SACE EMAX 2 VF SWITCH DISCONNECTORS FOR VARIABLE FREQUENCY APPLICATIONS
Designed for renewable and industrial systems, SACE Emax 2 VF combines variable-frequency performance with the footprint, flexibility, and accessory compatibility of the standard Emax 2 platform.
A SPECIALIZED RANGE FOR VARIABLE FREQUENCY SYSTEMS
SACE Emax2 VF is designed for installations where variable frequency and high voltage conditions require a dedicated switch-disconnector solution. The SACE Emax 2 VF switch-disconnector range includes two 900V versions covering low-frequency (5–60 Hz) and mid-frequency (50–210 Hz) applications, complemented by the E12 model rated at 1,200V for extended frequency coverage (3–160 Hz).Derived from the corresponding Emax 2 automatic circuit breaker platform, the range keeps the same dimensions and accessory logic while addressing the specific needs of wind power, generator-based systems, and demanding renewable applications.
PRODUCT VARIANTS
<p>Dedicated low-frequency and mid-frequency switch-disconnectors, our SACE Emax 2 VF delivers optimized performance for renewable energy systems, without compromising footprint or compatibility. Same Emax 2 reliability, tailored for the applications that matter. All three variants are CCC certified.</p>
SACE Emax 2/E9/LF MS
The low-frequency version is designed for variable frequency applications operating in between 5-60Hz and certified at 900 V according to IEC 60947-3. It is a strong fit for renewable systems and generator-related installations that need a dedicated switch-disconnector while retaining the mechanical footprint and accessory compatibility of standard Emax 2. Available in fixed and withdrawable execution, this version supports flexible panel design and maintenance strategies without forcing a different platform architecture.
Key benefits
- Frequency coverage in between 5-60Hz
- Fixed or withdrawable execution
- Same footprint and accessories as standard Emax2
- Suited to renewable and wind applications
Typical applications
- Wind turbines
- Wind power systems
- Renewable generation skids
- Generator isolation panels; High-altitude installations
Technical specifications
- IEC 60947-3 compliance + CCC approval
- Rated service voltage Ue: 900 V
- Rated current options up to 4000 A
- Frequency range: 5-60Hz
- Rated short-time withstand current Icw: 75 kA (1 s)
- 3 poles, orientable terminal configuration
SACE Emax 2/E9/VF MS
The mid-frequency version is developed for applications operating well beyond standard low-frequency conditions and is certified at 800 V according to IEC 60947-3. It is intended for installations where converter-based systems demand a switch-disconnector designed specifically for higher-frequency performance. Available in fixed execution, it gives designers a focused solution for demanding variable frequency duty while preserving the familiar Emax 2 platform logic and accessory ecosystem.
Key benefits
- Frequency coverage in between 50-210 Hz
- Fixed compact execution
- Same footprint and accessories as standard Emax 2
- Suitable for demanding converter-based applications
Typical applications
- Variable frequency renewable systems
- Wind power installations
- Converter-based generator applications
- Industrial power systems with non-standard frequency profiles
Technical specifications
- IEC 60947-3 compliance + CCC approval
- Rated service voltage Ue: 800 V
- Rated current options up to 4000 A
- Frequency range: 50-210Hz
- Rated short-time withstand current Icw: 48 kA (1 s)
- 3 poles, orientable rear terminal option
SACE Emax 2/E12/VF MS
The Emax2/E12/VF MS is designed for demanding variable frequency applications operating across a broad range from 3 to 160 Hz, certified at 1200 V according to IEC 60947-3 and holding CCC approval. It is the ideal choice for high-power wind turbine architectures, industrial processes, and generator installations requiring a dedicated switch-disconnector capable of handling both sub-synchronous and high-frequency conditions. Available in fixed and withdrawable execution, this version retains the same mechanical footprint and full accessory compatibility of the standard Emax2 range.
Key benefits
- Broadest frequency coverage in the range: 3–160 Hz
- Certified at 1200 V — highest voltage in the Emax2 VF range
- Fixed or withdrawable execution
- Same footprint and accessories as standard Emax2
Typical applications
- Wind turbines (full-power converter architectures)
- Industrial variable frequency drives and generator panels
- Renewable generation skids requiring extended frequency range
- High-voltage generator isolation panels
Technical specifications
- IEC 60947-3 compliance + CCC approval
- Rated service voltage Ue: 1200 V
- Rated current options: 2500 A / 3200 A / 4000 A
- Frequency range: 3–160 Hz
- Rated short-time withstand current Icw: 85 kA (1 s) / 75 kA (3 s)
- 3 poles, orientable terminal configuration
WHY CHOOSE SACE EMAX 2 VF
Variable frequency ready
<p>Dedicated low-frequency and mid-frequency versions help match the device to real operating conditions rather than forcing a standard solution into a specialized duty.</p>Renewable power fit
<p>The range is positioned for wind power and other applications where generator behavior, overspeed conditions, and grid-connection requirements shape the switching architecture.</p>Emax 2 compatible
<p>Because the switch-disconnectors are derived from the corresponding Emax 2 automatic circuit breakers, panel builders can work within a familiar dimensional platform.</p>Installation flexibility
<p>Fixed and withdrawable execution are available where needed, helping support different maintenance and switchgear design strategies.</p>Accessories
<p>Full compatibility with standard Emax 2 accessories helps simplify standardization, engineering, and spare-parts management across installations.</p>TECHNICAL DATA
Use the key data below for a quick range overview, then consult the brochure and technical catalog for detailed application verification. Because variable frequency applications are highly specific, final selection should always be confirmed against the actual system profile.
Rated service voltage Up to 1200V
<p>Voltage depends on the selected version.</p>Frequency coverage From 5Hz to 210HZ
<p>To be properly selected according to the frequency needed</p>Rated current range 2500 A to 4000 A
<p>Current ratings vary by version.</p>Number of poles 3
<p> </p>Standard IEC 60947-3
<p>Certified as switch-disconnectors suitable for isolation.</p>Frame Dimension 371 × 270 × 384
<p>(mm). These dimensions remain constant across all E4.2 rated currents</p>FREQUENTLY ASKED QUESTIONS
SACE Emax 2 VF is ABB’s range of air switch-disconnectors for variable frequency applications. It is designed for installations where frequency and voltage conditions require a dedicated solution, while still retaining the footprint and accessory compatibility of the standard Emax 2 platform.
The offer presented on this page is a switch-disconnector range for variable frequency applications. It is derived from the corresponding Emax 2 automatic circuit breakers, which is why it shares dimensions and accessories, but its functional positioning on this page is as a switch-disconnector suitable for isolation.
The low-frequency version is designed for applications in the range 5-60Hz and is certified at 900 V, with fixed and withdrawable execution options. The mid-frequency version is designed for applications In the range 50-210Hz, is certified at 800 V, and is available in fixed execution.
Yes. One of the key advantages of the range is full compatibility with standard Emax 2 accessories, which helps simplify engineering, panel design, and spare-parts management across installations.
Yes. SACE Emax 2 VF is specifically designed for wind power applications. ABB positions the range for renewable energy generation, where variable frequency switching is essential. TheE12/VF MSversion is particularly suited for modern high-power wind turbines, offering 1200 V rated voltage and frequency coverage from 3–160 Hz.
Execution depends on the selected version. The low-frequency version is available in fixed and withdrawable execution, while the mid-frequency version is available in fixed execution.