UL DC Switch Disconnector

The Susol UL DC Switch Disconnector is 1500 V DC rated and designed for PV and ESS DC power systems. With ratings up to 4000 A and 100 kA/1 s, the disconnect switch supports stable operation and flexible system design in high-voltage DC power applications. Available in fixed and draw-out configurations, this unit provides flexibility during installation for a range of DC power distribution systems.

Rated Maximum Voltage: Up to 1500 V DC
Rated Current: 800 – 4000 A
Short Circuit Withstand Current: Up to 100 kA/1 s

Key Features

Efficiency

Designed to handle high-capacity DC currents for stable power system operation. High interrupting performance supports system reliability and operating efficiency.

Convenience

Enables seamless circuit protection for DC power equipment, supporting system uptime and operation.

Reliability

Short-time withstand current performance up to 150 kA supports application in power systems requiring high reliability. Testing based on IEC 60947-3 supports stable operation.

System Compatibility

Structural compatibility with ACBs simplifies system configuration. A common platform supports easier design and application across related systems.

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Lineup

Type	UDA-08D ... UDA-25D	UDA-08E ... UDA-40E
Ampere Frame (AF)	800 / 1000 / 1250 / 1600 / 2000 / 2500	800 / 1600 / 2000 / 2500 / 3200 / 4000
Rated Short Circuit Withstand Current (kA)	85 kA	100 kA
Rated Nominal Voltage	DC 1250 V (4P) / DC 800 V (3P)	DC 1250 V (4P) / DC 800 V (3P)
Rated Maximum Voltage	DC 1500 V (4P) / DC 1000 V (3P)	DC 1500 V (4P) / DC 1000 V (3P)
Version	Fixed / Draw-out	Fixed / Draw-out
Standard	UL 489B, UL 489F	UL 489B, UL 489F

Downloads

CatalogsDec 16, 2025

[DC UL DSU]

[DC_UL_DSU]_EN_C06032-05-202512.pdf (33.31MB)

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