Surge Protector

ND20-B Surge Protector

The surge protector is suitable for use in the power supply system or communication system with the frequency of AC 50 or 60 Hz and the rated voltage not exceeding 380 V. It offers protection against the surge caused by direct and indirect lightning or other transient overvoltage.

This surge suppressor satisfies the demand for surge protection in the home, tertiary industry, and industrial areas. It provides several protection modes, including phase to phase, phase to ground, phase to neutral, neutral to ground, and their combinations.

Note
Maximum continuous operating voltage Ue: 320V, 385V, 420V
Test level: I
Voltage protection level: Up<2.0, 2.5, 3.0kV
Maximum discharge current (8/20us) Imax: 60, 80, 100KA
Nominal discharge current (8/20us) In: 30, 40, 60KA

ND10-C Surge Protector

Code: ND10-C
a. Altitude: not exceeding 2000m
Ambient air temperature: Normal range: -5 ~ +40℃
Extended range: -40 ~ +80℃
Relative humidity: room temperature 30%-90%
b. No significant shake and vibration in the installation place
c. No risks of explosion in the medium, medium non-metal corrosion, or damage to the insulation of gas and dust (including conductive dust)

Outline and Mounting Dimensions

ND10-B Power Surge Protector

Conforming to GB18802.1 or IEC61643-1, the ND10-B series surge protective device, hereinafter referred to as SPD, is suitable for use in the power supply system with the rated voltage below AC 380V and the frequency of 50 or 60 Hz. It is used for protection against surge resulting from direct or indirect lightning or other transient voltages. SPD offers common mode protection and differential mode protection.

Main Technical Parameters
Model Specification ND10-B/100 ND10-B/80 ND10-B/60 ND10-B/120
Grid operation voltage Un (V) 2P 1P
+N
4P 3
P+N
2P 1P
+N
4P 3P
+N
2P 1P
+N
4P 3P
+N
2P 1P
+N
4P 3P
+N
Maximum continuous operating voltage Uc (V) 275/420 275/420 140/275 275/420 140/275 275/420 275/420 275/420
Voltage protection level Up (kV)< 2.8/3.0 2.4 2.4 3.0/3.5
Maximum discharge current 100 80 60 120
Nominal discharge current 60 40 30 80
Response time ns <25
Protection class IP20
Use Line Protection

Our surge protector is built with a disconnector. When it fails due to overheat or breakdown, the disconnector can automatically disconnect the SPD from the power grid and issue an indication signal. When the surge protector works normally, the visual window displays white; when it fails, the window shows red.

Installation
1. This SPD is installed in the LPZOB or the junction of LPZ1 area and LP22 area with a 35mm standard rail. Multi-strand copper wire with the cross-section of 2.5 to 35 mm2 is used for connection.
2. Each pole of SPD must be set with protective device, such as a fuse or miniature circuit breaker.

ND15-B Surge Protector

The ND15 series surge protector is used for protection against surge caused by direct or indirect lightning or other transient voltages in the power supply systems, like IT, TT, TN-C, TN-S, and TN-CS, with the frequency of AC 50 or 60 Hz and the rated voltage of 380V.

This surge protection device is in line with GB18802.1 or IEC61643-1. According to the IEC 61643-1: 1998-02, it belongs to a Class B surge protector, suitable for use in high lightning-risk areas.

Model Specification ND15-D/15 ND15-C/40 ND15-B/65
Grid operation voltage Un (V) 380 380 380
Maximum continuous operating voltage Uc (V) 420 420 420
Voltage protection level Up (kV)< ≤1.8 ≤1.8 ≤1.8
Maximum discharge current 15 40 65
Nominal discharge current 8 20 35
Response time ns <25
Protection class IP20
Installation 35mm Track
Case material Flame-retardant PC
Remote telesignalling contact type Normally open contact
Terminal performance AC220V 1A DC30V 1A COS Φ=1
Cross-section of terminal conductor for remote signaling 1.5mm2 single strand/double strand

ND25-B Surge Protector

Number of poles: 1, 2 ,3, 4

Main Technical Parameters
Model Specification
Grid operation voltage Un (V) 200V
380V
220V
380V
220V
380V
220V
380V
220V
380V
Maximum continuous operating voltage Uc (V) 385V
420V
385V
420V
385V
420V
385V
420V
385V
420V
Voltage protection level Up (kV) ≤4.0
≤4.5
≤3.4
≤3.7
≤2.8
≤3.2
≤2.4 ≤1.8
≤2.2
Maximum discharge current 150 120 100 80
Nominal discharge current 100 80 60 40
Response time ns <100
Access wire cross-sectional are a L/N (mm ²) 20, 35 16, 25 16, 25 16, 25
Access ground wire cross-sectional Are a PE(mm ²) 35 20, 35 25, 35 25, 35
Fuse or circuit breaker selection 63A, 35A 63A, 100A 63A, 100A 63A
Cross-sectional area of the communication, alarm line ≥1.5
Work environment -40 ℃~ +85 ℃
Relative humidity ≤95%
Installation Standard to the track
Case material Glass fiber reinforced plastic
Dimensions
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