Moulded Case Circuit Breaker (MM1) -400A

Product Specifications

Markets:	South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Arc-extinguishing Medium:	Air
Breaking Capacity:	Low Voltage Circuit Breakers
Operation:	Manual Type
Installation:	Fixed
Speed:	Normal Type Circuit Breaker
Structure:	Moulded Case Circuit Breaker

Product Description

Moulded Case Circuit Breaker (MM1) -400A

Application:

Molded Case Circuit Breakers MM1 series (hereinafter called asMM1 MCCB) is a new designed MCCB develop and manufactured adopting international advanced technology. MM1 MCCB rated insulating voltage AC 800V is suitable for using in the circuit of AC 50Hz/60Hz, rated voltage up to 690V, rated working current up to 630A to distribute electric power and to protect equipment from being damaged due to overload, short current and under-voltage. It can also be used for infrequently switch and starting of motor and for motor overload, short circuit and under-voltage protections., MM1 MCCB with the advantages of the small volume, high breaking capacity, short over-arcing (some of specification is zero arcing), strong snit-vibration and so on.
In accordance with the ultimate short circuit breaking capacity classified into four types: Type C (basic), Type L (standard), Type M (middle), Type H (high).
MCCB comply with the following standards:
1. IEC 60947-1 and GB/T 14048.1 General
2. IEC 60947-2 and GB/T 14048.2 Low voltage breakers.
3. IEC 60947-4 and GB/T 14048.2 Contactors and motor starters.
4. IEC 60947-5.1 and GB/T 14048.5 Electrical equipment of electromenchanical control circuit.

Working Condition:
1. Not over altitude 2000m
2. Ambient temperature is between -5C to +40C (+45C for using marine)
3. Withstand the influence of moist air.
4. Smoke fog, salt mist and oil mist.
5. Max gradient is 22.5C
6. Working reliably under the condition of normal vibration in ship.
7. Working in the medium which not any explosive, no enough dielectric to corrode metal, no gas to damage insulation and electric conduction dust.
8. Working in the place would not be inva-ded by rain and snow.
9. Classification according to rated current (A):
MM1-63 has nine grades: (6), 10, 16, 20, 25, 32, 40, 50, 63A
MM1-100 has ten grades: (10), 16, 20, 25, 32, 40, 50, 63, 80, 100A
MM1-160 has four grades: 100, 120, 140, 160A
MM1-225 has seven grades: 100, 125, 140, 160, 180, 200, 225A
MM1-400 has five grades: 225, 250, 315, 350, 400A
MM1-630 has three grades: 400, 500, 630A
MM1-800 has three grades: 630, 700, 800A
MM1-1250 has three grades: 800, 1000, 1250A(specifications in brackets is not recommend)
10. The wiring method has four ways: Wiring in front of the board, wiring on back of the board, insertion type in front of the board and insertion type on back of the board.
11. According to the over-current release pattern, it would be divided two types: Thermo-electromagnetic (double) type and electromagnetic (instantaneous) type.
12. According to the outfit, it also has two types: with or without outfit. The outfit include inner and outside accessories.
13. The inner accessories have shunt release. Under-voltage release. Auxiliary contact and alarm contacts four kinds.
14. The outside accessories are tuning handle operation mechanism, power-driven operation mechanism, inner locking mechanism and the connecting terminal busbar of auxiliary device.