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Siemens Circuit Breakers Models

Circuit breaker refers to a switching device capable of closing, carrying and breaking the current under normal circuit conditions and closing, carrying and breaking the current under abnormal circuit conditions within a specified time. Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively fuzzy. Generally, those above 3kV are called high-voltage electrical appliances.
Circuit breakers can be used to distribute electrical energy, start asynchronous motors infrequently, and protect power lines and motors. They can automatically cut off the circuit when they have serious overload or short circuit and undervoltage faults. Their function is equivalent to a fuse switch Combination with overheating relay etc. Moreover, after breaking the fault current, there is generally no need to change parts. At present, it has been widely used.
In the generation, transmission and use of electricity, power distribution is an extremely important link. The power distribution system includes transformers and various high and low voltage electrical equipment, and low voltage circuit breakers are widely used electrical appliances.

Siemens circuit breaker is an important product of Siemens Automation and Drive Group.
Siemens Industrial Automation and Drive Technology Group (IA & DT) is one of the largest groups in Siemens AG and is an important part of Siemens ’industrial sector. IA & DT is the backbone of Siemens ’business in China, providing innovative, reliable and high-quality products, systems, applications and services in the fields of manufacturing automation, process automation and building electrical installation. We are committed to serving the Chinese market and customers, and are confident to provide the best service to our customers through our best efforts.
Siemens circuit breakers include compact circuit breakers, miniature circuit breakers, molded case circuit breakers, frame circuit breakers.

Siemens Circuit Breakers Models

The following is the product model and its introduction:

3VL160 3P, 3VL17 3P, 3VL250 3P, 3VL400 3P , 3VL630 3P, 3RV5041-4KA10, 5SP4391-8, 5SU9326-1CR, 5SU9336-1CR, 5SU9346-1CR, 5SU9356-1CR, 5SV9313-7CR, 5SY6210-7CC, 5SY6214-7CC, 5SY6205-7CC, 5SY6201-7CC, 5SY6215-7CC, 5SY6202-7CC, 5SY6203-7CC, 5SY6204-7CC, 5SY6206-7CC, 5SY6208-7CC, 5SY6213-7CC, 5SY6216-7CC, 5SY6220-7CC, 5SY6225-7CC, 5SY6232-7CC, 5SY6240-7CC, 5SY6250-7CC, 5SY6263-7CC, 5SY6280-7CC, 6AG1 321-1CH20-2AA0, 6AG1 321-1BH02-2AA0, 6AG1 315-2FH13-2AB0, 6ES7390-1AE80-0AA0, 6AG1 314-6CG03-2AB0, 6AG1 314-1AG13-2AB0, 6AG1 321-7BH01-2AB0, 6AG1 340-1CH02-2AE0, 6AG1 331-7PF11-4AB0, 

1. Compact circuit breaker
The 3VU13, 3VU16 circuit breakers are compact circuit breakers with rated currents up to 63A. Work according to the current limiting principle. It can be used for starting, disconnecting, overloading and short-circuit protection of motors or other loads; 3VU13 and 3VU16 can also be used as motor phase protection. When used for motor or equipment protection, the above circuit breakers are equipped with overcurrent instantaneous release and inverse time delay overload release. Since the starter combination device itself has overload protection, the 3VU16 used for the starter combination is only equipped with an overcurrent instantaneous release. The circuit breaker and contactor can be combined into a fuse-less combination starter.

Siemens miniature circuit breaker code designation method:
3VU13 0.1 ~ 25A
3VU16 1 ~ 63A
Example: 3VU1340-. MB00, each meaning is
3VU13 ------ serial code
40 ----------- Product code
M ------------ Product usage, M is for motor protection T is for primary protection of transformers with high inrush current C is for starter combination protection L is for line protection
B ------------- Current size, B-0.16A C-0.24A D-0.4A E-0.6A F-1A G-1.6A H-2.4A J-4A K-6A L-10A M-16A N-20A P-25A S-0.2A 16MP-32A 16MQ-40A 16MR-52A 16LS-63A
00 ----------- Number of normally open and normally closed contacts, 00 without auxiliary contacts 01 is 1 normally open 1 normally closed 02 is 2 normally open 0 normally closed 03 is 0 normally open 2 normally closed
The 3VU9131 series are circuit breaker accessory products. Such as:
3VU9 131-3AA00 auxiliary contact
3VU9 131-7AA00 short circuit fault display
3VU9 132 -0AB15 undervoltage release 15 for 50HZ 230V 25 for 50HZ 240V 17-50HZ 400V 18-50HZ 415V 23-60HZ 120V 24-60HZ 208V 26-60HZ 240V
3VU9 132 -0AB50 shunt tripping
3VU9 138-2AB00 current limiter
3VU9 138-1AA14 remote control mechanism
3VU9 133-1PA01 door chain operation mechanism
3VU9 133-2CA00 protective cover points IP54 IP55 2 protection levels
3VU9 168-0KA00 locking device
In addition, Siemens miniature circuit breakers also have 3RV series, which are all imported products.

2. MCB
Model example:
5SJ ------ Product serial number
SJ ------- circuit breaker series SJ is a conventional miniature circuit breaker SY is a compact miniature circuit breaker TE is an isolating switch SU is a miniature circuit breaker with leakage protection SD is a miniature circuit breaker with surge protection
6 -------- Product audit number
2 -------- the number of poles and 1, 2, 3
63 ------- Current size, there is also 0.5 1 2 4 6 10 13 16 20 25 32 40 50 63A
7CR ----- Production code of domestic factory

Siemens Mini Circuit Breaker (MCB) 5SN models include 6kA and 10kA breaking capacity, current levels cover 6A to 63A, pole number 1 pole to 4 pole and the trip curve has B, C, D, of which 10kA breaking capacity small breaking The device can use all accessories. Features: Dustproof and fingerproof In order to ensure the safety of the staff when installing the wiring, the insulation dustproof and touchproof design is used to increase the service life and minimize the potential risk of the contacts. Siemens miniature circuit breakers also have a unique sliding snap design, which makes the disassembly of the circuit breaker simpler, faster and more efficient.

The 5SN series of miniature circuit breakers have also changed a lot in terms of energy saving and efficiency, far lower than the actual power consumption measured by the IEC and the national standard, which is only about 1/3 to 1/2 of the mark definition, which has the effect of saving electricity. In this series, there is also a compact circuit breaker with a compact design, with a width of only 18mm. It also has A-type and AC-type residual current protection, saving space and providing more comprehensive protection against electric shock.

Instructions for use:
Due to the good material selection and good electrical performance, Siemens miniature circuit breaker 5SN series can be suitable for installation and use in plateau environment. It meets the requirements of GB / T20645-2006 standard.

Siemens 5SY30 small circuit breaker (compact)
1. The compact 1P + N 5SY30 small circuit breaker can cut the phase line and the neutral line at the same time. The neutral line does not provide protection and the single product is only 1 module 18 mm wide, which greatly saves installation space.
2. The auxiliary contact AS and signal contact FC can be assembled, and the accessories are common to other series of small circuit breakers, which can reduce a large inventory.
3. The way of up and down wiring can be used, and the use of compact dedicated busbars can save space in the distribution box.
4. Expansion terminals can expand the wiring capacity to 25 square millimeters.

Storage and transportation considerations
If Siemens 5SN series circuit breakers and accessories need to be stored for a long time (including warehouses and construction sites), if the storage environment is not properly controlled, it is easy to cause corrosion and rust damage to the metal and coating parts inside or outside the circuit breaker Therefore, you should pay attention to the following points when storing:
1. The miniature circuit breaker needs to be stored at a normal temperature of 20 degrees Celsius to 25 degrees Celsius in a dry environment (relative humidity is about 20% -30%), and the necessary sealing control is required for the environment with high humidity.
2. It should not be mixed with acidic volatile liquid or acidic gas, and it is not easy to store in an environment with too much dust.
3. For high-temperature, high-humidity or ultra-low temperature environments, small circuit breakers are also not easy to store for a long time, and need to be energized and used as soon as possible.
4. It is better not to connect the wires to the inlet and outlet ends of Siemens miniature circuit breakers before normal power-on use, to prevent the corrosion of the battery effect at the outlet of the terminal due to the long-term storage of the pre-wiring.

Siemens Circuit Breakers Models

3. Molded case circuit breaker
The common products of Siemens molded case circuit breakers are 3VL 3VF series circuit breakers
Model examples
3VL17 02-1DA33
Model definition:
3VL -------- Circuit breaker series, 3VL is the standard breaking capacity circuit breaker 3VF is the circuit breaker with thermal magnetic trip
17 --------- Short-circuit instantaneous setting current 17 is 300-1000A 27 is 300-1600A 37 is 1000-2500A 47 is 1000-4000A 57 is 1575-6500A 3VF series corresponds to 31 32 33 42 52 62
02 --------- Overload current 02-20A 03-32A 04-40A 05-50A 06-63A 08-80A 10-100A 12-125A 16-160A 20-200A 25-250A 31-315A 40 -400A 50-500A 63-630A
1DA33 ---- product order number and 1DA33 1DC33 1DD33 1DC36 including product breaking capacity and other parameters
Breaking capacity N H L when the voltage is 380-415V N is 40KA H is 70KA L is 100KA
Number of poles can be divided into 3P 4P
According to the applicability of the product, accessories such as auxiliary alarm switch, electronic release, shunt undervoltage release, motor operating mechanism, expansion terminal, cable connector, etc. are optional.
Dimensions L × H × D (mm):
3VL160 3P: 174.5 x 104.5 x 90.5 4P: 174.5 x 139.5 x 90.5
3VL250 3P: 185.5 x 104.5 x 90.5 4P: 185.5 x 139.5 x 90.5
3VL400 3P: 279.5 x 139 x 115 4P: 279.5 x 183.5 x 115
3VL630 3P: 279.5 x 190 x 115 4P: 279.5 x 253.5 x 115

Application of Siemens Molded Case Circuit Breaker 3VT8
Various models of 3VT molded case circuit breakers are suitable for the following applications:
1. Used as the input and output circuit breaker of the power distribution system;
2. Used as a switch and protection device for motors, transformers and capacitors;
3. Combined with lockable rotary operating mechanism and terminal cover, used as main switch and emergency stop switch.
3VT molded case circuit breaker is suitable for the following occasions:
1. Used for system protection (3 pole and 4 pole) overload and short circuit release can be used for the protection of each cable, wire and non-motor.
2. Used for motor protection (3-pole) overload and short-circuit release is suitable for direct starting and optimal protection of three-phase squirrel-cage motor.
Main features of circuit breakers: 3VT meets the high requirements of today's power distribution system with its economical and compact design. The device has the characteristics of complete series, space saving and easy operation. There are two types of thermal magnetic type (10A to 630A) and electronic type (250A to 630A).

Siemens circuit breaker 3VT meets the following standards:
1. GB / T 14048.1, IEC 60947-1MOD;
2. GB / T 14048.2, IEC 60947-2IDT;
3. GB / T 14048.4, IEC 60947-4-1MOD;
4. GB / T 14048.5, IEC 60947-5-1MOD.
The circuit breaker can withstand all kinds of climatic tests. This circuit breaker is designed to be used in closed places without harsh working conditions (such as dust, corrosive steam and harmful gases). When installing in dusty and humid places, a suitable enclosure must be provided. All Siemens molded case circuit breakers with thermal magnetic releases meet the use category A, and all with electronic releases meet the use category B.

4. Frame circuit breaker
3WN6 3WN1 3WN 3VT series frame circuit breaker
Model example:
3WN6-1600 / In 1250 3P B + accessories
3WN6 --------- Product serial number
1600 ---------- frame current, other optional 630 800 1000 1250 1600 2000 2500 3200A 3WN1 series is 4000 5000 6000A
1250 --------- Setting current Ir setting range
Rated current Trip current setting range
630A 126-630A
800A 320-800A
1000A 400-1000A
1250A 500-1250A
1600A 640-1600A
2000A 252-2000A
2500A 1000-2500A
3200A 1280-3200A
4000A 1600-4000A
5000A 2000-5000A
6300A 2520-6300A
3P ------------ Number of poles, divided into 3P 4P 3WN1 series fixed maximum 4000A withdrawable maximum 6300A 4P maximum 5000A
B ------------- Type of electronic release
3WN6 series
V type: two-stage protection ---- short-circuit short delay, short-circuit instant
Type B: Three-stage protection ---- long delay, short circuit short delay, short circuit instantaneous
Type C / G: four-stage protection --- long time delay, short circuit short time delay, short circuit instantaneous, ground fault
Type D: Three-segment protection with liquid crystal display, optional communication function
E / F type: four-segment protection with liquid crystal display, optional with communication function
Type N: Three-section protection with liquid crystal display, optional communication function, energy management function
Type P: four-segment protection with liquid crystal display, optional communication function, energy management function
3WN1 series
Type P: Two-stage protection zone signal transmission
Type M: Three-section protection zone signal transmission
Type R: three-stage protection band signal transmission, liquid crystal display
Type S: Four-section protection zone signal transmission
V type: four-section protection belt model sending, LCD display

Siemens Circuit Breakers Models

Attachment description:
Without explanation:
1. With electric closing coil AC220V / DC220V
2. With energy storage motor AC220V / DC220V
3. Auxiliary contact 2 normally open + 2 normally closed
4. Without shunt tripping without undervoltage release
When the attachment changes:
1. The energy storage motor and electrical closing coil must indicate the voltage category and voltage level
2. Shunt and undervoltage releases need to indicate the voltage category Voltage class
3. Number of auxiliary contacts
4. Mechanical chain
5. Communication function, energy management
6. Counters, position signal contacts and other accessories

Siemens PLC maintenance
1. Maintenance procedures, regular testing and adjustment of equipment
(1) Check the connection of the terminal blocks in the PLC cabinet every six months or quarters, and if there is a loose place, reconnect it in time
(2) Re-measure the working voltage of the power supply to the host in the cabinet every month;
2. Provisions for regular cleaning of equipment
(1) Clean the PLC every six months or quarters, cut off the power supply to the PLC, remove the power supply rack, CPU motherboard and input / output board in sequence, and then install them in situ after purging and cleaning. After all connections are restored, power on and start the PLC host. Carefully clean the sanitation in the PLC box; (2) Replace the filter below the power supply rack every three months;

3. Preparing for overhaul, overhaul procedures
(1) Prepare tools before maintenance;
(2) In order to ensure that the function of the components does not fail and the template is not damaged, you must use protective devices and make anti-static preparations carefully;
(3) Contact the dispatcher and the operator before the maintenance, and hang the maintenance card at the maintenance board;
Fourth, equipment disassembly order and method
(1) When shutting down for maintenance, more than two persons must be monitored;
(2) Turn the mode selection switch on the front panel of the CPU from "Run" to "Stop" position;
(3) Turn off the main power supply of the PLC, and then turn off the other power supply to Mosaka;
(4) Remove the power cable connected to the power supply rack after clearing the line number and connection position, and then remove the screws connecting the power supply rack to the cabinet, and the power supply rack can be removed;
(5) The CPU motherboard and I / 0 board can be removed after rotating the screws under the template;
(6) Install in reverse order;
V. Maintenance process and technical requirements
(1) When measuring voltage, use a digital voltmeter or a universal meter with an accuracy of 1%
(2) The power supply rack and CPU motherboard can only be removed when the main power supply is cut off;
(3) Before the RAM module is removed from the CPU or inserted into the CPU, the power of the PC must be disconnected, so as to ensure that the data is not confused;
(4) Before removing the RAM module, check whether the module battery is working properly. If the battery fault light is on, the PAM content of the module will be lost;
(5) The main power supply should also be turned off before the input / output board is removed, but the I / 0 board can also be removed while the programmable controller is running if production requires, but the QVZ (timeout) light on the CPU board lights up;
(6) When inserting or inserting the template, take extra care, handle it gently, and move away the static-generating items;
(7) The replacement components must not be powered on;
(8) After the maintenance, the template must be installed in place

Siemens Circuit Breakers Models

Working principle:
The circuit breaker is generally composed of a contact system, an arc extinguishing system, an operating mechanism, a trip unit, a housing, etc.
When a short circuit occurs, the magnetic field generated by a large current (generally 10 to 12 times) overcomes the reaction force spring, the trip unit pulls the operating mechanism, and the switch trips instantaneously. When overloaded, the current becomes larger, the heat generation is increased, and the bimetallic sheet deforms to a certain extent to promote the action of the mechanism (the greater the current, the shorter the action time).
There is an electronic type, which uses a transformer to collect the current of each phase, and compares it with the set value. When the current is abnormal, the microprocessor sends a signal to make the electronic tripper drive the operating mechanism.
The function of the circuit breaker is to cut off and connect the load circuit, and cut off the fault circuit, to prevent the accident from expanding, and to ensure safe operation. The high-voltage circuit breaker must break 1500V, current 1500-2000A arc, these arcs can be stretched to 2m still continue to burn without extinguishing. Therefore, arc extinction is a problem that high voltage circuit breakers must solve.
The principle of arc blowing and arc extinguishing is mainly to cool the arc and weaken the thermal dissipation. On the other hand, by blowing the arc and lengthening the arc to strengthen the recombination and diffusion of the charged particles, at the same time, the charged particles in the arc gap are blown away to quickly restore the dielectric strength of the medium.
Low-voltage circuit breakers, also called automatic air switches, can be used to connect and disconnect load circuits, and can also be used to control motors that start infrequently. Its function is equivalent to the sum of some or all of the functions of electrical appliances such as knife switch, overcurrent relay, loss of voltage relay, thermal relay and leakage protector, and it is an important protection appliance in low voltage distribution network.
Low-voltage circuit breakers have a variety of protection functions (overload, short circuit, undervoltage protection, etc.), adjustable action value, high breaking capacity, easy operation, safety and so on, so they are widely used. Structure and working principle The low-voltage circuit breaker is composed of an operating mechanism, contacts, protection devices (various releases), and an arc extinguishing system.

 Siemens Circuit Breakers Models


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