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The BQD6340 is a robust Siemens 3-Pole 40 Amp breaker designed for 600V applications, featuring a convenient bolt-on installation. With a short-circuit interrupting capacity of 14kA, it ensures reliable protection for your electrical systems. Ideal for both residential and commercial setups, this breaker is a dependable choice for your power needs.
The BQD6340 is a bolt-on, 600V molded-case breaker designed for Siemens/ITE commercial panelboards and switchboards rated for 600V — not residential loadcentres. Exact compatibility depends on your specific panelboard model and buswork configuration. Send us your panel model number and we'll confirm whether the BQD6340 is the right fit.
Availability of specific BQD-series breakers can vary. Northern Breaker Group specialises in obsolete and hard-to-find breakers across Canada — if the BQD6340 is discontinued or difficult to source through standard channels, we can often locate new-old-stock or verified surplus units. Contact our Calgary, Edmonton, or Vancouver counter for a quote.
The 14kA short-circuit interrupting capacity means the BQD6340 can safely clear fault currents up to 14,000 amperes at 600V. Whether this is sufficient depends on the available fault current at the point of installation in your system. A licensed electrician or engineer should perform a short-circuit study to confirm the breaker's interrupting rating meets or exceeds the available fault current at your panel — as required by the Canadian Electrical Code (CEC).
