keeps tripping/2P, ac mini breakers
1 PRODUCT PROFILE
Model NDB1-32 NDB1-125
Rated Voltage (V) AC230 AC400/415
Rated Current (A) 6、10、16、20、25、32 50、63、80、100、125
Number of Poles 1PN 1P、2P、3P、4P
Certi cate CCC CCC
- Product Overview
- Product Features
● Application Scope
NDB1 Series MCB of TT and TN-S earth-system have such functions: Short-Circuit and Overload
protection, control and disconnect. Such breaker is used in low-voltage terminal distribution for industry,
civil building, energy, telecommunication and construction.
● Design Features
◆ When MCB normally open or trip because fault,the phase line and neutral line should keep
disconnected status to avoid the electric hurt by electrified neutral line.
◆ Full Protection Functions with overload and short-circuit protection. When connect or do breaking
operation, you should connect the neutral line at first, then do breaking operation.
◆ Connection is safety and reliable: Use “Frame” connection structure
◆ Easily mounting: TH35 standard mounting rail.
www.quisure.com
2
NDB1 Series MCB
PRODUCT PROFILE
● Structure Features
◆ NDB1-32 External Structure
◆ NDB1-125 External Structure
1、Model
2、Operation Handle
3、Load
4、Line
● Standards
NDB1-32、NDB1-125 Standards as follow:
◆ GB 10963.1 Electrical accessories-Circuit-breakers for over-current protection for household and
similar installation-Part 1: Circuit-breakers for AC operation
◆ IEC 60898-1 Electrical accessories-Circuit-breakers for overcurrent protection for household and
similar installation-Part 1: Circuit-breakeres for a.c. operation
1
2
4
3
1、Model
2、Switching Indicator
3、Operation Handle
4、Load
5、Line 3
2
3 PRODUCT PROFILE - Working Condition
● Electrical symbol
● Applicable Condition
◆ Ambient Usage Temperature and Storage Temperature
Ambient Usage Temperature: -35℃~+70℃, Standard Temperature: +30℃, correction factor of different
ambient usage temperature refer to sheet 1
Storage Temperature: -35℃~+70℃.
◆ Altitude
The altitude of the mounting site≤2000m
◆ Relative Usage Humidity and Relative Storage Humidity
The relative humidity shouldn’t exceed 50% when the ambient air temperature is +40 degrees, higher
humidity can be allowed in lower temperature. For example, the humidity can be 90% when the ambient
temperature is +20 degrees. Necessary measures should be acted for the condensation produced by
the changed temperature.
● Pollution Degree
2
● Protection Level
Level of Product Protection: IP20
● Mounting Types
Ⅱ(For Load Level) and Ⅲ(For distribution and control Level)
● Mounting Method
Mounted on TH35mm x 7.5 Standard Rail.
● Mounting Direction
◆ Vertical Mounting: The inclination between mounting plane and vertical plane should ≤±5 degrees
◆ Horizontal Mounting
● Environmental Requirement
Comply with RoHS
4
NDB1 Series MCB
PRODUCT PROFILE
No. Implication Instruction
1 Brand Code ND：
2 Product Code B：Miniature Circuit Breaker
3 Design Code 1
4 Frame Rating-Rated
Current (A) 32 125
5
Instantaneous
Tripping
Characteristics
C：Instantaneous Tripping
Range 5In～10In；
B：Instantaneous Tripping Range
3~5In
C：Instantaneous Tripping Range
5~10In
D：Instantaneous Tripping Range
10~14In
6 Rated Working
Current (A) 6，10，16，20，25，32 50A，63A，80A，100A，125A
7 Number of Poles 1PN 1P，2P，3P，4P - Product Technical Characteristic
4.1 Model and Implication
ND B 1 – /
5 PRODUCT PROFILE
4.2 Technical Parameters
Model NDB1-32 NDB1-125
Current Voltage (V) AC230 AC230/240;DC60/80(1P), AC400/415;DC80/125
(2P、3P、4P)
Rated Current (A) 6、10、16、20、25、32 50、63、80、100,125
Tripping Characteristics C C、D
Number of Poles 1PN 1P、2P、3P、4P
Rated Insulation Voltage (V) AC400V AC500V
Rated Ultimate Short Circuit
Breaking Current
4.5kA
Rated Operation Short Circuit
Breaking Current
4.5kA
Rated Working Frequency (Hz) 50/60 50/60
Mechanical and Electrical Life 10000 10000
Connecting and Wiring
Capacity
◆ Tunnel Connecting Terminal
◆ Terminal Connecting Area: 1~6 mm2
cable is
applicable
◆ Connecting Screw is M4,Torque is 1.2N.m
◆ Tunnel Connecting Terminal
◆ Terminal Connecting Area: 10~50 mm2
cable is
applicable
◆ Connecting Screw is M7, Torque is 3.5N.m
6
NDB1 Series MCB
PRODUCT PROFILE
-35 -30 -25 -20 -15 -10 -5 -0 5 10 15
1 1.27 1.25 1.23 1.21 1.19 1.17 1.15 1.13 1.10 1.08 1.06
3 3.89 3.83 3.76 3.70 3.64 3.57 3.50 3.44 3.37 3.30 3.22
6 7.70 7.58 7.46 7.34 7.21 7.09 6.96 6.83 6.70 6.56 6.42
10 13.89 13.62 13.35 13.07 12.81 12.53 12.23 11.93 11.63 11.33 11.01
16 20.78 20.43 20.08 19.75 19.40 19.05 18.70 18.33 17.96 17.58 17.20
20 25.67 25.28 24.88 24.47 24.06 23.64 23.22 22.78 22.34 21.89 21.43
25 32.21 31.72 31.22 30.70 30.18 29.65 29.10 28.55 27.98 27.41 26.82
32 41.04 40.46 39.82 39.17 38.51 37.84 37.15 36.47 35.75 35.03 34.30
40 51.63 50.86 50.04 40.21 48.37 47.51 46.63 45.74 44.83 43.90 42.95
50 64.92 63.97 62.92 61.86 60.77 59.67 58.54 57.40 56.23 55.05 53.81
63 83.48 82.06 80.64 79.19 77.72 76.22 74.70 73.14 71.54 69.91 68.24
80 135 130 126 122 118 115 112 108 104 99 95
100 160 155 150 146 142 137 133 129 125 122 118
20 25 30 35 40 45 50 55 60 65 70
1 1.05 1.02 1.00 0.97 0.94 0.91 0.89 0.86 0.83 0.80 0.77
3 3.14 3.06 3.00 2.92 2.84 2.76 2.67 2.58 2.49 2.38 2.27
6 6.27 6.14 6.00 5.84 5.68 5.52 5.36 5.19 5.01 4.83 4.64
10 10.67 10.34 10.00 9.63 9.24 8.85 8.45 8.01 7.55 7.06 6.55
16 16.80 16.40 16.00 15.55 15.11 14.66 14.20 13.71 13.21 12.70 12.75
20 20.96 20.47 20.00 19.47 18.95 18.42 17.87 17.30 16.71 16.10 15.47
25 26.22 25.61 25.00 24.33 23.67 23.00 22.28 21.56 20.80 20.02 19.21
32 33.54 32.77 32.00 31.17 30.34 29.48 28.60 27.69 26.75 25.78 24.77
40 41.98 40.99 40.00 38.93 37.85 36.75 35.61 34.43 33.21 31.95 30.63
50 52.56 51.28 50.00 47.82 46.24 44.81 43.33 41.81 40.23 38.58 35.77
63 66.53 64.78 63.00 60.11 58.19 56.21 54.16 52.03 49.81 47.50 43.05
80 91 88 85 82 80 75.5 72.5 68 64.5 58 52.5
100 114 111 108 103 100 94 88 82 75 68 58
● Temperature Correction Factor Sheet (1)
Ambient
Temperature
(℃)
Correction Current (A)
Rated
Current
(A)
Ambient
Temperature
(℃)
Correction Current (A)
Rated
Current
(A)
7 PRODUCT PROFILE
● NDB1-32 Tripping Curve
C Curve
★ Protect nominal load and distribution cables
★ Rated Current: 6-32A
★ Tripping Characteristics: Instantaneous tripping range 5In~10In
● NDB1-125 Tripping Curve
C Curve
★ Protect lighting distribution circuits
★ Tripping Characteristics: Instantaneous
tripping range 5In~10In
D Curve
★ Protect industrial distribution systems
★ Tripping Characteristics: Instantaneous
tripping range 10In~14In
4.3 Tripping Curve
8
NDB1 Series MCB
PRODUCT PROFILE
5.1 Accessory Sheet
5.2 NDB1-125 Accessory Types - Accessory
Note: Accessory parameters, please refer to “OF、SD, MX+OF” specimens.
No. Name Accessory Code Function and Matched Quantity
1 Auxiliary Contact OF
Linked to the left side of MCB to indicate OPEN or CLOSE status of the associated
breaker. Matched quantity: 3 Pcs Max.
2 Alarm Contact SD Linked to the left side of MCB to indicate the accidental tripping status of the
associated breaker. Matched quantity: 3 Pcs Max.
3 Shunt Release MX+OF Linked to the right side of MCB to indicate accidental tripping status and remote
breaking control of associated breaker.
Auxiliary Contact OF
Alarm Contact SD
Shunt Release MX+OF