Static Transfer Switches
TwinSource
DCC-II RMSTS
DCC-II is a single-phase, two-pole rack-mount static transfer switch for converting single-corded rack equipment to two power sources in critical IT, telecom, and industrial control applications. Its solid-state SCR design transfers in one-quarter cycle at any source phase angle. The 4U unit is rated 30, 40, or 50 A at 120, 208, 220, 230, or 240 V and 50/60 Hz, with 22 kA short-circuit withstand.
Product details
Key features
- Solid-state SCR transfer at any source phase angle
- Plug-in electronic module works with an internal maintenance bypass
- Redundant logic power supplies and cooling fans
- User-adjustable power-quality thresholds and source preference
Key specs
- Type
- Single-phase 2-pole rack-mount static transfer switch (RMSTS)
- Current rating
- 30, 40, 50 A
- Voltage
- 120, 208, 220, 230, 240 V, 1-phase
- Frequency
- 50/60 Hz
- Poles
- 2
- Sense and transfer time
- 1/4 cycle
- Short circuit withstand
- 22 kA
- Module
- Plug-in hot-swappable electronic module; internal maintenance bypass
- Redundancy
- Redundant logic power supplies and redundant fans
- MTBF (manufacturer stated)
- Calculated > 1 million hours; predicted > 50 million hours
- MTTR (manufacturer stated)
- < 2 minutes
- Form factor
- H 7 in / 178 mm, W 19 in / 483 mm, D 21 in / 526 mm
- Weight
- 49 lb / 23 kg
- Operating temperature
- 0 to 40 °C, 0 to 95% RH non-condensing
- Standards
- TUV certified to UL 1008 and CSA
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