1. Applicable scope and purpose

The NDQ3H PC-grade automatic transfer switching equipment (ATSE) are applicable for sites

with the AC voltage below 400V and the rated frequency of 50/60Hz. This product complies with the GB14048.1-2012 and GB/T14048.11-2016 standards in accordance with Code for Fire Protection of High-rise Civil Buildings, Code of Design on Building, Design Guidelines on

Emergency Lighting and Code for Electrical Design of Civil Buildings, etc.

This product mainly applies to the compulsory level I load which is widely used in important

places that require the continuous power supply, such as fire protection, telecommunications,

hospitals, hotels, urban rail transits, high-rise buildings, industrial assembly lines and TV stations. It adopts the network source, self-starting generator set and battery set as the main and Alternative power supplies.

2. Specification and model description

ND  Q  3H – X  X  X /  X  X  X

 1    2  3   4   5  6   7  8   9

SN      SN description            NDQ3H

1       Enterprise code            Nader low-voltage apparatus

2       Product code              Q: ATSE

3       Design code               3H

4       Rated current of housing    63

5       Controller type             A: basic type B: advanced type

                                  C: communication type D: LCD Type

6       Rated current              16, 20, 25, 32, 40, 50, 63

7        Number of poles           2-2P 3-3P 4-4P

8        Installation ty              pe Z-Integral type F-Split type

9        Switch position            II: two-segment III: three-segment

Note: If the pure mechanical manually operating transfer switch is needed, please be sure the controller type is empty and structure type is split.

3. Main technical parameters

Rated working voltage Ue: AC230V(2P) AC400V(3P、4P)

Rated frequency: 50/60Hz

Rated insulation voltage Ui: AC800V

Rated impulse withstand voltage Uimp: 8kV

Usage category: AC-33A

Rated short-circuit making capacity Icm(Peak Value):7.65kA

Rated short-time withstand current Icw:5kA On-time(s):30ms

Rated limited short-circuit current Iq: 100kA

Contact switching time: II≤0.1s III≤0.14s

Mechanical life:25000 times

Electrical life:8000 times 

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