Description
TeM7E series moulded case circuit breaker (hereinafter referred to as circuit breaker) is the fourth generation of circuit breaker
products developed and created by the outstanding designers in our company using the simulation design platform introduced and
the series of advanced technologies such as international advanced rotary double break point technology, contact repulsion and
locking technology, energy rapid tripping technology, and air blowing and magnetic blowing technology.
The product features with a high degree of modularity and its accessories are box mounted. It has the characteristics of small size,
high breaking capacity, high current limiting, zero flashover, full selectivity, and green environmental protection.
High performance: High-performance electronic moulded case circuit breaker TeM7E- 125/250/400/630
● Coordinated trip system, used to quickly break the extremely large short circuit current within 10ms;
● Double-coil transformer, used to ensure the current, voltage, and power accuracy within Grade 1.5;
● Convenient communication, used to realize remote signaling, remote control, remote regulation, and remote metering.
High breaking capacity: Each model of circuit breaker has multiple breaking capacities up to 150kA to meet various protection needs
required by customers:
● Standard application: Standard type (L)
● Applications with high performance requirements: (High breaking type: M and H)
● Special application: Current limiting type (S)
The circuit breaker is used in the AC 50/60Hz circuit with the rated voltage up to 690V and the rated current up to 630A for making,
breaking and carrying the rated current under the normal circuit conditions, and it can provide reliable protection for lines and
electrical equipment in the event of overload, short circuit, and undervoltage situations, and can be used as overload, short circuit
and undervoltage protection for the motor with infrequent start.
1.1 Product Features
● The international advanced rotary double break point technology, contact repulsion and locking technology, energy rapid tripping
technology, and air blowing and magnetic blowing technology are used, with high breaking capacity and high current limiting
coefficient;
he full series of products has zero flashover and the accessories are box mounted;
● The circuit breaker has the functions of overload long delay, short circuit short delay, short circuit instantaneous, earthing
protection, and neutral pole protection;
● With isolation function;
● With high environmental protection, the shell is made of recyclable material.
1.2 Standards:
● IEC 60947-1
● IEC 60947-2
1.3 Working Environment
● Ambient air temperature: -40°C ~+70°C; the mean temperature within 24h does not exceed +50°C;
Note: When the circuit breaker works in ambient air temperatures above +70°C or below -40°C, please contact the manufacturer for
negotiation.
● Altitude: The altitude of the installation site does not exceed 2000m. If the altitude exceeds 2000m, please refer to the altitude and
derating factor table;
● Atmospheric conditions: The relative humidity of the atmosphere air does not exceed 50% at the maximum ambient temperature
of +55°C; higher humidity is allowed at lower temperatures; when the monthly mean minimum temperature is +25°C in the wettest
month, the monthly mean maximum relative humidity of that month is 90% by considering the condensation occasionally occurred on
the product surface due to temperature changes.
● The circuit breaker should be installed in a place where there is no explosion hazard and no abnormal electric dust enough without
causing metal corrosion and insulation damage;
● Pollution degree: Level 3; Level 2 if the accessories are installed in the moulded case circuit breaker;
● Installation category: The installation category of main circuit of the moulded case circuit breaker is Class III, and of the auxiliary
circuit and control circuit is Class II.
1.4 Installation Method
The circuit breaker can be installed vertically (that is vertical mounted) and horizontally (that is horizontal mounted), and adopts the
lower wire inlet.
