NS MCCB

NS-400N silver ornamental NS electrical Molded case circuit breaker

Model
NS-400N
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NS-400N silver ornamental NS electrical Molded case circuit breaker

NS-400N silver ornamental NS electrical Molded case circuit breaker

Application

NS series moulded case circuit breaker is one of breaker which adopts international ad-vanced design, manufacture technology to develop. The rated insulating voltage is 750V, suit-able for AC 50Hz(60Hz),rated working voltage 690V or below, rated working current is 12.5A to1250A of circuit and used in distributing electric energy, and non-frequent breaking in the nor-mal conditions , protecting the current& equipment from overload&under voltage, circuit breakerwith rated frame current 400A or below,can be used in mousecage motor's non-frequent start,breaking during working, protecting motor from overload, short circuit&undervoltage,the prod-uct conforms to IEC60947-2 standard.

Main Technical Specifications

Type Pole number Rated insulating voltage(V) Rated operating voltage(V) Rated ultimate short circuit breaking capacity Icu (KA) at 380/415V Rated servies short circuit breaking capacity Ics at 380/415V(KA) Operation performance Utilization category
ON OFF
NS-100N 3, 4pole 750 690 and below 25 25 1500 8500 A
NS-100H 70 70
NS-100L 150 150
NS-160N 36 36 1000 7000
NS-160H 70 70
NS-160L 150 150
NS-250N 36 36 1000 7000
NS-250H 70 70
NS-250L 150 150
NS-400N 45 45 1000 4000
NS-400H 70 70
NS-400L 150 150
NS-630N 45 45 1000 4000
NS-630H 70 70
NS-630L 150 150
NS-1250N 3 pole 50 37.5 1000 4000
NS-1600N 50 37.5

Note:1. The N-pole breaker has no protection which closing and opening with the other three poles. 2. The type of thermal magnetic for NS-400/630 has no four poles.

Trip units main technical parameter
Thermal magnetic release

Type Rated currentIn(A) Note
NS-100 12.5,16,20,25,32,40,50,63,80,100 Tadjustable (0.8~1In)M adjustable (5~10In)
NS-160 16,20,25,32,40,50,63,80,100,125,160
NS-250 160,180,200,225,250
NS-400 315,350,400
NS-630 400,500,630
NS-1250 800,1000,1250 Tadjustable (0.8~1In)M fixed
NS-1600 1000,1250,1600

Electronic release

NS 22SE: protection of low-voltage distribution networks for NS-100\160\25

  1. Overload protection with adjustable threshold
  2. Short-circuit protection with adjustable threshold
  3. Load indication : light at 90% of Ir setting threshold;Flashing at 105% or more of Ir setting threshold
Type Rated current In(A) Note
NS-100 40,100 Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~.3×Ir (IEC60947-2)
(Long-time overload protection)
Im=2-3-4-5-6-7-8-10×Ir
(Short-circuit protection)
NS-160 40,100,160
NS-250 40,100,160,250

NS2 22ME: protection of motor for NS-100\160\250

  1. Overload protection with adjustable threshold, as defined by IEC60947-4 (2) tripping class 10
  2. Short-circuit protection with fixed threshold (13xIr)
  3. phase failure protection (tripping time delay between 3.5s-6s)
  4. Load indication : dark less than 105% of Ir setting threshold; Flashing at 105% or more of Ir setting threshold
Type Rated current In(A) Note
NS-100 40,50,80,100 Ir=0.6-0.63-0.67-0.71-0.75-0.80-0.85-0.90-0.95-1×In
NS-160 40,50,80,100,150
NS-250 40,50,80,100,150,220

NS 23SE: protection of low-voltage distribution networks for NS2-400\630

  1. Overload protection with adjustable threshold
  2. Short-circuit protection with adjustable threshold
  3. Load indication : light at 90% of Ir setting threshold;Flashing at 105% or more of Ir setting threshold
Type Rated current In(A) Note
NS-400 400 Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~1.3×Ir (IEC60947-2)
(Long-time overload protection)
Im=2-3-4-5-6-7-8-10×Ir
(Short-circuit protection)
NS-630 630

NS 53UE: protection of low-voltage distribution networks for NS-400\630

  1. Overload protection with adjustable threshold, as defined by IEC60947-2
  2. Short-circuit protection with adjustable threshold
  3. Instantaneous short-circuit protection
  4. Earth fault protection with adjustable threshold
  5. Load indication : light at 90% of Ir setting threshold;Flashing more than Ir setting threshold
  6. Fault indication
  • LEDs indicates the type of fault that caused tripping
  • Overload (LT protection) or abnormal component temperature (>Ir);
  • Short-circuit (ST or instantaneous protection)( >Im);
  • Earth fault (if earth fault protection option is present)(Ig);
  • Microprocessor malfunction (both (>Ir) and ( >Im) LEDs go on ,plus the (Ig) LEDs if earth fault protection option is present )
  • Battery powered. Spare battery are supplied in an adapter box. When a fault occurs , the LED indicating the type of fault ,lights for about 10 minutes . The information is however stored in memory . The LED can be illuminated by pressing the test pushbutton. The LED automatically goes off and the memory is cleared when the circuit breaker is reset .
Type Rated current In(A) Note
NS-400 400 Ir=0.4~1×In(adjustable 48 setting)
Tripping between 1.05~1.3×Ir (IEC60947-2)
at 6×Ir Trip time: 1s, 2s, 4s, 8s, 16s(adjustable)
(Long-time overload protection)
Isd=1.5-2-3-4-5-6-7-8-10×Ir
Trip time: 0s, 0.1s, 0.2s, 0.3s adjustable+I2t
(Short-circuit short time delay protection)
Ii=1.5-2-3-4-6-7-8-10-11×Ir
(Instantaneous short-circuit protection)
Ig=0.1-0.2-0.3-0.4-0.5-0.6-0.7-0.8-1×Ir
Trip time: 0.1s, 0.2s, 0.3s, 0.4s adjustable+I2t
(Earth fault protection) (If option is present)
NS-630 630

NS 43ME: protection of motor for NS-400\630

  1. Overload protection with adjustable threshold, as defined by IEC60947-4 (2) tripping class 10A,10 and 20
  2. Short-circuit protection with adjustable threshold (6...13xIr)
  3. Phase failure protection (built-in electronic release: operates unbalanced single-phase currentat 40% and more than )(tripping time delay 4s¡À10%),as defined by IEC60947-4.1
  4. Load indication : Flashing more than Ir setting threshold
  5. Fault indication
  • LEDs indicates the type of fault that caused tripping
  • Overload (LT protection) or abnormal component temperature (>Ir);
  • Short-circuit (ST or instantaneous protection)( >Im);
  • Phase failure (right LED);
  • Microprocessor malfunction ( (>Ir) ( >Im) and phase failure LEDs all go on )
  • Battery powered. Spare battery are supplied in an adapter box. When a fault occurs ,the LEDindicating the type of fault ,lights for about 10 minutes . The information is however stored inmemory . The LED can be illuminated by pressing the test pushbutton. The LED automaticallygoes off and the memory is cleared when the circuit breaker is reset .
Type Rated current In(A) Note
NS-400 400 Ir=0.4~1×In(adjustable 48 setting)
Trip degree: class 10A, 10,20(IEC60947-4)
(Long-time overload protection)
Im=6-7-8-9-10-11-12-13×Ir
(Short-circuit protection)
NS-630 630

Accessories

Accessories Rated operating voltage Consumption For type
Pick-up Seal-in
Shunt release(MX) 24V
100V
220/230V
380/400V
<10VA <5VA NS-100~630
Under-voltagerelease(UN) 220/230V
380/400V
<10VA <5VA
Accessories Rated operating voltage Consumption For type
AC12 AC15
Auxiliary contact(OF) 380/400V 6 3 NS-100~630
Alarm contact(AL) 380/400V 6 3
  • Rotary handle
  • Direct rotary handle
  • Degree of protection:IP40 

Function: 

  1. suitability for isolation 
  2. indication of three positions 0(off) I(on) and tripped 
  3. press "push to trip" button, can trip-free
  4. visibility of and access to trip unit settings 
  5. the circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied)
  • Extended rotary handle
  • Degree of protection:IP55

Function:

  1. Suitability for isolation
  2. Indication of three positions 0(off) I(on) and tripped
  3. Visibility of and access to trip unit settings when the door is open
  4. Door opening prevented when circuit breaker is on
  5. The circuit breaker can be locked in the off position by one to three padlocks , diameter 5 to 8mm(not supplied).Locking prevents opening of the switchboard door

Installation

Circuit breaker may be mounted vertically, horizontally or flat on their back without any derating of characteristics.

Fix

Mounting on backplate , mounting on rails

Connection

Front panel connection , black panel connection , plug-in connection 

Outline and Installation Dimension

Outline and Installation Dimension

mm C C1 C2 C3 G G1 G4 G5 H H1 H2
NS 100/160/250N/H/L 29 76 54 108 62.5 125 70 140 80.5 161 94
NS 400/630N/H/L 41.5 116 92.5 184 100 200 113.5 227 127.5 255 142.5
mm H3 H4 H5 H6 H7 K K1 K2 L L1 L2 P1 P2 P4 P5
NS 100/160/250N/H/L 188 160.5 321 178.5 357 17.5 35 70 52.5 105 140 81 86 111* 83
NS 400/630N/H/L 285 240 480 237 474 22.5 45 90 70 140 185 95.5 110 168 107
mm P6 R R1 R2 R4 R5 φT φT4 (Ue)
NS 100/160/250N/H/L 88 14.5 29 54 108 143 6 22 ≤32
NS 400/630N/H/L 112 31.5 63 71.5 143 188 6 32 ≤32
 
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