1. Applicable Scope and Purpose of Circuit Breaker

The NDM2L-125 molded case circuit breaker with the residual current protection (hereinafter referred to as circuit breaker) applies to infrequent switching of circuits with the AC 50/60Hz, the working voltage of AC415V and the working current up to 125A. With the overload, short circuit and undervoltage protection functions, the circuit breaker can protect lines and power equipment from damage. Meanwhile, they can deal with the personal safety, fire hazards and other potential risks caused due to long-term ground faults that can’t be detected with the overcurrent protection function.

2. Specification and Model Description of Circuit Breaker

ND M 2 L-□ □ □/ □ □ □/ □ □ □ □ □ □ □1  2 3 4  5  6  7   8  9 10  11 12 13 14 15 16 17   
1Enterprise codeND: “Nader” low-voltage apparatus
2Product codeM: Molded case circuit breaker (MCCB)
3Design SN2
4Derived code of the seriesL: Residual current protection
5Shell frame level125
6Breaking capacity levelM: Relatively high breaking type
H: High breaking type
7Operation modeNo code: Direct handle-operated mode
P: Motor-operated
Z: Rotary operation
8Derived code of the functionNo code: Type AC current leakage protection type
A: Type A current leakage protection type
9Delay typeX: Non-time delay
Y: Delay
XI: Non-time delay + alarm non-tripping
YI: Delay + alarm non-tripping
10Residual current release typeV: Type V residual current release
11Number of poles3, 4
12Release code3: Complex tripper
13Accessory codeSee Table 1
14Application codeNo code: Power distribution type
15N-pole (neutral pole) type of the 4P productA: The N-pole isn’t installed with an overcurrent release, but always connected
B: The N-pole isn’t installed with an overcurrent release, but on-off with the other three poles
C: The N-pole is installed with an overcurrent tripper, and on-off with the other three poles
16Rated currentSee Table 2
17Cabling typeNo code: Normal product
P: Connection busbar
Z1: Rear-plate connection
Z2H: Plug-in rear-plate connection
Z2Q: Plug-in front-plate connection
Z3H: Integrated plug-in rear-plate connection
Z3Q: Integrated plug-in front-plate connection

3. Main Technical Parameters of Circuit Breaker

Rated current of frame Inm (A)125
Rated current In (A)16, 20, 25, 32, 40, 50, 63, 80, 100, 125
Rated insulation voltage Ui (AC V)1000
Rated impulse withstand voltage Uimp (V)8000
Rated working voltage Ue (AC V)380/400/415
Utilization categoryA
Number of poles34
Breaking capacity level  MH/
Rated limit short-circuit breaking capacity Icu (kA)52.58552.5
Rated operating short-circuit breaking capacity Ics (kA)355035
Rated residual short-circuit making and breaking capacity I△m(kA)0.25 Icu
Rated residual action current I△n(mA)  Non-time delayType ACType V 30/100/300/500
Type AType V 30/100/300/500
delayType ACType V 100/300/500
Type AType V 100/300/500
Rated residual non-action current I△no(mA)0.5I△n
Residual current action timeResidual currentI△n2I△n5I△n10I△n
Non-time delayMaximum breaking time (s)
delayMaximum breaking time (s)0.5, 1.15 2.150.35, 1 20.25, 0.9 1.90.25, 0.9 1.9
Limit non-driving time (s) /0.1, 0.5 1 /
Operating performance (times)Electrical life8000
Mechanical lifeMaintainable free life20000
Maintainable life40000
咨询产品列表 提交咨询以上产品