Molded Case Circuit Breaker MCCB AM2 NS Model

MCCB NS series moulded case circuit breaker is one of breaker which adopts international ad-vanced design, manufacture technology to develop. The prod-uct conforms to IEC60947-2 standard.

Main Technical Specifications

Molded Case Circuit Breakers MCCB NS Specification 01

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 AM2-400/630 has no four poles.

Trip units main technical parameter

Thermal magnetic release

Molded Case Circuit Breakers MCCB NS Specification 02

Electronic release
AM2 22SE: protection of low-voltage distribution networks for AM2-100\160\250

Molded Case Circuit Breakers MCCB NS Specification 03

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

Molded Case Circuit Breakers MCCB NS Specification 26

AM2 22ME: protection of motor for AM2-100\160\250

Molded Case Circuit Breakers MCCB NS Specification 04

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

Molded Case Circuit Breakers MCCB NS Specification 09
AM2 23SE: protection of low-voltage distribution networks for AM2-400\630

Molded Case Circuit Breakers MCCB NS Specification 05

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

Molded Case Circuit Breakers MCCB NS Specification 09

AM2 53UE: protection of low-voltage distribution networks for AM2-400\630

Molded Case Circuit Breakers MCCB NS Specification 06

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 .

Molded Case Circuit Breakers MCCB NS Specification 07

AM2 43ME: protection of motor for AM2-400\630

Molded Case Circuit Breakers MCCB NS Specification 08

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 .

Molded Case Circuit Breakers MCCB NS Specification 09

Accessories

Molded Case Circuit Breakers MCCB NS Specification 10

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

5.Installation
Circuit breaker may be mounted vertically, horizontally or flat on their back without any derating of characteristics.
6.Fix
Mounting on backplate , mounting on rails
7.Connection
Front panel connection , black panel connection , plug-in connection
8. Outline and Installation Dimension

Molded Case Circuit Breakers MCCB NS Specification 11Molded Case Circuit Breakers MCCB NS Specification 12

Molded Case Circuit Breakers MCCB NS Specification 13

Molded Case Circuit Breakers MCCB NS Specification 14

P4=126 is suitable for=AM2 250N/H/L

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