MS/DC-E
A high-capacity 1500V DC switch-disconnector range for photovoltaic systems, energy storage systems, and other advanced DC installations.
A CIRCUIT-BREAKER-BASED SWITCH-DISCONNECTOR RANGE FOR MODERN DC SYSTEMS
SACE Emax 2 MS/DC-E extends the Emax 2 platform into high-demand DC applications with a dedicated air switch-disconnector solution for systems up to 1500V DC. Designed for photovoltaic plants, energy storage systems, and other DC networks, it combines global approvals, high short-time withstand performance, and broad installation flexibility in a familiar Emax 2 footprint. For specifiers evaluating ABB DC breaker solutions for 1500V DC systems, this page covers the MS/DC-E switch-disconnector range and its main configurations.
VARIANTS FOR DIFFERENT DC REQUIREMENTS
<p>SACE Emax2 MS/DC-E is available in IEC, CCC and UL certification to match different standards, current rating and isolation requirements in 1500V DC systems</p>
IEC range for demanding DC installations
The IEC range is developed for installations up to 1500V DC and 4000 A, with short-time withstand current up to 100 kA. It is compliant with DC-PV2 according to IEC 60947-3 Annex D, making it suitable for demanding photovoltaic and other high-current DC applications.
Key technical benefits
- Up to 1500V DC and 4000 A in an E4.2 frame
- DC-PV2 compliant for demanding PV duty
- Short-time withstand current up to 100 kA (for 1s)
- Flexible single- or dual-polarity configuration
Typical Applications
- Photovoltaic plants
- Energy storage systems
- Industrial DC distribution
UL range for PV and battery system
The UL range covers 1500V DC applications in compliance with UL489B for photovoltaic systems and UL489F for battery power supplies. It offers rated current up to 2500 A for UL489B and UL489 versions, and up to 3200 A for UL489B only, with short-time withstand current up to 100 kA.
Key technical benefits
- 1500V DC up to 3200A in an E4.2 frame coverage for UL projects
- PV and battery power supply applications
- Up to 100 kA (for 1s) short-time withstand current
- Based on the Emax 2 platform
- Global multi-standard version IEC, UL and CCC compliant
Typical applications
- Photovoltaic systems
- Battery energy storage systems
- OEM DC switchgear
DC-20 disconnector for high-current isolation
For applications focused on isolation, SACE Emax 2 MS/DC-E is also available as a utilization category DC-20 disconnector up to 6000 A in an E4.2 frame. This version is certified according to IEC 60947-3 to guarantee isolation up to 1500V DC.
Key technical benefits
- Isolation up to 1500V DC
- Current rating up to 6000 A in an E4.2 frame
- Suitable for high-current DC isolation points
- Based on the Emax 2 platform
Typical applications
- High-current DC isolation in renewable and large DC installations
WHY CHOOSE SACE EMAX 2 MS/DC-E FOR 1500V DC SYSTEMS
Ready for global markets
<p>IEC, UL and CCC compliant versions help simplify specification across international projects and reduce the need to manage different product concepts for different markets.</p>Made for 1500V DC
<p>The range has been developed for modern high-voltage DC systems, including utility-scale photovoltaic and fast-growing energy storage applications where 1500V DC is increasingly standard.</p>Handles high fault currents
<p>With short-time withstand current up to 100 kA(1s), the range supports demanding system conditions and provides confidence in high-power installations.</p>Flexible configurations
<p>Single-polarity and dual-polarity configurations, fixed or withdrawable execution, and flexible terminal arrangements help adapt the device to different switchgear and panel layouts.</p>Platform compatibility
<p>Compatibility with standard Emax 2 accessories helps simplify engineering, spare parts management, and product familiarity across projects.</p>Fit for modern DC systems
<p>From solar and energy storage to marine, transportation, EV charging, and DC distribution in buildings, the range addresses a broad set of high-rating DC use cases.</p>TECHNICAL DATA
Rated voltage Up to 1500V DC
<p>Developed for high-voltage DC installations in photovoltaic, ESS, and other advanced DC systems.</p>IEC rated current Up to 4000 A
<p>Available in IEC versions for high-current DC installations.</p>UL rated current Up to 2500 A / 3200 A
<p>Up to 2500 A for UL489B and UL489 versions; up to 3200 A for UL489B only.</p>DC-20 disconnector current Up to 6000 A
<p>Available where high-current isolation is the primary requirement in an E4.2 frame</p>Short-time withstand current Up to 100 kA ( for 1s)
<p>Supports demanding DC installations in both IEC and UL-aligned configurations.</p>Utilization category DC-PV2 / DC-20
<p>DC-PV2 applies to the IEC switch-disconnector range for demanding PV duty; DC-20 applies to the dedicated switch disconnector at 6000A.</p>Space saving 30%
<p>Optimize switchboard layout and reduce panel footprint</p>FREQUENTLY ASKED QUESTIONS
Both. With the dedicated shorting busbar kits, all four poles can be connected in series to isolate a single-polarity source, or arranged in two series pairs for dual-polarity sources. This flexibility helps designers adapt the device to different DC system architectures.
Yes. SACE Emax 2 MS/DC-E is available in fixed and withdrawable executions. It also supports top-side or bottom-side supply and load terminals, along with horizontal or vertical terminal orientation, which helps simplify switchgear and panel design.
Yes. The range also includes a DC-20 disconnector version up to 6000 A for applications where guaranteed isolation is the main requirement. This version is based on the E4.2 MS/DC-E and is certified according to IEC 60947-3 in DC-20 utilization category.
Typical applications include utility-scale solar plants, battery energy storage systems, marine and transportation DC systems, EV charging infrastructure, and DC distribution in buildings. These sectors increasingly require higher DC ratings, flexible configuration, and internationally recognized compliance options.