Equipment
Automated Production Lines
High-end Medical Equipment
Communication Base Stations