NDB1LE-100

1.Application Scope and Purpose

●Short-circuit protection
●Overload protection
●Current leakage
●Isolation leakage
The NDB1LE-100 series of residual current action circuit breakers provide the ground leakage, direct or indirect electric shock by human body and other faults protection, which are applicable to the low -voltage terminal distribution in the industry, civil buildings, energy, communication, infrastructure and other fields.

2.Specifications and Models Description

3.Main Technical Parameters
●Electrical parameters
○Frequency: 50/60Hz
○Rated working voltage: AC230V(1PN(One protection pole , N pole continued conducting), 2P； AC400V (3P, 3PN (Three protection pole, N pole continued conducting), 4P)
○Rated impulse withstand voltage: 4kV
○Rated insulation voltage: 500V

○Rated operating breaking capability(Ics): 7.5kA
○Rated limit breaking capability(Icu): 10kA
○Type of the residual tripping current: AC
○Instantaneous tripping characteristics: C, D type
○Rated working current: 50A，63A，80A，100A
○Rated residual operating current: 30mA, 100mA, 300mA
○Mechanical life: 20,000 times
○Electrical life: 5000 times
●Isolating function
●Leakage visualization
●Wiring
○Tunnel terminal blocks
○Terminal connection area: 10mm²~50mm²
○Standard torque: 3.5N.m
○Protection class of the circuit breaker body: IP20
○To be installed in the distribution box: IP40
●Meet a criterion
○ GB/T 14048.2、IEC 60947-2
●Environmental protection standard
○Meeting RoHS requirement

4.Normal Working Environment

●Altitude: ≤2000m
●Ambient temperature: -25℃~+55℃
●Wet heat resistance：The humidity should be not more than 95% at 55℃
●Resistant to salt mist and oil mist
●Service place without explosive media, gas and dust which are corrosive and conductive

●A place free from rain and snow
●Pollution degree: 3

5.Tripping Characteristics

●Type C curve
○Protect the conventional load and distribution cable

○Rated current:50A~100A
○Tripping characteristics: Range of instantaneous tripping 8(1±20%)In
●Type D curve
○Protect the industrial power distribution system
○Rated current: 50A~100A
○Tripping characteristics: Range of instantaneous tripping 12(1±20%)In

Type C 8(1±20%)In

Type D 12(1±20%)In

6.Product Outline and Installation Dimensions

1PN

2P

3P

3PN

4P

7.Installation Mode

It can be easily installed on the TH35mm×7.5 standard guide

8.Packaging and Storage
Maximum packaging quantity: (1PN product: 3 pieces/box, 2P product: 2 pieces/box, ,3P/3PN/4P product: 1 piece/box). The packaged products should be stored in a warehouse with the air ventilation and the relative humidity no more than 80% and the temperature between -25℃and 60℃. No acidic, alkaline or other corrosive
gas exists in the ambient air in the warehouse. Under the above conditions, the storage period shall be no more than three years since the manufacturing date.

9.List of Accessories and Installation

●OF auxiliary contact Install on the left side of the moulded case circuit breaker for indicating the on-off state of the circuit breaker;
●SD alarm contact Install on the left side of the moulded case circuit breaker for indicating the fault tripping state of the circuit breaker.
10.Environmental Protection Requirements

Comply with the requirements of RoHS directives.

11.Precautions

●A user must be responsible for addressing a product issue that occurs because the user disassembles the

product without approval;

●It fails to provide protection for the electric shock caused due to two phases of the contacted lines to be protected;
●Do not test the insulation resistance of the product or carry out power frequency withstand voltage tes ts directly or indirectly with a megger or similar devices on the product so as to avoid damage to the product. If required by users, our company can provide an effective proof of the conformance test;
●In case of insulation resistance test on the project line, do not connect the product so as to avoid misunderstanding of the product quality or damage to the circuit board;
●Wiring of the leakage circuit breaker shall be done according to the up-in and down-out principle. Do not wire it wrongly. Otherwise, it may damage the product by pressing the test button again or in case of current leakage in the line;
●Wiring must be reliable to prevent the malfunction of the leakage circuit breaker or terminal burning damage due to the abnormal heat generation on the terminal;
●Carry out a monthly stimulated test on the current leakage. Namely, press the test button to make the circuit breaker act so as to test proper operation of the circuit breaker, and replace the abnormal products in a timely manner;
●For automatic disconnection of the leakage circuit breaker, analyze fault reasons for the line or equipment.