Siemens Air Circuit Breakers
Built upon the foundation of the Siemens WL, 3WA improves upon the proven quality to ensure years of operability. Tested beyond UL standards the 3WA is rated for 10,000 operations. This is accomplished through exacting tolerances, elimination of plastic parts and fasteners and attention to quality. Starting with vendors and ending at delivery, no corners are cut so that the 3WA is the most reliable breaker in low voltage distribution.
UL 1066 3WA3
3WA low voltage power circuit breakers are generally intended to provide main and feeder circuit protection in accordance with UL1066 Standard for Safety for Low-Voltage AC and DC Power Circuit Breakers Used in enclosures. Presently, there is not an equivalent CSA standard to UL 1066, and therefore these circuit breakers do not carry a CSA listing mark. These circuit breakers are constructed in compliance with ANSI/IEEE C37.13, and performance tested in accordance with ANSI C37.50. Throughout this document any reference to UL1066 will also mean ANSI C37 Certified. This versatile family of power circuit breakers is acceptable for use within low voltage switchgear (i.e. ANSI/IEEE C37.20.1, ANSI/IEEE C37.20.7, and UL 1558), low voltage switchboards (i.e. UL 891), low voltage motor control centers (i.e. UL 845), and other types of industrial control equipment (i.e. UL 508 series). Certain options and ratings may be limited may be limited in comparison to the UL 489 Listed circuit breakers.
General Features
- 3 Frame Sizes: Three frame sizes that cover a wide range of continuous current ratings allow for flexible exchange of breakers to other compartments and reducing the footprint of the breaker enclosures
- Consistent Footprint: the 3WA frame size 2 and 3, are the same footprint as the WL breakers, making retrofit simpler
- 3 Standards: The 3WA breaker is UL certified for either UL489 (3WA2) or UL 1066/ IEC60947-2 (3WA3) to meet the needs of any application
- Ready-to-close Indication: Built in check points of the mechanical operator provide an additional layer of safety and external controls by inhibiting the breaker from closing until certain conditions are satisfied
- 100% Rating: All model breakers are designed for continuous operation at their maximum current ratings without de-rating the frame
- Bi-directional protections: Top or bottom supply feed without any hardware configuration changes
- DAS+ Standard Supply: All ETU offerings come with DAS+ integrated and ready to use as a separate parameter set
Other Key Features:
Our 3WA breakers undergo rigorous testing, resulting in an impressive mean time between failure (MTBF) of approximately 350 years, with no maintenance required on internal parts. Tested at extreme temperatures of -50 degrees Celsius, the lubrication ensures minimal wear and tear, extending the breaker's lifespan. We also exceed standard testing for breaker coils, ensuring they last the entire lifetime without maintenance.
This robust testing significantly reduces waste and lowers the carbon footprint, making the 3WA breaker an environmentally friendly choice. Additionally, the integrated racking handle makes it easy for users to rack the breaker in and out of the cradle. This combination of durability, environmental benefits, and user-friendly design makes the 3WA breaker an excellent choice for those seeking to reduce downtime on critical applications and reduce maintenance costs.
Assembled View
Breaker Features:
1. Option Plug
2. DAS+ LED indicator
3. ETU with backlit display
4. USB-C interface for power and data
5. Ready to Close Indicator
6. Secondary Disconnects
7. Charging Handle
Electronic Trip Unit
Trusted Electronic Platform
Siemens ETU300 and ETU600 electronic trip units are both built on a trusted electronic platform that provides reliable and customizable protection for low voltage electrical systems. These trip units are designed to meet the needs of a wide range of applications and provide a high level of protection against overcurrent and other electrical faults. The ETU300 and ETU600 trip units feature advanced microprocessor technology and a range of enhanced protection functions that help to ensure the safety and reliability of electrical systems. Additionally, both trip units come equipped with DAS+ as a standard feature, which allows the trip settings to be reduced when personnel are present inside the arc flash boundary.
Protection and Metering Packages
To take advantage of its high-speed microprocessors and versatile design, the ETU600 electronic trip unit can be equipped with several enhanced protection metering packages to adapt it to any demanding application. The protection-metering packages are referred to as PMF levels in reference to the standard IEC 60364-8-1. That standard defines what is included in each of the three levels.
The PMF packages give ultimate control over which 3WA trip unit features are available. The different levels of protection-metering functionality can be specified when the breaker is ordered or as separate upgrade licenses at a later time. The ETU600 with protection metering packages is easily customizable and updateable.
LS Electric Susol UL ACB
The premium Susol UL Air Circuit Breaker (ACB) is designed to meet customer requirements with high interrupting capacity, a lineup up to 6000 A, and a frame structure optimized for switchboard design. The Susol UL ACB is equipped with advanced trip relays that support measurement, diagnostics, analysis, and communication. When used to complete a power monitoring or protection coordination system, the products provide an integrated solution for power distribution applications.
Key Features
Efficiency
- Modular, compact design improves space efficiency.
- High interrupting performance and low power loss support stable power management.
Convenience
- Replaceable trip units and plugs simplify maintenance. Multiple connection options and draw-out construction provide design flexibility.
- Field-installable accessories improve installation efficiency.
Reliability
- Supports ratings up to 130 kA and 847 V AC.
- Electronic trip technology enables precise protection and metering.
- Tested for use in demanding industrial environments to support reliable application.
Smart Features
- Supports Modbus, BLE, NFC, and USB connectivity.
- Integrates protection, metering, diagnostics, and communication functions.
Lineup
LS Electric Susol Molded Case Circuit Breaker
High-performance molded case circuit breaker for up to 150kA
- Rated current: 16~1600A
- Breaking capacity (Icu): 37~150kA
- Service breaking capacity (Ics): 100%
Features
Susol MCCB
- Series : TE, TD, TS
- AF : 100AF, 160AF, 250AF, 400AF, 600AF, 800AF, 1000AF, 1250AF, 1600AF
- Pole: 2P, 3P, 4P
- Trip unit
- Thermal magnetic trip unit : FTU, FMU, ATU, MTU
- Electronic trip unit : ETS, ETM, OCR
- standards :
- IEC 60947-2 CB
- GB 14048.2 CCC
Susol Switch-Disconnector
- Series : TD, TS
- AF : 100AF, 160AF, 250AF, 400AF, 600AF, 800AF, 1000AF, 1250AF, 1600AF
- Pole: 2P, 3P, 4P
- standards :
- IEC 60947-3 CB
- GB 14048.2 CCC
Description
ABB Air Circuit Breakers
SACE EMAX 2/E
High-performance air circuit breakers over 690V. ABB SACE Emax 2/E circuit breakers can control many demanding applications effectively and simply, with the highest availability and continuity of service.
One Range, Many Advantages
- TOP PERFORMANCES
- The SACE Emax 2/E range extends Emax 2 performances to higher voltages with solid breaking capacities, achieving up to 100kA at 800V, 90kA at 900V, 85kA at 1000V, and 85kA at 1200V (up to 1380V) to better support increasing power needs in demanding applications around the world.
- ENERGY EFFICIENCY
- The SACE Emax 2/E range is here to support the energy efficiency trend in electricity generation and distribution. Achieving a higher service voltage of 1200V AC (up to 1380V) helps to cut power losses and make our planet a better place. Full compatibility with ABB Ability™ Energy and Asset Manager allows data processing from electrical equipment to optimize the system performance.
- FULL FLEXIBILITY
- The SACE Emax 2/E range offers solutions to find the best fit for all applications. With four sublines (/E9, /E10, /E12 for IEC and -A/E for UL) and four circuit breaker frames, it is easier to cover specific application needs with the right voltages at the best ratings. All versions are available in fixed and withdrawable version and can be fitted with electrical and mechanical accessories in common with the standard SACE Emax 2 range.
- SPACE SAVING
- The SACE Emax 2/E is the most compact circuit breaker on the market. SACE Emax 2/E offers the highest performance in the small space. Its compact dimensions allow the size of switchboard to be reduced by up to 30 percent, compared to a standard solution.
- RENEWABLE ORIENTED
- The SACE Emax 2/E range supports renewable energy growth with increased performances for wind and solar applications, reaching up to 1380V AC (equivalent to, e.g., 1150V + 20% tolerance) and covering single-pole short-circuit testing at 800-900V (IT networks). Performances are guaranteed in a wide range of operating temperatures and installation altitudes.
- CONNECTIVITY
- SACE Emax 2/E range of circuit breakers can be integrated into all automation and energy management systems to improve productivity and energy consumption, and to carry out remote service. All circuit breakers can be equipped with embedded communication modules that offer Modbus, Profibus, and DeviceNet™ protocols as well as the modern Modbus TCP, Profinet, EtherNet™.
Installation
The SACE Emax 2 /E range is based on standard Emax 2 frame sizes. In this section we present the main differences related to /E performances.
Altitude
SACE Emax 2 air circuit breakers guarantee rated performances up to 2000 meters above sea level. Beyond this altitude, the performance of the circuit breakers is subject to derating, which can be measured by means of the variation in maximum rated service voltage and rated uninterrupted current.
Insulation Distances
The circuit breakers can be connected to the main power system using the most common configurations and dimensions of copper bars.
- Insulation distance of installation cubicle
Connection and Dimensions
The SACE Emax 2 circuit-breakers offer a wide variety of terminals, thereby always guaranteeing an optimal solution for connection to the power circuit.
SACE EMAX 2/E9 AND /E10
Range
IEC circuit breakers at 800-900V and 1000V
Want to see more?
Download the ABB SACE EMAX 2/E Air Circuit Breakers Technical Catalog.
Download the Siemens 3WA Power Circuit Breakers Technical Document.
Download the Power Design Switchboards Technical Document.
Download the Siemens Molded Case Circuit Breakers Technical Document.