Modular breaker design limits stockholding
Third Quarter 2007
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The 'pod' residual current breaker option (RCBO) from Eaton provides overcurrent protection and residual current tripping characteristics that are matched to the needs of the application. The device employs a standard Eaton SP or SP&N miniature circuit-breaker (MCB) with a field-fittable residual current device (RCD) 'pod' which clips onto the line end of the breaker.
The RCBO is available in current ratings up to 63 A and may be fitted with a choice of field-fittable 10 mA, 30 mA, or 100 mA instantaneous trip units or 100 mA or 300 mA time delayed units.
This modular approach allows wholesalers or contractors to stock a modest range of single-phase and three-phase standard RCBOs plus a small range of pods that permit any available RCBO specification to be satisfied on site. Existing Eaton MCB installations can be upgraded to full RCBO protection or existing RCBOs can be modified when protection needs change. The requirement for 15 kVA short-circuit-ratings is easily satisfied and there is a 110 V option for use with 55-0-55 V centre-tapped power supplies.
For more information contact Rob Hare, sales and marketing director, CHI Control Components, +27 (0)11 824 7400, [email protected], www.chicontrol.co.za
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