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