SWR retrofit
The SWR12 is an OEM designed retrofit circuit breaker for both the South Wales Switchgear C & D range Oil Circuit Breaker and the HG12 Gas Circuit Breaker, to IEC 62271-100. BRUSH Switchgear is proud of its heritage in the C and D range of switchgear, which continue to work at the highest standards. Technological advances have allowed us to improve further and offer our customers a circuit breaker that boasts the award-winning magnetic actuator along with removing the need for SF6 gas. The SWR12 circuit breaker, offers a new lease of life for existing switchgear, with this effective retrofit solution. Employing magnetic actuator technology with vacuum interrupters, the SWR12 is designed for 10,000 operations and a life expectancy of 30 years. It is designed for retrofitting into existing switchboards without the need for panel modification.
Superior, proven technology with minimal maintenance
Removes the need for high capacity auxiliary supply
No civil works required and existing HV cabling remains undisturbed
Improvement of Health & Safety by removal of Oil or SF6 gas
Considerable life extension of the existing switchgear
Lower owner costs through virtually no maintenance requirements and increased switchboard life expectancy
Uses existing design of primary and automatic secondary contacts
Improved panel interlocking to latest ENA requirements
In addition to the retrofit of the circuit breaker, BRUSH Switchgear can offer a more complete system solution to enhance the control and automation of the distribution network
| Rated Values | kV | 12 |
| Normal Rated Currents | A | 400/630, 800, 1250 |
| Rated Voltage | kV | 12 |
| Lightning Impulse Withstand Voltage | kVP | 75 |
| Short Duration Power Frequency Withstand Voltage | kV | 28 |
| Rated Frequency | Hz | 50 |
| Rated Short-Time Withstand Current | kA | 25 |
| Rated Peak Withstand Current | kA Peak | 62.5 |
| Rated Duration of Short Circuit | Seconds | 3 |
| Making Current (peak) | kA | 62.5 |
| Symmetrical Breaking Current | kA | 25 |
| Rated Short-Time Current | kA | 25 (3 sec) |
| Rated Auxiliary Voltages | V dc | 30, 48/50, 110/125 |
| Minimum opening time/closing time | ms | 33/76 |
| Normal Operations | 10,000 | |
| Weight | Kg | 211 |
| Rated Operating Sequence | O-0.3s-CO-15s-Co | |
| Operating Mechanism Type Dependent power closing | (Magnetic actuator) |
Stored energy opening (Springs, charging for closing) |
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