BQD6240 – SIEMENS 2P40A 347V BOLT ON 14kA BREAKER
The BQD6240 is a high-quality Siemens 2-pole 40 Amp circuit breaker designed for 347V applications. With a robust interrupting capacity of 14kA, it ensures reliable protection and performance for your electrical systems. This bolt-on breaker is ideal for commercial uses, providing peace of mind and safety you can trust.
| Brand | Siemens |
|---|---|
| Type | Standard (Thermal-Magnetic) |
| Amperage | 40 A |
| Poles | 2-Pole |
| Voltage | 347V |
| Interrupting Rating | 14 kA |
| Mounting | Bolt-On |
| Frame / Series | BQD |
| Catalogue # | BQD6240 |
The Siemens BQD6240 is a bolt-on breaker from the BQD series, rated for 347V — making it suited for commercial and light-industrial panelboards that accept bolt-on style breakers at this voltage rating. It is not a plug-in residential breaker and is not intended for standard residential loadcentres. The BQD series is designed for use in compatible Siemens commercial panelboards that support 347V, 2-pole bolt-on configurations.
Not sure if it fits your board? Send us your panelboard model number and we'll confirm compatibility.
The BQD6240 is rated for 347V — a voltage common in Canadian commercial three-phase wye systems — whereas standard residential Siemens breakers (such as the QP series) are rated for 120/240V. The BQD series also features a bolt-on mounting style for added stability in commercial panelboards, rather than the plug-in connection used in residential loadcentres.
Yes. The 347V rating aligns directly with the phase-to-neutral voltage of a 600V three-phase wye system, which is the standard distribution voltage in Canadian commercial buildings. The 14kA interrupting rating makes it appropriate for many commercial branch-circuit applications — though you should always verify the available fault current at the panel does not exceed 14kA.
Availability of specific BQD series breakers can vary. Northern Breaker Group specializes in obsolete and hard-to-find breakers across Canada, with counter locations in Calgary, Edmonton, and Vancouver. If the BQD6240 is no longer readily available through standard channels, contact us for a quote — we'll do our best to source it for you.
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