FD63T070 – SIEMENS FD FRAME 70A TRIP

The Siemens FD Frame series is rated for a higher interrupting capacity than residential breakers, making it suitable for commercial and light-industrial distribution systems where available fault current can be significant. The specific interrupting rating (typically 18 kA–65 kA depending on voltage configuration) should be verified against your system's available short-circuit current to ensure code compliance. Contact us and we can help confirm the exact rating for your application.

Siemens FD Frame breakers have seen limited production runs and some configurations are considered hard-to-find. Northern Breaker Group specializes in obsolete and discontinued breakers — if the SIEFD63T070 is no longer available through standard distribution channels, we can source tested surplus or new-old-stock units. Reach out to our Calgary, Edmonton, or Vancouver counter for availability.

Yes — a 3-pole, 70 A FD Frame MCCB is commonly applied to motor branch circuits and feeder protection in commercial settings. However, you must verify that the breaker's trip characteristics and interrupting rating are appropriate for the motor's full-load current, locked-rotor current, and the system's available fault current, in accordance with the Canadian Electrical Code (CEC). We recommend consulting your engineer of record or contacting us for application guidance.