UL489 NDM3EU-225 Molded Case Circuit Breaker
![](http://www.sovinelec.com/wp-content/uploads/2024/03/NDM3EU-225侧面-800.jpg)
Key Specifications/ Special Features:
● Product Details
Model Number: NDM3EU-225
Brand Name: Nader
Origin: China (mainland)
Small Orders:Accepted
NDM3EU Series is the first certified circuit breaker product in China to obtain the software report UL1998 related content. The product is
developed by our company for the North American market demand, and it meets the UL standard molded case circuit breaker product. The
rated insulation voltage of the product is 80VAC, which is suitable for AC power distribution system, rated working voltage to 600VAC,
rated working current to 400A for overload and short circuit protection. With overload long delay inverse time limit, short circuit transient,
short circuit short delay protection function, it can protect the line and power equipment from damage. The product is RoHS compliant.
Also comply with standards:IEC 60947-2,GB/T 14048.2 and certify by TUV Rheinland
● Standards
IEC 60947-2; GB/T 14048.2; TUV;UL
ND(1)M(2)3(3)E(4) (5)- (6) (7)/ (8) (9) (10) (11) (12) (13) | |||||
1. ND | Enterprise characteristic code | 2.Product code | Molded case circuit breaker (MCCB) | ||
3.Design serial | 3 | 4.Derivative code | E: Electronic type | ||
5.Certification code | U:UL | 6.Frame current Inm (A) | 225、400 | ||
7.Breaking capacity code | NDM3EU-225: | None | NDM3EU-400 | L | |
M | |||||
8.Number of poles | 3:3P | 9. Trip unit code | 3:Electronic | ||
10.Accessory code | None /Shunt Trip:10 /Auxilary Contact:20 /Shunt Trip+Auxilary Contact:40 | 11. Setting current (A) | NDM3EU-225 | 100、110、125、150、 175、200、225 | |
NDM3EU-400 | 250、300、350、400 | ||||
11.Wiring form code | NO code: Fixed Connection /Z2H:Rear Plug-in /L:Lug Terminal |
NDM3EU 225 Specification | ||||
Rated Insulation Voltage | 800V | Rated impulse withstand voltage Uimp(kV) | 8 | |
Power frequency withstand voltage(V) | 2200 | Isolation Function | Yes | |
Rated Voltage(V) | NDM3EU-225 | AC240V AC480V | ||
NDM3EU-400 | AC240V AC480V AC600V | |||
Interrupting level | NDM3EU-225 | NDM3EU-400L | NDM3EU-400M | |
AC240V | 65kA | 25kA | 65kA | |
AC480V | 35kA | 18kA | 35kA | |
AC600V | / | 14kA | 22kA | |
Mechanic Life | NDM3EU-225 | 4000 | NDM3EU-400 | 5000 |
Electrical Life | NDM3EU-225 | 4000 | NDM3EU-400 | 1000 |
Certification | UL489-2016;UL486E;UL1998 | |||
Protection Characteristics | Protection of overload long-time delay | NDM3EU-225: Ir(0.44~1)In Tr(12~100)s NDM3EU-400:Ir(0.65~1)In Tr(12~150)s | ||
Protection of short-circuit short-time delay | Is (2~10)*Ir+OFF Ts (0.1~0.4)s | |||
Protection of short-circuit instant | Ts<0.05s | |||
Attachment function | Terminal cover 2 groups of auxiliary (left) + Shunt Trip 120VAC (right) Plug in(Function of anti circuit plug) |
Working condition:
1.Environment temperature:-35°-+70°;
2.Altitude:≤2000m;
3.Pollution grade:3;
4.Protection degree:IP20.
1. Overload long-time delay protection
a) Overload long-time delay setting current IR, with an allowable deviation about 3%.
b) Overload long time-delay setting time TR, with the action time accuracy about 10%.
c) When the actual current I exceeds 1.15 times of the overload long-time delay setting current value Ir, it will be treated as the overload
state. The overload protection is implemented according to the inverse time limit characteristics with the delayed action time tr=
( 2*Ir/I)2*Tr;
d) The overload long delay has a thermal memory function, which can be activated 30 minutes after the tripping of the circuit breaker
(NDM3EU-225 requires 24V auxiliary power supply);
When the energy of the first trip is QT = ( 2* Ir) 2 * T, T is the trip time. The energy Q1 lost at interval T1 = QT * T1/Tthm, the energy
required for the second trip is Q0, that is, the second trip time is t = (QT – Q1) / ( 2* Ir) 2; For thermal memory function, please contact
the manufacturer.
2. Short circuit short-time delay protection
a) Short circuit short-time delay setting current Is, with an allowable deviation about 3%. When it is set to be off, the short circuit short-time
delay protection function of the controller will be off.
b) Action time value of the short circuit short-time delay protection Ts, with the action time accuracy about 10% (inherent absolute error ±40
ms).
c) The short circuit short-time delay protection is divided into two schemes, namely the fixed time limit protection and the inverse time limit
protection.
When the fault current is 1.5*Is>IIs, it features the inverse time limit protection characteristics, namely ts=(1.5*Is/I)2*Ts;
When the fault current is Ii>I1.5*Is, the inverse time limit protection is converted to the fixed time limit protection, namely ts=Ts.
3. Short circuit instantaneous protection
a) Setting current of the short circuit instantaneous action protection Ii, with an allowable deviation about 15%.
b) Short circuit instantaneous action protection action time Ti<50ms
![](http://www.sovinelec.com/wp-content/uploads/2024/03/NDM3EU-225正面-800.jpg)
![](http://www.sovinelec.com/wp-content/uploads/2024/03/NDM3EU-225端子罩-侧面-800.jpg)
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