Product Details

Summarize

TN1M3 series plastic case circuit breaker (hereinafter referred to as circuit breaker), is one of the circuit breakers developed by our company using design and manufacturing technology, with a rated insulation voltage of 1000V (800V for TN1M3-63), suitable for use in circuits with AC 50Hz, rated operating voltage of 400/800V and below, and rated operating current up to 1250A, for infrequent switching and infrequent starting of motors. It is suitable for infrequent switching and infrequent starting of motor in the circuit of AC 50Hz, rated working voltage 400/800V and below, rated working current up to 1250A. The circuit breaker has overload, short-circuit and under-voltage protection functions, which can protect the line and power equipment from damage.

Circuit breaker according to its rated limit short circuit breaking capacity (Icu) of high and low, divided into S-type (standard) H-type (high breaking type) two types. The circuit breaker has the features of small size, high breaking capacity, short flying arc distance, anti-vibration, etc. It is an ideal product for land and ship use.

This circuit breaker can be installed vertically (i.e. vertical installation) and horizontally (i.e. horizontal installation).

This circuit breaker can not be inverted into the line, that is, only 1, 3, 5 can be connected to the power line, 2, 4, 6 connected to the load line. 

This circuit breaker has the function of isolation, the symbol is labeled as: 

This product conforms to IEC60947-2 and GB14048.2 standards.

Normal use Environment

1、Altitude of 2000m and below;

2, the surrounding medium temperature is not higher than +40 ℃ (+45 ℃ for marine products ) and not lower than -5 ℃;

3, pollution level 3;

4, can withstand humid air;

5, can withstand the effects of salt spray, oil mist; the gas and conductive dust in the place;

6, can withstand the effects of mold;

7、 The upper limit of inclination is s22.5°;

8, in the normal vibration of the ship can work reliably;

9、It can work reliably under the condition of earthquake (4g);

10, in the absence of explosion risk in the medium, and the medium is not enough to corrode the metal and damage the insulation;

11, in the place where there is no rain or snow attack.

Model Meaning

Note:

1)No designation for circuit breaker for power distribution;circuit breaker for motor protection is indicated by 2.

2) No code for direct operation; motorized operation is indicated by P; rotating Z for handle operation.

Decoupler Method and Accessory Designator

□ Alarm contact

○ Undervoltage detent

■ Auxiliary contact

→ Direction of fuse

● Shunt release