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Eaton’s metal-enclosed switch and breaker (MSB) provides safe, reliable switching and fault protection for medium-voltage switchgear applications. Combining a visible load-break disconnect switch with the capabilities of a fixed-mounted vacuum circuit breaker and control devices, the 5–15kV switchgear increases system protection and improves coordination with upstream and downstream devices.
Metal-enclosed switchgear accommodates voltages from 1kV to 15kV, up to 1200A continuous current and up to 40kA short-circuit tolerance
Designed for deployment in new and retrofit substation installations
Can be used as the primary (main) device, integrated with fused feeder switches, or as primary protection in single-ended substations
Indoor and outdoor configurations available
Type MEB vacuum switchgear meets or exceeds the following industry standards: ANSI/IEEE C37.20.3. ANSI/IEEE C37.20.4, ANSI C37.22, ANSI C37.57, ANSI C37.58, NEMA SG5, NEMA SG6, CSA 22.2 No. 31. CSA listed for Canada and US markets.
| RATED MAXIMUM VOLTAGE | 4.76 kV, 15 kV | |
| CONTINUOUS CURRENT | 600 A to 2000 A | |
| INTERRUPT RATING | Up to 40 kA rms symmetrical | |
| BASIC IMPULSE LEVEL (BIL) | 4.76 kV class – 60 kV peak, 15 kV class – 95kV peak |
| ANSI/IEEE STANDARD | C37.20.3, C37.20.4, C37.22, C37.57, C37.58 | |
| NEMA | SG-5, SG-6 | |
| CSA | C22.2 No. 31 | |
| THIRD-PARTY APPROVAL/RECOGNITION | UL, CSA available for most ratings | |
| SEISMIC QUALIFICATION | IBC, CBC |
| ACCESS | Front & rear options | |
| INSULATING MEDIUM | Air | |
| BUS INSULATION | Optional | |
| BUS SUPPORTS | Glass polyester | |
| ENCLOSURE TYPE | Indoor & outdoor | |
| INDOOR SECTION DIMENSIONS (TYPICAL) | 914mm (36") w x 1780mm (70") d x 2296mm (90") h |
| SWITCHING DEVICE | Vacuum circuit breaker | |
| DEVICE MOUNTING | Fixed |
| WEIGHTS | 771 kg (1700 lbs) | |
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