operational condition

◆ Installation conditions: The external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction; The residual current operated circuit breaker should be installed vertically, with the handle facing upwards indicating the power supply position; Installation
There should be no significant impact or vibration at the location.
Environmental temperature: -5 ℃~40 ℃, with an average of no more than 35 ℃ within 24 hours.
◆ Altitude: The altitude of the installation site shall not exceed 2000m.
◆ Installation method: TH35-7.5 steel installation rail is used for installation.
Installation category: Level III.
Pollution level: Level 3.

Main parameters and technical performance

◆ Number of poles: single pole two wire (1P+N), two poles (2P), three poles (3P), three poles four wire (3P+N), four poles (4P);
Short circuit tripping characteristics: (8-12) In.
Rated voltage Ue (V): single pole, two wires, two poles: 230; Three pole, three pole four wire, four pole: 400;
Rated current In (A): 63, 80, 100, 125.
Rated current of shell frame level Inm (A): 125; 
Rated residual operating current I n (A): 0.03, 0.1, 0.3; 
Rated residual non operating current I no (A): 0.5I n; 
Rated short-circuit breaking capacity Icu (A): 6000; 
Rated residual making and breaking capacity I m (A): 2000; 
The breaking time of residual current action (see Table 1).

Mechanical and electrical lifespan:
Electrical lifespan: 1500 cycles, cos φ= 0.85~0.9;
◇ Mechanical life: 8500 times;
◆ Insulation impulse voltage resistance performance: Uimp (V): 4000;
The residual current operated circuit breaker operates at a peak current of 200A and an impulse current of
Under the action of surge overvoltage with a peak voltage of 4000V, it has the ability to withstand,
And it does not cause any misoperation.

other

Main structure and working principle
◆ Structure:
The circuit breaker with residual current protection is assembled from FSB1-125 plastic shell circuit breaker and residual current release.
The FSB1-125 plastic shell circuit breaker mainly consists of an insulated shell, operating mechanism, dynamic and static contacts, delay, instantaneous release, arc extinguishing chamber, etc.
The residual current release mainly consists of zero sequence transformers, electronic discrimination control circuits, release push rods, test buttons, etc. Connection between plastic shell circuit breaker and residual current release
Perform linkage through the push rod.
Working principle:
When the handle of the residual current operated circuit breaker is turned to the ON position, the mechanical mechanism drives the moving contact to move towards the static contact and make reliable contact with the static contact to connect the circuit. When the circuit is overloaded
When a fault occurs, the overload current causes the thermal bimetallic component to bend and push the lever to reset the mechanical locking mechanism. The moving contact quickly leaves the stationary contact, thereby achieving the function of breaking the circuit; When the line
When a short circuit fault occurs in the circuit, the short circuit current causes the instantaneous release to act, and the iron core push rod pushes the lever to reset the locking mechanism, achieving the breaking function. When residual current or electric shock occurs in the circuit
When a fault occurs, the signal output by the zero sequence transformer triggers the conduction of the thyristor, causing the iron core of the residual current release to operate. The push rod pushes the circuit breaker to trip, causing the residual current to operate the circuit breaker in an extremely short time
Cut off the power supply within a certain period of time to achieve residual current protection function.
◆ Product features
The operating mechanism of the circuit breaker with residual current protection is equipped with an energy storage free release mechanism, which quickly closes the contacts and overcomes the adverse effects caused by the speed of manual operation of the handle, greatly improving the performance
Extend the service life of the product; During normal operation, the contact can only stay in the closed or open position.
◇ High breaking capacity, up to 6000A.
The zero sequence transformer and electronic discrimination control circuit components inside the residual current release have high performance, stable operation, and strong anti-interference ability, ensuring the reliable operation of the product.
Equipped with finger touch protection combination terminal blocks, high safety.
Equipped with finger touch protection combination terminal blocks, high safety.
The shell and components are made of high flame retardant, high-temperature resistant, and impact resistant plastics.
◇ The product has a small volume, light weight, compact structure, and modular design.
Unique appearance and reasonable utilization of spatial layout.
The product adopts guide rail installation, which is convenient and time-saving.

connection
Suitable for (10-50) mm wire connection, with a tightening torque of no more than 3.5N · m. Before installation, appropriate wires should be selected to connect the residual current operated circuit breaker to the circuit. The recommended cross-sectional area of the wires is shown in Table 3, and it should be checked whether the residual current operated circuit breaker matches the normal working conditions used.

Ordering Instructions

When placing an order, the following points should be indicated:
Product model and name: FSK1LE-125 residual current operated circuit breaker;
◆ Number of poles, such as single pole with two wires; Rated voltage, such as 230V; Rated current, such as 125A;
Rated residual operating current, such as 100mA; Order quantity, such as 50 units.
Example of ordering: FSK1LE-125 residual current operated circuit breaker single pole two wire 230V, 125A, 100mA, 50 units.