The new 3VA circuit breakers set new standards in terms of flexibility and variety of modular accessories. Standardized accessories suitable for use with several sizes of circuit breaker from all the 3VA ranges help to cut costs and save installation time.

3VA1 molded case circuit breakers

The new 3VA1 molded case circuit breakers reliably perform all the tasks required for line protection and starter protection.

Features

The key features of the 3VA1 series are:

• Compact design

• Depending on size: 1-pole to 4-pole versions

• Fixed version, plug-in version

• Thermal-magnetic trip units

• AC/DC applications

• No derating up to +50 °C

• Modular and easy-to-fit internal accessories with diverse functions

• Uniform accessories platform across all 3VA molded case circuit breakers

3VA2 molded case circuit breakers

The new 3VA2 molded case circuit breakers reliably perform all the tasks required for line protection, generator protection, motor protection and starter protection.

This series has been developed for applications with inceased requirements:

• Increased breaking capacity

• Very good selective protection response

• Integrated measurement function

• Connection to a fieldbus communication system

Features

• Compact design

• 3 and 4-pole versions

• Fixed-mounting, plug-in technology, draw-out technology

• Depending on size: Selective protection response at rated operating current interval 1: 2.5

• Electronic Trip Units

• Retrofit communication for ETU 5-series and 8-series

• Depending on the ETU: Integrated measurement function

• AC applications

• No derating up to +50 °C

• Modular and easy-to-fit internal accessories with diverse functions Uniform accessories platform across all 3VA molded case circuit breakers

The SIRIUS family of controls

The SIRIUS modular system with its components for the switching, starting, protection and monitoring of motors and industrial systems stands for the fast, flexible and space-saving construction of control cabinets.

3RT power contactors

Our power range:

• Contactors for switching motors:

  • Size S00: 3RT201 up to 7.5 kW

  • Size S0: 3RT202 up to 18.5 kW

  • Size S2: 3RT203 up to 37 kW

  • Size S3: 3RT204 up to 55 kW

  • Sizes S6 to S12: 3RT10 up to 250 kW

Standards

IEC 60947‑1, IEC 60947‑4‑1, IEC 60947‑5‑1 (auxiliary switches)

Ambient conditions

If the devices are used in ambient conditions which deviate from common industrial conditions (IEC 60721‑3‑3 "Stationary Use, Weather-Protected"), information must be obtained about possible restrictions with regard to the reliability and endurance of the device and possible protective measures.

Ratings of three-phase motors

The quoted rating (in kW) refers to the output power on the motor shaft (according to the nameplate). The power rating specifications of the contactors in kW (in accordance with IEC 60947-4-1, Table G) are guide values for 4-pole standard motors at 50 Hz AC and specified voltage (e.g. 400 V AC). The actual starting and rated data of the motor to be switched must be considered when selecting the units. The motor current, motor protection device and the permissible contactor current according to the utilization category must be aligned with each other.

Reliable, versatile and perfectly integrated.

All power distribution systems rely on a secure infeed of electrical energy. The 3WL air circuit breakers reliably protect electrical equipment from damage or fire resulting from short circuit, ground fault or overload failures.

The 3WL air circuit breakers are used as incoming feeder, tie, and outgoing-feeder circuit breakers in electrical installations in industry, buildings and infrastructure applications. They have the ability to communicate and can easily be integrated into higher-level control and energy management systems.

The 3WL air circuit breakers switch and protect motors, capacitors, generators, transformers, busbars and cables. The modular design and standardized range of accessories enable the circuit breakers to be adapted flexibly to different applications. UL 489-compliant versions are available for international use.

The 3WL air circuit breakers switch and protect motors, capacitors, generators, transformers, busbars and cables. The modular design and standardized range of accessories enable the circuit breakers to be adapted flexibly to different applications. UL 489-compliant versions are available for international use.

Siemens is the leading manufacturer of electric drive technology. With SINAMICS frequency converter technology, you can address each and every drive application – whether low voltage, medium voltage or DC. You can operate synchronous motors as well as induction motors according to the characteristics of the machine you are driving. Our variable frequency drives, electric motors and control systems for the variable-speed control of machines are perfectly coordinated with one another and can be very simply integrated into your existing system and automation landscape. Our frequency converters with integrated safety technology can be centrally installed and commissioned in control cabinets, mounted on walls or decentrally in distributed topologies. We have the optimum energy-saving variable frequency drives for each and every application. Whether for pumping, ventilating, moving, positioning, processing or machining. SINAMICS – simply my drive! 

Intelligent drive systems integrate smoothly into any automation environment, helping you speed up the processes of design, engineering, and plant integration, and saving power costs throughout the entire lifecycle. Digitally assisted drive technology is opening up a new dimension in transparency: Comprehensive data from motors and converters can be recorded, analyzed, and turned into added value. Analysis of this data, cloud-based as appropriate, provides new information that can be used to optimize processes, evaluate machine status, and arrange an ideal maintenance schedule. For you, this means a shorter time-to-market, more flexible engineering, and much less effort overall in implementing your project, while enjoying even greater plant availability and efficiency. 

The correct load cell for every nominal load

A wide selection of different designs: from platform load cells to bending and shear beam, s-type and compression cells. The different load cell series cover nominal loads from 0.3kg to 500t. Our range is rounded off by mounting units which supports a optimum alignment of the load cell, protect the load cell against overloads or transverse loads and which greatly simplify assembly. This is essential for the load cells to perform their best in terms of accuracy.

Wide range, simple installation – our load cells score points all along the line

Our load cells cover a wide range of nominal loads, from 0,3kg up to 500t. As a standard, most load cells comply with accuracy class C3 in accordance with OIML R60. Additionally we offer you a range of mounting units and accessories for our load cells.

The availability of machines and plants is a precondition for maximum productivity. Prolonged downtimes may not just be expensive but may also mean that customers begin to lose trust. Machines and plants should therefore be reliably protected against overload from the power supply system. In the event of a failure, motor starter protectors quickly disconnect the equipment from the supply, thus preventing expensive damage. The SIRIUS 3RV2 motor starter protector provides ideal protection. 

SITOP compact was developed to be an extremely space-saving power supply for the lower power range. It is especially suited to distributed applications in control boxes and in small control cabinets. Its high efficiency over the entire load range and low no-load loss make it exceptionally efficient. It is ideal for applications that are often in standby mode.