TXDB18 high breaking miniature circuit breaker

1、 The TXDB18-63 (TXL7-63) series belongs to the L7 miniature circuit breaker, which is a new product developed by our company on the basis of digesting and absorbing international advanced technology. This product has reliable performance, precise protection characteristics, high breaking capacity (10KA breaking capacity), small size, and is currently one of the latest products. This L7 miniature circuit breaker is mainly suitable for overcurrent protection of power line facilities and electrical equipment in buildings and similar places with AC 50/60Hz, rated voltage 230/400V, and rated working current not exceeding 63A. It can also be used for infrequent on-off operations. This circuit breaker complies with the requirements of IEC60898, GB10963.1 "Overcurrent Protection Circuit Breakers for Household and Similar Places" and other standards, and has obtained national CCC certification and CE certification. 2、 Model and specifications

1、 Scope of application

The TXDB18-63 (TXL7-63) series belongs toL7 miniature circuit breakerIt is a new product developed by our company on the basis of digesting and absorbing international advanced technology. This product has reliable performance, precise protection characteristics, high breaking capacity (10KA breaking capacity), small size, and is currently one of the latest products.
This L7 miniature circuit breaker is mainly suitable for overcurrent protection of power line facilities and electrical equipment in buildings and similar places with AC 50/60Hz, rated voltage 230/400V, and rated working current not exceeding 63A. It can also be used for infrequent on-off operations. This circuit breaker complies with the requirements of IEC60898, GB10963.1 "Overcurrent Protection Circuit Breakers for Household and Similar Places" and other standards, and has obtained national CCC certification and CE certification.

2、 Model and specifications

3、 Structural features

TXDB18-63（TXL7-63）High breaking miniature circuit breaker（L7 miniature circuit breaker）Composed of a casing, operating mechanism, thermal release, electromagnetic release, contact system, arc extinguishing system, etc., it has overload and short-circuit protection functions. The unique structure and powerful arc extinguishing system design enable the product to have a rated short-circuit capacity of 10KA. The product has a beautiful appearance, rail installation, and the following characteristics:
The handle is designed above the front end face, providing a strong sense of safety and comfortable hand feel during operation;
Both the upper and lower terminals are multifunctional wiring terminals, which can be connected to round wires, busbars, or both round wires and busbars simultaneously;
The power supply can be installed vertically or vertically, making it easy to install and saving wires;

4、 Normal working conditions

The upper limit of the surrounding air temperature shall not exceed plus forty degrees Celsius; The lower limit generally does not exceed minus five degrees Celsius. When using under conditions above positive 40 degrees Celsius or below negative 5 degrees Celsius, contact Taixi Electric Technology Department.
The altitude of the installation site generally does not exceed two thousand meters, and the use in higher altitude areas should be negotiated with the manufacturer.
The air is clean, and at a maximum temperature of 40 degrees Celsius, the relative humidity of the air should not exceed 50%. Higher relative humidity is allowed after class at lower temperatures, for example, at a temperature of 20 degrees Celsius, the relative humidity can reach 90%. It should be noted that due to temperature changes, moderate condensation may occasionally occur, and appropriate measures should be taken (such as drainage holes).
The circuit breaker is installed vertically, with an inclination of no more than 5% from the vertical plane.
A place without significant shaking or impact vibration.
If installed inside a closed protective enclosure and multiple units are installed closely together, the capacity reduction factor should be selected from 0.7 to 0.8. For metal protective enclosures, a high value can be used, and for all plastic protective enclosures, a low value can be used!

5、 Main parameters and technical performance

Release type scope of application B Suitable for providing line protection for resistive loads and low inductance distribution systems, as well as line protection for many electronic circuits. C Suitable for providing line protection for inductive loads and high sensitivity lighting systems, generally referred to as distribution protection. D Suitable for providing line protection to distribution systems with high inductive loads and large surge currents, generally referred to as power protection.

Rated current ln (A) Nominal cross-sectional area of wire (mm ²) 6 1 10 1.5 16. 20 2.5 25 4 32 6 40, 50 10 63 16

Rated voltage Ue (V)	number of poles	Shell level rated current ln (A)	Rated current ln (A)	Rated frequency (Hz)	Rated short-circuit capacity lcn (A)	Rated operating short-circuit breaking capacity lcs (A)	Rated impulse withstand voltage (kV)	Mechanical lifespan (times)	Electrical lifespan
230	1P 2P	63	6. 10, 16, 20, 25, 32, 40, 50, 63	50/60	10000	7500	4	4000	8000
400	2P 3P 4P

test	type	test current	Initial state	Tripping or non tripping time limit	Expected results
a	B、C、D	1.13ln	cold state	t≤1h	Do not release
b	B、C、D	1.45ln	Immediately following item a	t＜1h	trip
c	B、C、D	2.55ln	cold state	1s＜t＜60s	trip
d	B	3ln	cold state	t≤0.1s	Do not release
	C	5ln
	D	10ln
e	B	5ln	cold state	t＜0.1s	trip
	C	10ln
	D	15ln

6、 Appearance and installation dimensions

7、 Ordering Notice

When placing an order, please indicate the following points:
Product model and name: such as TXDB18-63 miniature circuit breaker/TXL7 high breaking miniature circuit breaker.
Instantaneous tripping rated current: such as 16A.
Number of circuit breaker poles: such as 1P.
Order quantity: such as 300 pieces.
Ordering example: TXDB18-63 miniature circuit breaker, 1P, 40A, 50000 pieces.